ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1) // SPDX-License-Identifier: GPL-2.0+
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 2) /*
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 3) * test_xarray.c: Test the XArray API
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 4) * Copyright (c) 2017-2018 Microsoft Corporation
c44aa5e8ab58b (Matthew Wilcox (Oracle) 2020-01-17 22:13:21 -0500 5) * Copyright (c) 2019-2020 Oracle
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 6) * Author: Matthew Wilcox <willy@infradead.org>
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 7) */
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 8)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 9) #include <linux/xarray.h>
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 10) #include <linux/module.h>
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 11)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 12) static unsigned int tests_run;
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 13) static unsigned int tests_passed;
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 14)
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 15) static const unsigned int order_limit =
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 16) IS_ENABLED(CONFIG_XARRAY_MULTI) ? BITS_PER_LONG : 1;
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 17)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 18) #ifndef XA_DEBUG
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 19) # ifdef __KERNEL__
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 20) void xa_dump(const struct xarray *xa) { }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 21) # endif
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 22) #undef XA_BUG_ON
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 23) #define XA_BUG_ON(xa, x) do { \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 24) tests_run++; \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 25) if (x) { \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 26) printk("BUG at %s:%d\n", __func__, __LINE__); \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 27) xa_dump(xa); \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 28) dump_stack(); \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 29) } else { \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 30) tests_passed++; \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 31) } \
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 32) } while (0)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 33) #endif
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 34)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 35) static void *xa_mk_index(unsigned long index)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 36) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 37) return xa_mk_value(index & LONG_MAX);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 38) }
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 39)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 40) static void *xa_store_index(struct xarray *xa, unsigned long index, gfp_t gfp)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 41) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 42) return xa_store(xa, index, xa_mk_index(index), gfp);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 43) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 44)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 45) static void xa_insert_index(struct xarray *xa, unsigned long index)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 46) {
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 47) XA_BUG_ON(xa, xa_insert(xa, index, xa_mk_index(index),
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 48) GFP_KERNEL) != 0);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 49) }
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 50)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 51) static void xa_alloc_index(struct xarray *xa, unsigned long index, gfp_t gfp)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 52) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 53) u32 id;
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 54)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 55) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(index), xa_limit_32b,
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 56) gfp) != 0);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 57) XA_BUG_ON(xa, id != index);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 58) }
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 59)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 60) static void xa_erase_index(struct xarray *xa, unsigned long index)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 61) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 62) XA_BUG_ON(xa, xa_erase(xa, index) != xa_mk_index(index));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 63) XA_BUG_ON(xa, xa_load(xa, index) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 64) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 65)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 66) /*
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 67) * If anyone needs this, please move it to xarray.c. We have no current
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 68) * users outside the test suite because all current multislot users want
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 69) * to use the advanced API.
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 70) */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 71) static void *xa_store_order(struct xarray *xa, unsigned long index,
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 72) unsigned order, void *entry, gfp_t gfp)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 73) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 74) XA_STATE_ORDER(xas, xa, index, order);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 75) void *curr;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 76)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 77) do {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 78) xas_lock(&xas);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 79) curr = xas_store(&xas, entry);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 80) xas_unlock(&xas);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 81) } while (xas_nomem(&xas, gfp));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 82)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 83) return curr;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 84) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 85)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 86) static noinline void check_xa_err(struct xarray *xa)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 87) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 88) XA_BUG_ON(xa, xa_err(xa_store_index(xa, 0, GFP_NOWAIT)) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 89) XA_BUG_ON(xa, xa_err(xa_erase(xa, 0)) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 90) #ifndef __KERNEL__
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 91) /* The kernel does not fail GFP_NOWAIT allocations */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 92) XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 93) XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_NOWAIT)) != -ENOMEM);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 94) #endif
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 95) XA_BUG_ON(xa, xa_err(xa_store_index(xa, 1, GFP_KERNEL)) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 96) XA_BUG_ON(xa, xa_err(xa_store(xa, 1, xa_mk_value(0), GFP_KERNEL)) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 97) XA_BUG_ON(xa, xa_err(xa_erase(xa, 1)) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 98) // kills the test-suite :-(
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 99) // XA_BUG_ON(xa, xa_err(xa_store(xa, 0, xa_mk_internal(0), 0)) != -EINVAL);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 100) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 101)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 102) static noinline void check_xas_retry(struct xarray *xa)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 103) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 104) XA_STATE(xas, xa, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 105) void *entry;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 106)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 107) xa_store_index(xa, 0, GFP_KERNEL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 108) xa_store_index(xa, 1, GFP_KERNEL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 109)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 110) rcu_read_lock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 111) XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_value(0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 112) xa_erase_index(xa, 1);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 113) XA_BUG_ON(xa, !xa_is_retry(xas_reload(&xas)));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 114) XA_BUG_ON(xa, xas_retry(&xas, NULL));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 115) XA_BUG_ON(xa, xas_retry(&xas, xa_mk_value(0)));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 116) xas_reset(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 117) XA_BUG_ON(xa, xas.xa_node != XAS_RESTART);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 118) XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 119) XA_BUG_ON(xa, xas.xa_node != NULL);
bd54211b8e199 (Matthew Wilcox 2019-02-04 23:12:08 -0500 120) rcu_read_unlock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 121)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 122) XA_BUG_ON(xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
bd54211b8e199 (Matthew Wilcox 2019-02-04 23:12:08 -0500 123)
bd54211b8e199 (Matthew Wilcox 2019-02-04 23:12:08 -0500 124) rcu_read_lock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 125) XA_BUG_ON(xa, !xa_is_internal(xas_reload(&xas)));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 126) xas.xa_node = XAS_RESTART;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 127) XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 128) rcu_read_unlock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 129)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 130) /* Make sure we can iterate through retry entries */
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 131) xas_lock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 132) xas_set(&xas, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 133) xas_store(&xas, XA_RETRY_ENTRY);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 134) xas_set(&xas, 1);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 135) xas_store(&xas, XA_RETRY_ENTRY);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 136)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 137) xas_set(&xas, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 138) xas_for_each(&xas, entry, ULONG_MAX) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 139) xas_store(&xas, xa_mk_index(xas.xa_index));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 140) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 141) xas_unlock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 142)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 143) xa_erase_index(xa, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 144) xa_erase_index(xa, 1);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 145) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 146)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 147) static noinline void check_xa_load(struct xarray *xa)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 148) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 149) unsigned long i, j;
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 150)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 151) for (i = 0; i < 1024; i++) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 152) for (j = 0; j < 1024; j++) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 153) void *entry = xa_load(xa, j);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 154) if (j < i)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 155) XA_BUG_ON(xa, xa_to_value(entry) != j);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 156) else
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 157) XA_BUG_ON(xa, entry);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 158) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 159) XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 160) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 161)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 162) for (i = 0; i < 1024; i++) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 163) for (j = 0; j < 1024; j++) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 164) void *entry = xa_load(xa, j);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 165) if (j >= i)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 166) XA_BUG_ON(xa, xa_to_value(entry) != j);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 167) else
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 168) XA_BUG_ON(xa, entry);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 169) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 170) xa_erase_index(xa, i);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 171) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 172) XA_BUG_ON(xa, !xa_empty(xa));
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 173) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 174)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 175) static noinline void check_xa_mark_1(struct xarray *xa, unsigned long index)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 176) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 177) unsigned int order;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 178) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 8 : 1;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 179)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 180) /* NULL elements have no marks set */
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 181) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 182) xa_set_mark(xa, index, XA_MARK_0);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 183) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 184)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 185) /* Storing a pointer will not make a mark appear */
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 186) XA_BUG_ON(xa, xa_store_index(xa, index, GFP_KERNEL) != NULL);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 187) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 188) xa_set_mark(xa, index, XA_MARK_0);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 189) XA_BUG_ON(xa, !xa_get_mark(xa, index, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 190)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 191) /* Setting one mark will not set another mark */
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 192) XA_BUG_ON(xa, xa_get_mark(xa, index + 1, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 193) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_1));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 194)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 195) /* Storing NULL clears marks, and they can't be set again */
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 196) xa_erase_index(xa, index);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 197) XA_BUG_ON(xa, !xa_empty(xa));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 198) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 199) xa_set_mark(xa, index, XA_MARK_0);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 200) XA_BUG_ON(xa, xa_get_mark(xa, index, XA_MARK_0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 201)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 202) /*
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 203) * Storing a multi-index entry over entries with marks gives the
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 204) * entire entry the union of the marks
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 205) */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 206) BUG_ON((index % 4) != 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 207) for (order = 2; order < max_order; order++) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 208) unsigned long base = round_down(index, 1UL << order);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 209) unsigned long next = base + (1UL << order);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 210) unsigned long i;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 211)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 212) XA_BUG_ON(xa, xa_store_index(xa, index + 1, GFP_KERNEL));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 213) xa_set_mark(xa, index + 1, XA_MARK_0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 214) XA_BUG_ON(xa, xa_store_index(xa, index + 2, GFP_KERNEL));
d69d287a9002b (Matthew Wilcox 2019-01-14 13:57:31 -0500 215) xa_set_mark(xa, index + 2, XA_MARK_2);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 216) XA_BUG_ON(xa, xa_store_index(xa, next, GFP_KERNEL));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 217) xa_store_order(xa, index, order, xa_mk_index(index),
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 218) GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 219) for (i = base; i < next; i++) {
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 220) XA_STATE(xas, xa, i);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 221) unsigned int seen = 0;
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 222) void *entry;
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 223)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 224) XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_0));
d69d287a9002b (Matthew Wilcox 2019-01-14 13:57:31 -0500 225) XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_1));
d69d287a9002b (Matthew Wilcox 2019-01-14 13:57:31 -0500 226) XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_2));
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 227)
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 228) /* We should see two elements in the array */
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 229) rcu_read_lock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 230) xas_for_each(&xas, entry, ULONG_MAX)
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 231) seen++;
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 232) rcu_read_unlock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 233) XA_BUG_ON(xa, seen != 2);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 234)
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 235) /* One of which is marked */
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 236) xas_set(&xas, 0);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 237) seen = 0;
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 238) rcu_read_lock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 239) xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 240) seen++;
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 241) rcu_read_unlock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 242) XA_BUG_ON(xa, seen != 1);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 243) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 244) XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 245) XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 246) XA_BUG_ON(xa, xa_get_mark(xa, next, XA_MARK_2));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 247) xa_erase_index(xa, index);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 248) xa_erase_index(xa, next);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 249) XA_BUG_ON(xa, !xa_empty(xa));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 250) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 251) XA_BUG_ON(xa, !xa_empty(xa));
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 252) }
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 253)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 254) static noinline void check_xa_mark_2(struct xarray *xa)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 255) {
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 256) XA_STATE(xas, xa, 0);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 257) unsigned long index;
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 258) unsigned int count = 0;
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 259) void *entry;
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 260)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 261) xa_store_index(xa, 0, GFP_KERNEL);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 262) xa_set_mark(xa, 0, XA_MARK_0);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 263) xas_lock(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 264) xas_load(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 265) xas_init_marks(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 266) xas_unlock(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 267) XA_BUG_ON(xa, !xa_get_mark(xa, 0, XA_MARK_0) == 0);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 268)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 269) for (index = 3500; index < 4500; index++) {
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 270) xa_store_index(xa, index, GFP_KERNEL);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 271) xa_set_mark(xa, index, XA_MARK_0);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 272) }
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 273)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 274) xas_reset(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 275) rcu_read_lock();
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 276) xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 277) count++;
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 278) rcu_read_unlock();
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 279) XA_BUG_ON(xa, count != 1000);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 280)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 281) xas_lock(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 282) xas_for_each(&xas, entry, ULONG_MAX) {
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 283) xas_init_marks(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 284) XA_BUG_ON(xa, !xa_get_mark(xa, xas.xa_index, XA_MARK_0));
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 285) XA_BUG_ON(xa, !xas_get_mark(&xas, XA_MARK_0));
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 286) }
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 287) xas_unlock(&xas);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 288)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 289) xa_destroy(xa);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 290) }
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 291)
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 292) static noinline void check_xa_mark_3(struct xarray *xa)
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 293) {
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 294) #ifdef CONFIG_XARRAY_MULTI
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 295) XA_STATE(xas, xa, 0x41);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 296) void *entry;
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 297) int count = 0;
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 298)
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 299) xa_store_order(xa, 0x40, 2, xa_mk_index(0x40), GFP_KERNEL);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 300) xa_set_mark(xa, 0x41, XA_MARK_0);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 301)
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 302) rcu_read_lock();
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 303) xas_for_each_marked(&xas, entry, ULONG_MAX, XA_MARK_0) {
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 304) count++;
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 305) XA_BUG_ON(xa, entry != xa_mk_index(0x40));
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 306) }
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 307) XA_BUG_ON(xa, count != 1);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 308) rcu_read_unlock();
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 309) xa_destroy(xa);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 310) #endif
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 311) }
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 312)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 313) static noinline void check_xa_mark(struct xarray *xa)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 314) {
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 315) unsigned long index;
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 316)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 317) for (index = 0; index < 16384; index += 4)
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 318) check_xa_mark_1(xa, index);
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 319)
adb9d9c4ccb1f (Matthew Wilcox 2018-04-09 16:52:21 -0400 320) check_xa_mark_2(xa);
04e9e9bb8470b (Matthew Wilcox (Oracle) 2020-06-14 21:52:04 -0400 321) check_xa_mark_3(xa);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 322) }
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 323)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 324) static noinline void check_xa_shrink(struct xarray *xa)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 325) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 326) XA_STATE(xas, xa, 1);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 327) struct xa_node *node;
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 328) unsigned int order;
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 329) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 15 : 1;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 330)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 331) XA_BUG_ON(xa, !xa_empty(xa));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 332) XA_BUG_ON(xa, xa_store_index(xa, 0, GFP_KERNEL) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 333) XA_BUG_ON(xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 334)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 335) /*
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 336) * Check that erasing the entry at 1 shrinks the tree and properly
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 337) * marks the node as being deleted.
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 338) */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 339) xas_lock(&xas);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 340) XA_BUG_ON(xa, xas_load(&xas) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 341) node = xas.xa_node;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 342) XA_BUG_ON(xa, xa_entry_locked(xa, node, 0) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 343) XA_BUG_ON(xa, xas_store(&xas, NULL) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 344) XA_BUG_ON(xa, xa_load(xa, 1) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 345) XA_BUG_ON(xa, xas.xa_node != XAS_BOUNDS);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 346) XA_BUG_ON(xa, xa_entry_locked(xa, node, 0) != XA_RETRY_ENTRY);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 347) XA_BUG_ON(xa, xas_load(&xas) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 348) xas_unlock(&xas);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 349) XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 350) xa_erase_index(xa, 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 351) XA_BUG_ON(xa, !xa_empty(xa));
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 352)
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 353) for (order = 0; order < max_order; order++) {
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 354) unsigned long max = (1UL << order) - 1;
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 355) xa_store_order(xa, 0, order, xa_mk_value(0), GFP_KERNEL);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 356) XA_BUG_ON(xa, xa_load(xa, max) != xa_mk_value(0));
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 357) XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 358) rcu_read_lock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 359) node = xa_head(xa);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 360) rcu_read_unlock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 361) XA_BUG_ON(xa, xa_store_index(xa, ULONG_MAX, GFP_KERNEL) !=
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 362) NULL);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 363) rcu_read_lock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 364) XA_BUG_ON(xa, xa_head(xa) == node);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 365) rcu_read_unlock();
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 366) XA_BUG_ON(xa, xa_load(xa, max + 1) != NULL);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 367) xa_erase_index(xa, ULONG_MAX);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 368) XA_BUG_ON(xa, xa->xa_head != node);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 369) xa_erase_index(xa, 0);
93eb07f72c8d8 (Matthew Wilcox 2018-09-08 12:09:52 -0400 370) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 371) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 372)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 373) static noinline void check_insert(struct xarray *xa)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 374) {
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 375) unsigned long i;
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 376)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 377) for (i = 0; i < 1024; i++) {
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 378) xa_insert_index(xa, i);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 379) XA_BUG_ON(xa, xa_load(xa, i - 1) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 380) XA_BUG_ON(xa, xa_load(xa, i + 1) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 381) xa_erase_index(xa, i);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 382) }
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 383)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 384) for (i = 10; i < BITS_PER_LONG; i++) {
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 385) xa_insert_index(xa, 1UL << i);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 386) XA_BUG_ON(xa, xa_load(xa, (1UL << i) - 1) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 387) XA_BUG_ON(xa, xa_load(xa, (1UL << i) + 1) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 388) xa_erase_index(xa, 1UL << i);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 389)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 390) xa_insert_index(xa, (1UL << i) - 1);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 391) XA_BUG_ON(xa, xa_load(xa, (1UL << i) - 2) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 392) XA_BUG_ON(xa, xa_load(xa, 1UL << i) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 393) xa_erase_index(xa, (1UL << i) - 1);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 394) }
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 395)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 396) xa_insert_index(xa, ~0UL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 397) XA_BUG_ON(xa, xa_load(xa, 0UL) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 398) XA_BUG_ON(xa, xa_load(xa, ~1UL) != NULL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 399) xa_erase_index(xa, ~0UL);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 400)
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 401) XA_BUG_ON(xa, !xa_empty(xa));
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 402) }
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 403)
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 404) static noinline void check_cmpxchg(struct xarray *xa)
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 405) {
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 406) void *FIVE = xa_mk_value(5);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 407) void *SIX = xa_mk_value(6);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 408) void *LOTS = xa_mk_value(12345678);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 409)
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 410) XA_BUG_ON(xa, !xa_empty(xa));
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 411) XA_BUG_ON(xa, xa_store_index(xa, 12345678, GFP_KERNEL) != NULL);
fd9dc93e36231 (Matthew Wilcox 2019-02-06 13:07:11 -0500 412) XA_BUG_ON(xa, xa_insert(xa, 12345678, xa, GFP_KERNEL) != -EBUSY);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 413) XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, SIX, FIVE, GFP_KERNEL) != LOTS);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 414) XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, LOTS, FIVE, GFP_KERNEL) != LOTS);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 415) XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, FIVE, LOTS, GFP_KERNEL) != FIVE);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 416) XA_BUG_ON(xa, xa_cmpxchg(xa, 5, FIVE, NULL, GFP_KERNEL) != NULL);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 417) XA_BUG_ON(xa, xa_cmpxchg(xa, 5, NULL, FIVE, GFP_KERNEL) != NULL);
062b735912b9f (Matthew Wilcox (Oracle) 2020-03-31 14:23:59 -0400 418) XA_BUG_ON(xa, xa_insert(xa, 5, FIVE, GFP_KERNEL) != -EBUSY);
062b735912b9f (Matthew Wilcox (Oracle) 2020-03-31 14:23:59 -0400 419) XA_BUG_ON(xa, xa_cmpxchg(xa, 5, FIVE, NULL, GFP_KERNEL) != FIVE);
062b735912b9f (Matthew Wilcox (Oracle) 2020-03-31 14:23:59 -0400 420) XA_BUG_ON(xa, xa_insert(xa, 5, FIVE, GFP_KERNEL) == -EBUSY);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 421) xa_erase_index(xa, 12345678);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 422) xa_erase_index(xa, 5);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 423) XA_BUG_ON(xa, !xa_empty(xa));
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 424) }
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 425)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 426) static noinline void check_reserve(struct xarray *xa)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 427) {
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 428) void *entry;
4a31896c5b5a2 (Matthew Wilcox 2018-12-17 14:45:36 -0500 429) unsigned long index;
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 430) int count;
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 431)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 432) /* An array with a reserved entry is not empty */
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 433) XA_BUG_ON(xa, !xa_empty(xa));
f818b82b80164 (Matthew Wilcox 2019-02-08 14:02:45 -0500 434) XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 435) XA_BUG_ON(xa, xa_empty(xa));
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 436) XA_BUG_ON(xa, xa_load(xa, 12345678));
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 437) xa_release(xa, 12345678);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 438) XA_BUG_ON(xa, !xa_empty(xa));
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 439)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 440) /* Releasing a used entry does nothing */
f818b82b80164 (Matthew Wilcox 2019-02-08 14:02:45 -0500 441) XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 442) XA_BUG_ON(xa, xa_store_index(xa, 12345678, GFP_NOWAIT) != NULL);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 443) xa_release(xa, 12345678);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 444) xa_erase_index(xa, 12345678);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 445) XA_BUG_ON(xa, !xa_empty(xa));
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 446)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 447) /* cmpxchg sees a reserved entry as ZERO */
f818b82b80164 (Matthew Wilcox 2019-02-08 14:02:45 -0500 448) XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 449) XA_BUG_ON(xa, xa_cmpxchg(xa, 12345678, XA_ZERO_ENTRY,
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 450) xa_mk_value(12345678), GFP_NOWAIT) != NULL);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 451) xa_release(xa, 12345678);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 452) xa_erase_index(xa, 12345678);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 453) XA_BUG_ON(xa, !xa_empty(xa));
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 454)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 455) /* xa_insert treats it as busy */
f818b82b80164 (Matthew Wilcox 2019-02-08 14:02:45 -0500 456) XA_BUG_ON(xa, xa_reserve(xa, 12345678, GFP_KERNEL) != 0);
b0606fed6eece (Matthew Wilcox 2019-01-02 13:57:03 -0500 457) XA_BUG_ON(xa, xa_insert(xa, 12345678, xa_mk_value(12345678), 0) !=
fd9dc93e36231 (Matthew Wilcox 2019-02-06 13:07:11 -0500 458) -EBUSY);
b0606fed6eece (Matthew Wilcox 2019-01-02 13:57:03 -0500 459) XA_BUG_ON(xa, xa_empty(xa));
b0606fed6eece (Matthew Wilcox 2019-01-02 13:57:03 -0500 460) XA_BUG_ON(xa, xa_erase(xa, 12345678) != NULL);
4c0608f4a0e76 (Matthew Wilcox 2018-10-30 09:45:55 -0400 461) XA_BUG_ON(xa, !xa_empty(xa));
4c0608f4a0e76 (Matthew Wilcox 2018-10-30 09:45:55 -0400 462)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 463) /* Can iterate through a reserved entry */
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 464) xa_store_index(xa, 5, GFP_KERNEL);
f818b82b80164 (Matthew Wilcox 2019-02-08 14:02:45 -0500 465) XA_BUG_ON(xa, xa_reserve(xa, 6, GFP_KERNEL) != 0);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 466) xa_store_index(xa, 7, GFP_KERNEL);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 467)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 468) count = 0;
4a31896c5b5a2 (Matthew Wilcox 2018-12-17 14:45:36 -0500 469) xa_for_each(xa, index, entry) {
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 470) XA_BUG_ON(xa, index != 5 && index != 7);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 471) count++;
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 472) }
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 473) XA_BUG_ON(xa, count != 2);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 474)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 475) /* If we free a reserved entry, we should be able to allocate it */
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 476) if (xa->xa_flags & XA_FLAGS_ALLOC) {
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 477) u32 id;
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 478)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 479) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_value(8),
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 480) XA_LIMIT(5, 10), GFP_KERNEL) != 0);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 481) XA_BUG_ON(xa, id != 8);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 482)
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 483) xa_release(xa, 6);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 484) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_value(6),
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 485) XA_LIMIT(5, 10), GFP_KERNEL) != 0);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 486) XA_BUG_ON(xa, id != 6);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 487) }
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 488)
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 489) xa_destroy(xa);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 490) }
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 491)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 492) static noinline void check_xas_erase(struct xarray *xa)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 493) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 494) XA_STATE(xas, xa, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 495) void *entry;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 496) unsigned long i, j;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 497)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 498) for (i = 0; i < 200; i++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 499) for (j = i; j < 2 * i + 17; j++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 500) xas_set(&xas, j);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 501) do {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 502) xas_lock(&xas);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 503) xas_store(&xas, xa_mk_index(j));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 504) xas_unlock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 505) } while (xas_nomem(&xas, GFP_KERNEL));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 506) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 507)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 508) xas_set(&xas, ULONG_MAX);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 509) do {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 510) xas_lock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 511) xas_store(&xas, xa_mk_value(0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 512) xas_unlock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 513) } while (xas_nomem(&xas, GFP_KERNEL));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 514)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 515) xas_lock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 516) xas_store(&xas, NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 517)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 518) xas_set(&xas, 0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 519) j = i;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 520) xas_for_each(&xas, entry, ULONG_MAX) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 521) XA_BUG_ON(xa, entry != xa_mk_index(j));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 522) xas_store(&xas, NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 523) j++;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 524) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 525) xas_unlock(&xas);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 526) XA_BUG_ON(xa, !xa_empty(xa));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 527) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 528) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 529)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 530) #ifdef CONFIG_XARRAY_MULTI
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 531) static noinline void check_multi_store_1(struct xarray *xa, unsigned long index,
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 532) unsigned int order)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 533) {
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 534) XA_STATE(xas, xa, index);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 535) unsigned long min = index & ~((1UL << order) - 1);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 536) unsigned long max = min + (1UL << order);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 537)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 538) xa_store_order(xa, index, order, xa_mk_index(index), GFP_KERNEL);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 539) XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_index(index));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 540) XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_index(index));
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 541) XA_BUG_ON(xa, xa_load(xa, max) != NULL);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 542) XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 543)
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 544) xas_lock(&xas);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 545) XA_BUG_ON(xa, xas_store(&xas, xa_mk_index(min)) != xa_mk_index(index));
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 546) xas_unlock(&xas);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 547) XA_BUG_ON(xa, xa_load(xa, min) != xa_mk_index(min));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 548) XA_BUG_ON(xa, xa_load(xa, max - 1) != xa_mk_index(min));
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 549) XA_BUG_ON(xa, xa_load(xa, max) != NULL);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 550) XA_BUG_ON(xa, xa_load(xa, min - 1) != NULL);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 551)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 552) xa_erase_index(xa, min);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 553) XA_BUG_ON(xa, !xa_empty(xa));
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 554) }
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 555)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 556) static noinline void check_multi_store_2(struct xarray *xa, unsigned long index,
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 557) unsigned int order)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 558) {
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 559) XA_STATE(xas, xa, index);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 560) xa_store_order(xa, index, order, xa_mk_value(0), GFP_KERNEL);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 561)
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 562) xas_lock(&xas);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 563) XA_BUG_ON(xa, xas_store(&xas, xa_mk_value(1)) != xa_mk_value(0));
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 564) XA_BUG_ON(xa, xas.xa_index != index);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 565) XA_BUG_ON(xa, xas_store(&xas, NULL) != xa_mk_value(1));
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 566) xas_unlock(&xas);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 567) XA_BUG_ON(xa, !xa_empty(xa));
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 568) }
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 569)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 570) static noinline void check_multi_store_3(struct xarray *xa, unsigned long index,
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 571) unsigned int order)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 572) {
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 573) XA_STATE(xas, xa, 0);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 574) void *entry;
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 575) int n = 0;
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 576)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 577) xa_store_order(xa, index, order, xa_mk_index(index), GFP_KERNEL);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 578)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 579) xas_lock(&xas);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 580) xas_for_each(&xas, entry, ULONG_MAX) {
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 581) XA_BUG_ON(xa, entry != xa_mk_index(index));
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 582) n++;
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 583) }
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 584) XA_BUG_ON(xa, n != 1);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 585) xas_set(&xas, index + 1);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 586) xas_for_each(&xas, entry, ULONG_MAX) {
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 587) XA_BUG_ON(xa, entry != xa_mk_index(index));
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 588) n++;
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 589) }
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 590) XA_BUG_ON(xa, n != 2);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 591) xas_unlock(&xas);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 592)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 593) xa_destroy(xa);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 594) }
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 595) #endif
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 596)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 597) static noinline void check_multi_store(struct xarray *xa)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 598) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 599) #ifdef CONFIG_XARRAY_MULTI
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 600) unsigned long i, j, k;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 601) unsigned int max_order = (sizeof(long) == 4) ? 30 : 60;
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 602)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 603) /* Loading from any position returns the same value */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 604) xa_store_order(xa, 0, 1, xa_mk_value(0), GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 605) XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 606) XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 607) XA_BUG_ON(xa, xa_load(xa, 2) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 608) rcu_read_lock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 609) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 2);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 610) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 2);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 611) rcu_read_unlock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 612)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 613) /* Storing adjacent to the value does not alter the value */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 614) xa_store(xa, 3, xa, GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 615) XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 616) XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(0));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 617) XA_BUG_ON(xa, xa_load(xa, 2) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 618) rcu_read_lock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 619) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 3);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 620) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 2);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 621) rcu_read_unlock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 622)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 623) /* Overwriting multiple indexes works */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 624) xa_store_order(xa, 0, 2, xa_mk_value(1), GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 625) XA_BUG_ON(xa, xa_load(xa, 0) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 626) XA_BUG_ON(xa, xa_load(xa, 1) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 627) XA_BUG_ON(xa, xa_load(xa, 2) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 628) XA_BUG_ON(xa, xa_load(xa, 3) != xa_mk_value(1));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 629) XA_BUG_ON(xa, xa_load(xa, 4) != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 630) rcu_read_lock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 631) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->count != 4);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 632) XA_BUG_ON(xa, xa_to_node(xa_head(xa))->nr_values != 4);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 633) rcu_read_unlock();
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 634)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 635) /* We can erase multiple values with a single store */
5404a7f1c21cf (Matthew Wilcox 2018-11-05 09:34:04 -0500 636) xa_store_order(xa, 0, BITS_PER_LONG - 1, NULL, GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 637) XA_BUG_ON(xa, !xa_empty(xa));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 638)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 639) /* Even when the first slot is empty but the others aren't */
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 640) xa_store_index(xa, 1, GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 641) xa_store_index(xa, 2, GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 642) xa_store_order(xa, 0, 2, NULL, GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 643) XA_BUG_ON(xa, !xa_empty(xa));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 644)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 645) for (i = 0; i < max_order; i++) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 646) for (j = 0; j < max_order; j++) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 647) xa_store_order(xa, 0, i, xa_mk_index(i), GFP_KERNEL);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 648) xa_store_order(xa, 0, j, xa_mk_index(j), GFP_KERNEL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 649)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 650) for (k = 0; k < max_order; k++) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 651) void *entry = xa_load(xa, (1UL << k) - 1);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 652) if ((i < k) && (j < k))
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 653) XA_BUG_ON(xa, entry != NULL);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 654) else
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 655) XA_BUG_ON(xa, entry != xa_mk_index(j));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 656) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 657)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 658) xa_erase(xa, 0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 659) XA_BUG_ON(xa, !xa_empty(xa));
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 660) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 661) }
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 662)
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 663) for (i = 0; i < 20; i++) {
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 664) check_multi_store_1(xa, 200, i);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 665) check_multi_store_1(xa, 0, i);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 666) check_multi_store_1(xa, (1UL << i) + 1, i);
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 667) }
4f06d6302da68 (Matthew Wilcox 2018-09-09 01:52:17 -0400 668) check_multi_store_2(xa, 4095, 9);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 669)
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 670) for (i = 1; i < 20; i++) {
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 671) check_multi_store_3(xa, 0, i);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 672) check_multi_store_3(xa, 1UL << i, i);
4f145cd66a1a7 (Matthew Wilcox 2018-11-29 16:04:35 -0500 673) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 674) #endif
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 675) }
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 676)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 677) static noinline void check_xa_alloc_1(struct xarray *xa, unsigned int base)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 678) {
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 679) int i;
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 680) u32 id;
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 681)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 682) XA_BUG_ON(xa, !xa_empty(xa));
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 683) /* An empty array should assign %base to the first alloc */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 684) xa_alloc_index(xa, base, GFP_KERNEL);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 685)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 686) /* Erasing it should make the array empty again */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 687) xa_erase_index(xa, base);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 688) XA_BUG_ON(xa, !xa_empty(xa));
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 689)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 690) /* And it should assign %base again */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 691) xa_alloc_index(xa, base, GFP_KERNEL);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 692)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 693) /* Allocating and then erasing a lot should not lose base */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 694) for (i = base + 1; i < 2 * XA_CHUNK_SIZE; i++)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 695) xa_alloc_index(xa, i, GFP_KERNEL);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 696) for (i = base; i < 2 * XA_CHUNK_SIZE; i++)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 697) xa_erase_index(xa, i);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 698) xa_alloc_index(xa, base, GFP_KERNEL);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 699)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 700) /* Destroying the array should do the same as erasing */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 701) xa_destroy(xa);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 702)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 703) /* And it should assign %base again */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 704) xa_alloc_index(xa, base, GFP_KERNEL);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 705)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 706) /* The next assigned ID should be base+1 */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 707) xa_alloc_index(xa, base + 1, GFP_KERNEL);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 708) xa_erase_index(xa, base + 1);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 709)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 710) /* Storing a value should mark it used */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 711) xa_store_index(xa, base + 1, GFP_KERNEL);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 712) xa_alloc_index(xa, base + 2, GFP_KERNEL);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 713)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 714) /* If we then erase base, it should be free */
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 715) xa_erase_index(xa, base);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 716) xa_alloc_index(xa, base, GFP_KERNEL);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 717)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 718) xa_erase_index(xa, base + 1);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 719) xa_erase_index(xa, base + 2);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 720)
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 721) for (i = 1; i < 5000; i++) {
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 722) xa_alloc_index(xa, base + i, GFP_KERNEL);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 723) }
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 724)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 725) xa_destroy(xa);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 726)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 727) /* Check that we fail properly at the limit of allocation */
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 728) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX - 1),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 729) XA_LIMIT(UINT_MAX - 1, UINT_MAX),
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 730) GFP_KERNEL) != 0);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 731) XA_BUG_ON(xa, id != 0xfffffffeU);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 732) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(UINT_MAX),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 733) XA_LIMIT(UINT_MAX - 1, UINT_MAX),
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 734) GFP_KERNEL) != 0);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 735) XA_BUG_ON(xa, id != 0xffffffffU);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 736) id = 3;
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 737) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(0),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 738) XA_LIMIT(UINT_MAX - 1, UINT_MAX),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 739) GFP_KERNEL) != -EBUSY);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 740) XA_BUG_ON(xa, id != 3);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 741) xa_destroy(xa);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 742)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 743) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 744) GFP_KERNEL) != -EBUSY);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 745) XA_BUG_ON(xa, xa_store_index(xa, 3, GFP_KERNEL) != 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 746) XA_BUG_ON(xa, xa_alloc(xa, &id, xa_mk_index(10), XA_LIMIT(10, 5),
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 747) GFP_KERNEL) != -EBUSY);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 748) xa_erase_index(xa, 3);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 749) XA_BUG_ON(xa, !xa_empty(xa));
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 750) }
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 751)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 752) static noinline void check_xa_alloc_2(struct xarray *xa, unsigned int base)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 753) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 754) unsigned int i, id;
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 755) unsigned long index;
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 756) void *entry;
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 757)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 758) /* Allocate and free a NULL and check xa_empty() behaves */
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 759) XA_BUG_ON(xa, !xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 760) XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 761) XA_BUG_ON(xa, id != base);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 762) XA_BUG_ON(xa, xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 763) XA_BUG_ON(xa, xa_erase(xa, id) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 764) XA_BUG_ON(xa, !xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 765)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 766) /* Ditto, but check destroy instead of erase */
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 767) XA_BUG_ON(xa, !xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 768) XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 769) XA_BUG_ON(xa, id != base);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 770) XA_BUG_ON(xa, xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 771) xa_destroy(xa);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 772) XA_BUG_ON(xa, !xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 773)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 774) for (i = base; i < base + 10; i++) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 775) XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b,
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 776) GFP_KERNEL) != 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 777) XA_BUG_ON(xa, id != i);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 778) }
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 779)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 780) XA_BUG_ON(xa, xa_store(xa, 3, xa_mk_index(3), GFP_KERNEL) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 781) XA_BUG_ON(xa, xa_store(xa, 4, xa_mk_index(4), GFP_KERNEL) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 782) XA_BUG_ON(xa, xa_store(xa, 4, NULL, GFP_KERNEL) != xa_mk_index(4));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 783) XA_BUG_ON(xa, xa_erase(xa, 5) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 784) XA_BUG_ON(xa, xa_alloc(xa, &id, NULL, xa_limit_32b, GFP_KERNEL) != 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 785) XA_BUG_ON(xa, id != 5);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 786)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 787) xa_for_each(xa, index, entry) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 788) xa_erase_index(xa, index);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 789) }
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 790)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 791) for (i = base; i < base + 9; i++) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 792) XA_BUG_ON(xa, xa_erase(xa, i) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 793) XA_BUG_ON(xa, xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 794) }
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 795) XA_BUG_ON(xa, xa_erase(xa, 8) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 796) XA_BUG_ON(xa, xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 797) XA_BUG_ON(xa, xa_erase(xa, base + 9) != NULL);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 798) XA_BUG_ON(xa, !xa_empty(xa));
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 799)
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 800) xa_destroy(xa);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 801) }
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 802)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 803) static noinline void check_xa_alloc_3(struct xarray *xa, unsigned int base)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 804) {
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 805) struct xa_limit limit = XA_LIMIT(1, 0x3fff);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 806) u32 next = 0;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 807) unsigned int i, id;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 808) unsigned long index;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 809) void *entry;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 810)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 811) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(1), limit,
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 812) &next, GFP_KERNEL) != 0);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 813) XA_BUG_ON(xa, id != 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 814)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 815) next = 0x3ffd;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 816) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(0x3ffd), limit,
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 817) &next, GFP_KERNEL) != 0);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 818) XA_BUG_ON(xa, id != 0x3ffd);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 819) xa_erase_index(xa, 0x3ffd);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 820) xa_erase_index(xa, 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 821) XA_BUG_ON(xa, !xa_empty(xa));
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 822)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 823) for (i = 0x3ffe; i < 0x4003; i++) {
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 824) if (i < 0x4000)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 825) entry = xa_mk_index(i);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 826) else
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 827) entry = xa_mk_index(i - 0x3fff);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 828) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, entry, limit,
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 829) &next, GFP_KERNEL) != (id == 1));
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 830) XA_BUG_ON(xa, xa_mk_index(id) != entry);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 831) }
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 832)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 833) /* Check wrap-around is handled correctly */
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 834) if (base != 0)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 835) xa_erase_index(xa, base);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 836) xa_erase_index(xa, base + 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 837) next = UINT_MAX;
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 838) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(UINT_MAX),
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 839) xa_limit_32b, &next, GFP_KERNEL) != 0);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 840) XA_BUG_ON(xa, id != UINT_MAX);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 841) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base),
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 842) xa_limit_32b, &next, GFP_KERNEL) != 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 843) XA_BUG_ON(xa, id != base);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 844) XA_BUG_ON(xa, xa_alloc_cyclic(xa, &id, xa_mk_index(base + 1),
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 845) xa_limit_32b, &next, GFP_KERNEL) != 0);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 846) XA_BUG_ON(xa, id != base + 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 847)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 848) xa_for_each(xa, index, entry)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 849) xa_erase_index(xa, index);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 850)
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 851) XA_BUG_ON(xa, !xa_empty(xa));
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 852) }
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 853)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 854) static DEFINE_XARRAY_ALLOC(xa0);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 855) static DEFINE_XARRAY_ALLOC1(xa1);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 856)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 857) static noinline void check_xa_alloc(void)
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 858) {
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 859) check_xa_alloc_1(&xa0, 0);
3ccaf57a6a63a (Matthew Wilcox 2018-10-26 14:43:22 -0400 860) check_xa_alloc_1(&xa1, 1);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 861) check_xa_alloc_2(&xa0, 0);
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 862) check_xa_alloc_2(&xa1, 1);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 863) check_xa_alloc_3(&xa0, 0);
2fa044e51a1f3 (Matthew Wilcox 2018-11-06 14:13:35 -0500 864) check_xa_alloc_3(&xa1, 1);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 865) }
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 866)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 867) static noinline void __check_store_iter(struct xarray *xa, unsigned long start,
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 868) unsigned int order, unsigned int present)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 869) {
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 870) XA_STATE_ORDER(xas, xa, start, order);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 871) void *entry;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 872) unsigned int count = 0;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 873)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 874) retry:
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 875) xas_lock(&xas);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 876) xas_for_each_conflict(&xas, entry) {
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 877) XA_BUG_ON(xa, !xa_is_value(entry));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 878) XA_BUG_ON(xa, entry < xa_mk_index(start));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 879) XA_BUG_ON(xa, entry > xa_mk_index(start + (1UL << order) - 1));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 880) count++;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 881) }
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 882) xas_store(&xas, xa_mk_index(start));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 883) xas_unlock(&xas);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 884) if (xas_nomem(&xas, GFP_KERNEL)) {
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 885) count = 0;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 886) goto retry;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 887) }
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 888) XA_BUG_ON(xa, xas_error(&xas));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 889) XA_BUG_ON(xa, count != present);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 890) XA_BUG_ON(xa, xa_load(xa, start) != xa_mk_index(start));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 891) XA_BUG_ON(xa, xa_load(xa, start + (1UL << order) - 1) !=
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 892) xa_mk_index(start));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 893) xa_erase_index(xa, start);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 894) }
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 895)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 896) static noinline void check_store_iter(struct xarray *xa)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 897) {
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 898) unsigned int i, j;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 899) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 20 : 1;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 900)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 901) for (i = 0; i < max_order; i++) {
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 902) unsigned int min = 1 << i;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 903) unsigned int max = (2 << i) - 1;
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 904) __check_store_iter(xa, 0, i, 0);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 905) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 906) __check_store_iter(xa, min, i, 0);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 907) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 908)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 909) xa_store_index(xa, min, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 910) __check_store_iter(xa, min, i, 1);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 911) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 912) xa_store_index(xa, max, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 913) __check_store_iter(xa, min, i, 1);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 914) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 915)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 916) for (j = 0; j < min; j++)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 917) xa_store_index(xa, j, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 918) __check_store_iter(xa, 0, i, min);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 919) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 920) for (j = 0; j < min; j++)
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 921) xa_store_index(xa, min + j, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 922) __check_store_iter(xa, min, i, min);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 923) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 924) }
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 925) #ifdef CONFIG_XARRAY_MULTI
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 926) xa_store_index(xa, 63, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 927) xa_store_index(xa, 65, GFP_KERNEL);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 928) __check_store_iter(xa, 64, 2, 1);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 929) xa_erase_index(xa, 63);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 930) #endif
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 931) XA_BUG_ON(xa, !xa_empty(xa));
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 932) }
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 933)
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 934) static noinline void check_multi_find_1(struct xarray *xa, unsigned order)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 935) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 936) #ifdef CONFIG_XARRAY_MULTI
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 937) unsigned long multi = 3 << order;
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 938) unsigned long next = 4 << order;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 939) unsigned long index;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 940)
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 941) xa_store_order(xa, multi, order, xa_mk_value(multi), GFP_KERNEL);
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 942) XA_BUG_ON(xa, xa_store_index(xa, next, GFP_KERNEL) != NULL);
c44aa5e8ab58b (Matthew Wilcox (Oracle) 2020-01-17 22:13:21 -0500 943) XA_BUG_ON(xa, xa_store_index(xa, next + 1, GFP_KERNEL) != NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 944)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 945) index = 0;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 946) XA_BUG_ON(xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 947) xa_mk_value(multi));
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 948) XA_BUG_ON(xa, index != multi);
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 949) index = multi + 1;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 950) XA_BUG_ON(xa, xa_find(xa, &index, ULONG_MAX, XA_PRESENT) !=
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 951) xa_mk_value(multi));
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 952) XA_BUG_ON(xa, (index < multi) || (index >= next));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 953) XA_BUG_ON(xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT) !=
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 954) xa_mk_value(next));
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 955) XA_BUG_ON(xa, index != next);
c44aa5e8ab58b (Matthew Wilcox (Oracle) 2020-01-17 22:13:21 -0500 956) XA_BUG_ON(xa, xa_find_after(xa, &index, next, XA_PRESENT) != NULL);
c44aa5e8ab58b (Matthew Wilcox (Oracle) 2020-01-17 22:13:21 -0500 957) XA_BUG_ON(xa, index != next);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 958)
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 959) xa_erase_index(xa, multi);
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 960) xa_erase_index(xa, next);
c44aa5e8ab58b (Matthew Wilcox (Oracle) 2020-01-17 22:13:21 -0500 961) xa_erase_index(xa, next + 1);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 962) XA_BUG_ON(xa, !xa_empty(xa));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 963) #endif
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 964) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 965)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 966) static noinline void check_multi_find_2(struct xarray *xa)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 967) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 968) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 10 : 1;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 969) unsigned int i, j;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 970) void *entry;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 971)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 972) for (i = 0; i < max_order; i++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 973) unsigned long index = 1UL << i;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 974) for (j = 0; j < index; j++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 975) XA_STATE(xas, xa, j + index);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 976) xa_store_index(xa, index - 1, GFP_KERNEL);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 977) xa_store_order(xa, index, i, xa_mk_index(index),
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 978) GFP_KERNEL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 979) rcu_read_lock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 980) xas_for_each(&xas, entry, ULONG_MAX) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 981) xa_erase_index(xa, index);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 982) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 983) rcu_read_unlock();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 984) xa_erase_index(xa, index - 1);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 985) XA_BUG_ON(xa, !xa_empty(xa));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 986) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 987) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 988) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 989)
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 990) static noinline void check_multi_find_3(struct xarray *xa)
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 991) {
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 992) unsigned int order;
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 993)
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 994) for (order = 5; order < order_limit; order++) {
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 995) unsigned long index = 1UL << (order - 5);
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 996)
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 997) XA_BUG_ON(xa, !xa_empty(xa));
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 998) xa_store_order(xa, 0, order - 4, xa_mk_index(0), GFP_KERNEL);
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 999) XA_BUG_ON(xa, xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT));
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 1000) xa_erase_index(xa, 0);
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 1001) }
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 1002) }
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 1003)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1004) static noinline void check_find_1(struct xarray *xa)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1005) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1006) unsigned long i, j, k;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1007)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1008) XA_BUG_ON(xa, !xa_empty(xa));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1009)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1010) /*
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1011) * Check xa_find with all pairs between 0 and 99 inclusive,
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1012) * starting at every index between 0 and 99
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1013) */
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1014) for (i = 0; i < 100; i++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1015) XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1016) xa_set_mark(xa, i, XA_MARK_0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1017) for (j = 0; j < i; j++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1018) XA_BUG_ON(xa, xa_store_index(xa, j, GFP_KERNEL) !=
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1019) NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1020) xa_set_mark(xa, j, XA_MARK_0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1021) for (k = 0; k < 100; k++) {
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1022) unsigned long index = k;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1023) void *entry = xa_find(xa, &index, ULONG_MAX,
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1024) XA_PRESENT);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1025) if (k <= j)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1026) XA_BUG_ON(xa, index != j);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1027) else if (k <= i)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1028) XA_BUG_ON(xa, index != i);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1029) else
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1030) XA_BUG_ON(xa, entry != NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1031)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1032) index = k;
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1033) entry = xa_find(xa, &index, ULONG_MAX,
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1034) XA_MARK_0);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1035) if (k <= j)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1036) XA_BUG_ON(xa, index != j);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1037) else if (k <= i)
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1038) XA_BUG_ON(xa, index != i);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1039) else
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1040) XA_BUG_ON(xa, entry != NULL);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1041) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1042) xa_erase_index(xa, j);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1043) XA_BUG_ON(xa, xa_get_mark(xa, j, XA_MARK_0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1044) XA_BUG_ON(xa, !xa_get_mark(xa, i, XA_MARK_0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1045) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1046) xa_erase_index(xa, i);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1047) XA_BUG_ON(xa, xa_get_mark(xa, i, XA_MARK_0));
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1048) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1049) XA_BUG_ON(xa, !xa_empty(xa));
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1050) }
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1051)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1052) static noinline void check_find_2(struct xarray *xa)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1053) {
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1054) void *entry;
4a31896c5b5a2 (Matthew Wilcox 2018-12-17 14:45:36 -0500 1055) unsigned long i, j, index;
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1056)
4a31896c5b5a2 (Matthew Wilcox 2018-12-17 14:45:36 -0500 1057) xa_for_each(xa, index, entry) {
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1058) XA_BUG_ON(xa, true);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1059) }
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1060)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1061) for (i = 0; i < 1024; i++) {
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1062) xa_store_index(xa, index, GFP_KERNEL);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1063) j = 0;
4a31896c5b5a2 (Matthew Wilcox 2018-12-17 14:45:36 -0500 1064) xa_for_each(xa, index, entry) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1065) XA_BUG_ON(xa, xa_mk_index(index) != entry);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1066) XA_BUG_ON(xa, index != j++);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1067) }
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1068) }
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1069)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1070) xa_destroy(xa);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1071) }
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1072)
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1073) static noinline void check_find_3(struct xarray *xa)
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1074) {
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1075) XA_STATE(xas, xa, 0);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1076) unsigned long i, j, k;
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1077) void *entry;
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1078)
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1079) for (i = 0; i < 100; i++) {
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1080) for (j = 0; j < 100; j++) {
490fd30f85957 (Matthew Wilcox 2018-12-17 17:37:25 -0500 1081) rcu_read_lock();
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1082) for (k = 0; k < 100; k++) {
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1083) xas_set(&xas, j);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1084) xas_for_each_marked(&xas, entry, k, XA_MARK_0)
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1085) ;
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1086) if (j > k)
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1087) XA_BUG_ON(xa,
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1088) xas.xa_node != XAS_RESTART);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1089) }
490fd30f85957 (Matthew Wilcox 2018-12-17 17:37:25 -0500 1090) rcu_read_unlock();
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1091) }
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1092) xa_store_index(xa, i, GFP_KERNEL);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1093) xa_set_mark(xa, i, XA_MARK_0);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1094) }
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1095) xa_destroy(xa);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1096) }
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1097)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1098) static noinline void check_find_4(struct xarray *xa)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1099) {
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1100) unsigned long index = 0;
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1101) void *entry;
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1102)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1103) xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1104)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1105) entry = xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1106) XA_BUG_ON(xa, entry != xa_mk_index(ULONG_MAX));
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1107)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1108) entry = xa_find_after(xa, &index, ULONG_MAX, XA_PRESENT);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1109) XA_BUG_ON(xa, entry);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1110)
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1111) xa_erase_index(xa, ULONG_MAX);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1112) }
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1113)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1114) static noinline void check_find(struct xarray *xa)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1115) {
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 1116) unsigned i;
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 1117)
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1118) check_find_1(xa);
8229706e03e41 (Matthew Wilcox 2018-11-01 16:55:19 -0400 1119) check_find_2(xa);
48483614de97c (Matthew Wilcox 2018-12-13 13:57:42 -0500 1120) check_find_3(xa);
430f24f94c8a1 (Matthew Wilcox (Oracle) 2020-01-17 17:45:12 -0500 1121) check_find_4(xa);
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 1122)
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 1123) for (i = 2; i < 10; i++)
19c30f4dd0923 (Matthew Wilcox (Oracle) 2020-01-17 22:00:41 -0500 1124) check_multi_find_1(xa, i);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1125) check_multi_find_2(xa);
bd40b17ca49d7 (Matthew Wilcox (Oracle) 2020-01-31 05:07:55 -0500 1126) check_multi_find_3(xa);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1127) }
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1128)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1129) /* See find_swap_entry() in mm/shmem.c */
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1130) static noinline unsigned long xa_find_entry(struct xarray *xa, void *item)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1131) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1132) XA_STATE(xas, xa, 0);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1133) unsigned int checked = 0;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1134) void *entry;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1135)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1136) rcu_read_lock();
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1137) xas_for_each(&xas, entry, ULONG_MAX) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1138) if (xas_retry(&xas, entry))
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1139) continue;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1140) if (entry == item)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1141) break;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1142) checked++;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1143) if ((checked % 4) != 0)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1144) continue;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1145) xas_pause(&xas);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1146) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1147) rcu_read_unlock();
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1148)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1149) return entry ? xas.xa_index : -1;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1150) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1151)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1152) static noinline void check_find_entry(struct xarray *xa)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1153) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1154) #ifdef CONFIG_XARRAY_MULTI
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1155) unsigned int order;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1156) unsigned long offset, index;
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1157)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1158) for (order = 0; order < 20; order++) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1159) for (offset = 0; offset < (1UL << (order + 3));
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1160) offset += (1UL << order)) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1161) for (index = 0; index < (1UL << (order + 5));
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1162) index += (1UL << order)) {
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1163) xa_store_order(xa, index, order,
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1164) xa_mk_index(index), GFP_KERNEL);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1165) XA_BUG_ON(xa, xa_load(xa, index) !=
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1166) xa_mk_index(index));
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1167) XA_BUG_ON(xa, xa_find_entry(xa,
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1168) xa_mk_index(index)) != index);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1169) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1170) XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1171) xa_destroy(xa);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1172) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1173) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1174) #endif
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1175)
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1176) XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1177) xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1178) XA_BUG_ON(xa, xa_find_entry(xa, xa) != -1);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1179) XA_BUG_ON(xa, xa_find_entry(xa, xa_mk_index(ULONG_MAX)) != -1);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1180) xa_erase_index(xa, ULONG_MAX);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1181) XA_BUG_ON(xa, !xa_empty(xa));
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1182) }
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1183)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1184) static noinline void check_pause(struct xarray *xa)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1185) {
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1186) XA_STATE(xas, xa, 0);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1187) void *entry;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1188) unsigned int order;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1189) unsigned long index = 1;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1190) unsigned int count = 0;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1191)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1192) for (order = 0; order < order_limit; order++) {
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1193) XA_BUG_ON(xa, xa_store_order(xa, index, order,
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1194) xa_mk_index(index), GFP_KERNEL));
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1195) index += 1UL << order;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1196) }
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1197)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1198) rcu_read_lock();
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1199) xas_for_each(&xas, entry, ULONG_MAX) {
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1200) XA_BUG_ON(xa, entry != xa_mk_index(1UL << count));
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1201) count++;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1202) }
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1203) rcu_read_unlock();
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1204) XA_BUG_ON(xa, count != order_limit);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1205)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1206) count = 0;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1207) xas_set(&xas, 0);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1208) rcu_read_lock();
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1209) xas_for_each(&xas, entry, ULONG_MAX) {
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1210) XA_BUG_ON(xa, entry != xa_mk_index(1UL << count));
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1211) count++;
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1212) xas_pause(&xas);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1213) }
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1214) rcu_read_unlock();
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1215) XA_BUG_ON(xa, count != order_limit);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1216)
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1217) xa_destroy(xa);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1218) }
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1219)
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1220) static noinline void check_move_tiny(struct xarray *xa)
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1221) {
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1222) XA_STATE(xas, xa, 0);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1223)
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1224) XA_BUG_ON(xa, !xa_empty(xa));
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1225) rcu_read_lock();
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1226) XA_BUG_ON(xa, xas_next(&xas) != NULL);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1227) XA_BUG_ON(xa, xas_next(&xas) != NULL);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1228) rcu_read_unlock();
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1229) xa_store_index(xa, 0, GFP_KERNEL);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1230) rcu_read_lock();
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1231) xas_set(&xas, 0);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1232) XA_BUG_ON(xa, xas_next(&xas) != xa_mk_index(0));
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1233) XA_BUG_ON(xa, xas_next(&xas) != NULL);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1234) xas_set(&xas, 0);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1235) XA_BUG_ON(xa, xas_prev(&xas) != xa_mk_index(0));
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1236) XA_BUG_ON(xa, xas_prev(&xas) != NULL);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1237) rcu_read_unlock();
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1238) xa_erase_index(xa, 0);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1239) XA_BUG_ON(xa, !xa_empty(xa));
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1240) }
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1241)
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1242) static noinline void check_move_max(struct xarray *xa)
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1243) {
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1244) XA_STATE(xas, xa, 0);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1245)
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1246) xa_store_index(xa, ULONG_MAX, GFP_KERNEL);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1247) rcu_read_lock();
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1248) XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1249) XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != NULL);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1250) rcu_read_unlock();
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1251)
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1252) xas_set(&xas, 0);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1253) rcu_read_lock();
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1254) XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != xa_mk_index(ULONG_MAX));
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1255) xas_pause(&xas);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1256) XA_BUG_ON(xa, xas_find(&xas, ULONG_MAX) != NULL);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1257) rcu_read_unlock();
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1258)
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1259) xa_erase_index(xa, ULONG_MAX);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1260) XA_BUG_ON(xa, !xa_empty(xa));
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1261) }
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1262)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1263) static noinline void check_move_small(struct xarray *xa, unsigned long idx)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1264) {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1265) XA_STATE(xas, xa, 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1266) unsigned long i;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1267)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1268) xa_store_index(xa, 0, GFP_KERNEL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1269) xa_store_index(xa, idx, GFP_KERNEL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1270)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1271) rcu_read_lock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1272) for (i = 0; i < idx * 4; i++) {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1273) void *entry = xas_next(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1274) if (i <= idx)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1275) XA_BUG_ON(xa, xas.xa_node == XAS_RESTART);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1276) XA_BUG_ON(xa, xas.xa_index != i);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1277) if (i == 0 || i == idx)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1278) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1279) else
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1280) XA_BUG_ON(xa, entry != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1281) }
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1282) xas_next(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1283) XA_BUG_ON(xa, xas.xa_index != i);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1284)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1285) do {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1286) void *entry = xas_prev(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1287) i--;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1288) if (i <= idx)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1289) XA_BUG_ON(xa, xas.xa_node == XAS_RESTART);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1290) XA_BUG_ON(xa, xas.xa_index != i);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1291) if (i == 0 || i == idx)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1292) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1293) else
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1294) XA_BUG_ON(xa, entry != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1295) } while (i > 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1296)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1297) xas_set(&xas, ULONG_MAX);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1298) XA_BUG_ON(xa, xas_next(&xas) != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1299) XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1300) XA_BUG_ON(xa, xas_next(&xas) != xa_mk_value(0));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1301) XA_BUG_ON(xa, xas.xa_index != 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1302) XA_BUG_ON(xa, xas_prev(&xas) != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1303) XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1304) rcu_read_unlock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1305)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1306) xa_erase_index(xa, 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1307) xa_erase_index(xa, idx);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1308) XA_BUG_ON(xa, !xa_empty(xa));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1309) }
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1310)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1311) static noinline void check_move(struct xarray *xa)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1312) {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1313) XA_STATE(xas, xa, (1 << 16) - 1);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1314) unsigned long i;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1315)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1316) for (i = 0; i < (1 << 16); i++)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1317) XA_BUG_ON(xa, xa_store_index(xa, i, GFP_KERNEL) != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1318)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1319) rcu_read_lock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1320) do {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1321) void *entry = xas_prev(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1322) i--;
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1323) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1324) XA_BUG_ON(xa, i != xas.xa_index);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1325) } while (i != 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1326)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1327) XA_BUG_ON(xa, xas_prev(&xas) != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1328) XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1329)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1330) do {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1331) void *entry = xas_next(&xas);
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1332) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1333) XA_BUG_ON(xa, i != xas.xa_index);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1334) i++;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1335) } while (i < (1 << 16));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1336) rcu_read_unlock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1337)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1338) for (i = (1 << 8); i < (1 << 15); i++)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1339) xa_erase_index(xa, i);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1340)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1341) i = xas.xa_index;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1342)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1343) rcu_read_lock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1344) do {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1345) void *entry = xas_prev(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1346) i--;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1347) if ((i < (1 << 8)) || (i >= (1 << 15)))
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1348) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1349) else
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1350) XA_BUG_ON(xa, entry != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1351) XA_BUG_ON(xa, i != xas.xa_index);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1352) } while (i != 0);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1353)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1354) XA_BUG_ON(xa, xas_prev(&xas) != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1355) XA_BUG_ON(xa, xas.xa_index != ULONG_MAX);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1356)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1357) do {
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1358) void *entry = xas_next(&xas);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1359) if ((i < (1 << 8)) || (i >= (1 << 15)))
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1360) XA_BUG_ON(xa, entry != xa_mk_index(i));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1361) else
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1362) XA_BUG_ON(xa, entry != NULL);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1363) XA_BUG_ON(xa, i != xas.xa_index);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1364) i++;
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1365) } while (i < (1 << 16));
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1366) rcu_read_unlock();
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1367)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1368) xa_destroy(xa);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1369)
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1370) check_move_tiny(xa);
82a22311b7a68 (Matthew Wilcox (Oracle) 2019-11-07 22:49:11 -0500 1371) check_move_max(xa);
91abab83839aa (Matthew Wilcox (Oracle) 2019-07-01 17:03:29 -0400 1372)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1373) for (i = 0; i < 16; i++)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1374) check_move_small(xa, 1UL << i);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1375)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1376) for (i = 2; i < 16; i++)
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1377) check_move_small(xa, (1UL << i) - 1);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1378) }
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1379)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1380) static noinline void xa_store_many_order(struct xarray *xa,
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1381) unsigned long index, unsigned order)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1382) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1383) XA_STATE_ORDER(xas, xa, index, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1384) unsigned int i = 0;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1385)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1386) do {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1387) xas_lock(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1388) XA_BUG_ON(xa, xas_find_conflict(&xas));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1389) xas_create_range(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1390) if (xas_error(&xas))
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1391) goto unlock;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1392) for (i = 0; i < (1U << order); i++) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1393) XA_BUG_ON(xa, xas_store(&xas, xa_mk_index(index + i)));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1394) xas_next(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1395) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1396) unlock:
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1397) xas_unlock(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1398) } while (xas_nomem(&xas, GFP_KERNEL));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1399)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1400) XA_BUG_ON(xa, xas_error(&xas));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1401) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1402)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1403) static noinline void check_create_range_1(struct xarray *xa,
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1404) unsigned long index, unsigned order)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1405) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1406) unsigned long i;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1407)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1408) xa_store_many_order(xa, index, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1409) for (i = index; i < index + (1UL << order); i++)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1410) xa_erase_index(xa, i);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1411) XA_BUG_ON(xa, !xa_empty(xa));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1412) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1413)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1414) static noinline void check_create_range_2(struct xarray *xa, unsigned order)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1415) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1416) unsigned long i;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1417) unsigned long nr = 1UL << order;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1418)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1419) for (i = 0; i < nr * nr; i += nr)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1420) xa_store_many_order(xa, i, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1421) for (i = 0; i < nr * nr; i++)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1422) xa_erase_index(xa, i);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1423) XA_BUG_ON(xa, !xa_empty(xa));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1424) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1425)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1426) static noinline void check_create_range_3(void)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1427) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1428) XA_STATE(xas, NULL, 0);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1429) xas_set_err(&xas, -EEXIST);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1430) xas_create_range(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1431) XA_BUG_ON(NULL, xas_error(&xas) != -EEXIST);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1432) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1433)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1434) static noinline void check_create_range_4(struct xarray *xa,
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1435) unsigned long index, unsigned order)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1436) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1437) XA_STATE_ORDER(xas, xa, index, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1438) unsigned long base = xas.xa_index;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1439) unsigned long i = 0;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1440)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1441) xa_store_index(xa, index, GFP_KERNEL);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1442) do {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1443) xas_lock(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1444) xas_create_range(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1445) if (xas_error(&xas))
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1446) goto unlock;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1447) for (i = 0; i < (1UL << order); i++) {
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1448) void *old = xas_store(&xas, xa_mk_index(base + i));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1449) if (xas.xa_index == index)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1450) XA_BUG_ON(xa, old != xa_mk_index(base + i));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1451) else
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1452) XA_BUG_ON(xa, old != NULL);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1453) xas_next(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1454) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1455) unlock:
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1456) xas_unlock(&xas);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1457) } while (xas_nomem(&xas, GFP_KERNEL));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1458)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1459) XA_BUG_ON(xa, xas_error(&xas));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1460)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1461) for (i = base; i < base + (1UL << order); i++)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1462) xa_erase_index(xa, i);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1463) XA_BUG_ON(xa, !xa_empty(xa));
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1464) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1465)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1466) static noinline void check_create_range(struct xarray *xa)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1467) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1468) unsigned int order;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1469) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 12 : 1;
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1470)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1471) for (order = 0; order < max_order; order++) {
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1472) check_create_range_1(xa, 0, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1473) check_create_range_1(xa, 1U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1474) check_create_range_1(xa, 2U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1475) check_create_range_1(xa, 3U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1476) check_create_range_1(xa, 1U << 24, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1477) if (order < 10)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1478) check_create_range_2(xa, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1479)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1480) check_create_range_4(xa, 0, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1481) check_create_range_4(xa, 1U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1482) check_create_range_4(xa, 2U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1483) check_create_range_4(xa, 3U << order, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1484) check_create_range_4(xa, 1U << 24, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1485)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1486) check_create_range_4(xa, 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1487) check_create_range_4(xa, (1U << order) + 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1488) check_create_range_4(xa, (2U << order) + 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1489) check_create_range_4(xa, (2U << order) - 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1490) check_create_range_4(xa, (3U << order) + 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1491) check_create_range_4(xa, (3U << order) - 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1492) check_create_range_4(xa, (1U << 24) + 1, order);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1493) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1494)
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1495) check_create_range_3();
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1496) }
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1497)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1498) static noinline void __check_store_range(struct xarray *xa, unsigned long first,
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1499) unsigned long last)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1500) {
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1501) #ifdef CONFIG_XARRAY_MULTI
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1502) xa_store_range(xa, first, last, xa_mk_index(first), GFP_KERNEL);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1503)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1504) XA_BUG_ON(xa, xa_load(xa, first) != xa_mk_index(first));
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1505) XA_BUG_ON(xa, xa_load(xa, last) != xa_mk_index(first));
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1506) XA_BUG_ON(xa, xa_load(xa, first - 1) != NULL);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1507) XA_BUG_ON(xa, xa_load(xa, last + 1) != NULL);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1508)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1509) xa_store_range(xa, first, last, NULL, GFP_KERNEL);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1510) #endif
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1511)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1512) XA_BUG_ON(xa, !xa_empty(xa));
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1513) }
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1514)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1515) static noinline void check_store_range(struct xarray *xa)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1516) {
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1517) unsigned long i, j;
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1518)
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1519) for (i = 0; i < 128; i++) {
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1520) for (j = i; j < 128; j++) {
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1521) __check_store_range(xa, i, j);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1522) __check_store_range(xa, 128 + i, 128 + j);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1523) __check_store_range(xa, 4095 + i, 4095 + j);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1524) __check_store_range(xa, 4096 + i, 4096 + j);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1525) __check_store_range(xa, 123456 + i, 123456 + j);
5404a7f1c21cf (Matthew Wilcox 2018-11-05 09:34:04 -0500 1526) __check_store_range(xa, (1 << 24) + i, (1 << 24) + j);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1527) }
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1528) }
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1529) }
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1530)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1531) #ifdef CONFIG_XARRAY_MULTI
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1532) static void check_split_1(struct xarray *xa, unsigned long index,
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1533) unsigned int order, unsigned int new_order)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1534) {
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1535) XA_STATE_ORDER(xas, xa, index, new_order);
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1536) unsigned int i;
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1537)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1538) xa_store_order(xa, index, order, xa, GFP_KERNEL);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1539)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1540) xas_split_alloc(&xas, xa, order, GFP_KERNEL);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1541) xas_lock(&xas);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1542) xas_split(&xas, xa, order);
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1543) for (i = 0; i < (1 << order); i += (1 << new_order))
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1544) __xa_store(xa, index + i, xa_mk_index(index + i), 0);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1545) xas_unlock(&xas);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1546)
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1547) for (i = 0; i < (1 << order); i++) {
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1548) unsigned int val = index + (i & ~((1 << new_order) - 1));
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1549) XA_BUG_ON(xa, xa_load(xa, index + i) != xa_mk_index(val));
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1550) }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1551)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1552) xa_set_mark(xa, index, XA_MARK_0);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1553) XA_BUG_ON(xa, !xa_get_mark(xa, index, XA_MARK_0));
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1554)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1555) xa_destroy(xa);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1556) }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1557)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1558) static noinline void check_split(struct xarray *xa)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1559) {
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1560) unsigned int order, new_order;
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1561)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1562) XA_BUG_ON(xa, !xa_empty(xa));
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1563)
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1564) for (order = 1; order < 2 * XA_CHUNK_SHIFT; order++) {
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1565) for (new_order = 0; new_order < order; new_order++) {
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1566) check_split_1(xa, 0, order, new_order);
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1567) check_split_1(xa, 1UL << order, order, new_order);
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1568) check_split_1(xa, 3UL << order, order, new_order);
3012110d71f41 (Matthew Wilcox (Oracle) 2020-11-19 08:32:31 -0500 1569) }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1570) }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1571) }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1572) #else
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1573) static void check_split(struct xarray *xa) { }
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1574) #endif
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1575)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1576) static void check_align_1(struct xarray *xa, char *name)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1577) {
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1578) int i;
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1579) unsigned int id;
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1580) unsigned long index;
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1581) void *entry;
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1582)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1583) for (i = 0; i < 8; i++) {
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 1584) XA_BUG_ON(xa, xa_alloc(xa, &id, name + i, xa_limit_32b,
a3e4d3f97ec84 (Matthew Wilcox 2018-12-31 10:41:01 -0500 1585) GFP_KERNEL) != 0);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1586) XA_BUG_ON(xa, id != i);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1587) }
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1588) xa_for_each(xa, index, entry)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1589) XA_BUG_ON(xa, xa_is_err(entry));
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1590) xa_destroy(xa);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1591) }
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1592)
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1593) /*
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1594) * We should always be able to store without allocating memory after
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1595) * reserving a slot.
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1596) */
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1597) static void check_align_2(struct xarray *xa, char *name)
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1598) {
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1599) int i;
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1600)
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1601) XA_BUG_ON(xa, !xa_empty(xa));
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1602)
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1603) for (i = 0; i < 8; i++) {
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1604) XA_BUG_ON(xa, xa_store(xa, 0, name + i, GFP_KERNEL) != NULL);
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1605) xa_erase(xa, 0);
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1606) }
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1607)
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1608) for (i = 0; i < 8; i++) {
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1609) XA_BUG_ON(xa, xa_reserve(xa, 0, GFP_KERNEL) != 0);
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1610) XA_BUG_ON(xa, xa_store(xa, 0, name + i, 0) != NULL);
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1611) xa_erase(xa, 0);
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1612) }
4a5c8d898948d (Matthew Wilcox 2019-02-21 17:54:44 -0500 1613)
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1614) XA_BUG_ON(xa, !xa_empty(xa));
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1615) }
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1616)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1617) static noinline void check_align(struct xarray *xa)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1618) {
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1619) char name[] = "Motorola 68000";
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1620)
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1621) check_align_1(xa, name);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1622) check_align_1(xa, name + 1);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1623) check_align_1(xa, name + 2);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1624) check_align_1(xa, name + 3);
2fbe967b3eb74 (Matthew Wilcox 2019-02-21 17:36:45 -0500 1625) check_align_2(xa, name);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1626) }
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1627)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1628) static LIST_HEAD(shadow_nodes);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1629)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1630) static void test_update_node(struct xa_node *node)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1631) {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1632) if (node->count && node->count == node->nr_values) {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1633) if (list_empty(&node->private_list))
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1634) list_add(&shadow_nodes, &node->private_list);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1635) } else {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1636) if (!list_empty(&node->private_list))
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1637) list_del_init(&node->private_list);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1638) }
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1639) }
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1640)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1641) static noinline void shadow_remove(struct xarray *xa)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1642) {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1643) struct xa_node *node;
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1644)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1645) xa_lock(xa);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1646) while ((node = list_first_entry_or_null(&shadow_nodes,
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1647) struct xa_node, private_list))) {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1648) XA_BUG_ON(xa, node->array != xa);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1649) list_del_init(&node->private_list);
f82cd2f0b5eb7 (Matthew Wilcox (Oracle) 2020-08-18 09:05:56 -0400 1650) xa_delete_node(node, test_update_node);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1651) }
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1652) xa_unlock(xa);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1653) }
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1654)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1655) static noinline void check_workingset(struct xarray *xa, unsigned long index)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1656) {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1657) XA_STATE(xas, xa, index);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1658) xas_set_update(&xas, test_update_node);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1659)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1660) do {
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1661) xas_lock(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1662) xas_store(&xas, xa_mk_value(0));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1663) xas_next(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1664) xas_store(&xas, xa_mk_value(1));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1665) xas_unlock(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1666) } while (xas_nomem(&xas, GFP_KERNEL));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1667)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1668) XA_BUG_ON(xa, list_empty(&shadow_nodes));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1669)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1670) xas_lock(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1671) xas_next(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1672) xas_store(&xas, &xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1673) XA_BUG_ON(xa, !list_empty(&shadow_nodes));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1674)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1675) xas_store(&xas, xa_mk_value(2));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1676) xas_unlock(&xas);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1677) XA_BUG_ON(xa, list_empty(&shadow_nodes));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1678)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1679) shadow_remove(xa);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1680) XA_BUG_ON(xa, !list_empty(&shadow_nodes));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1681) XA_BUG_ON(xa, !xa_empty(xa));
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1682) }
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1683)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1684) /*
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1685) * Check that the pointer / value / sibling entries are accounted the
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1686) * way we expect them to be.
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1687) */
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1688) static noinline void check_account(struct xarray *xa)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1689) {
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1690) #ifdef CONFIG_XARRAY_MULTI
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1691) unsigned int order;
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1692)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1693) for (order = 1; order < 12; order++) {
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1694) XA_STATE(xas, xa, 1 << order);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1695)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1696) xa_store_order(xa, 0, order, xa, GFP_KERNEL);
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 1697) rcu_read_lock();
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1698) xas_load(&xas);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1699) XA_BUG_ON(xa, xas.xa_node->count == 0);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1700) XA_BUG_ON(xa, xas.xa_node->count > (1 << order));
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1701) XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
fffc9a260e38a (Matthew Wilcox 2018-11-19 09:36:29 -0500 1702) rcu_read_unlock();
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1703)
b7677a132a4c2 (Matthew Wilcox 2018-11-05 13:19:54 -0500 1704) xa_store_order(xa, 1 << order, order, xa_mk_index(1UL << order),
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1705) GFP_KERNEL);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1706) XA_BUG_ON(xa, xas.xa_node->count != xas.xa_node->nr_values * 2);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1707)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1708) xa_erase(xa, 1 << order);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1709) XA_BUG_ON(xa, xas.xa_node->nr_values != 0);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1710)
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1711) xa_erase(xa, 0);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1712) XA_BUG_ON(xa, !xa_empty(xa));
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1713) }
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1714) #endif
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1715) }
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1716)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1717) static noinline void check_get_order(struct xarray *xa)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1718) {
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1719) unsigned int max_order = IS_ENABLED(CONFIG_XARRAY_MULTI) ? 20 : 1;
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1720) unsigned int order;
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1721) unsigned long i, j;
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1722)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1723) for (i = 0; i < 3; i++)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1724) XA_BUG_ON(xa, xa_get_order(xa, i) != 0);
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1725)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1726) for (order = 0; order < max_order; order++) {
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1727) for (i = 0; i < 10; i++) {
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1728) xa_store_order(xa, i << order, order,
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1729) xa_mk_index(i << order), GFP_KERNEL);
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1730) for (j = i << order; j < (i + 1) << order; j++)
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1731) XA_BUG_ON(xa, xa_get_order(xa, j) != order);
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1732) xa_erase(xa, i << order);
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1733) }
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1734) }
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1735) }
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1736)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1737) static noinline void check_destroy(struct xarray *xa)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1738) {
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1739) unsigned long index;
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1740)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1741) XA_BUG_ON(xa, !xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1742)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1743) /* Destroying an empty array is a no-op */
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1744) xa_destroy(xa);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1745) XA_BUG_ON(xa, !xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1746)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1747) /* Destroying an array with a single entry */
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1748) for (index = 0; index < 1000; index++) {
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1749) xa_store_index(xa, index, GFP_KERNEL);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1750) XA_BUG_ON(xa, xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1751) xa_destroy(xa);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1752) XA_BUG_ON(xa, !xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1753) }
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1754)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1755) /* Destroying an array with a single entry at ULONG_MAX */
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1756) xa_store(xa, ULONG_MAX, xa, GFP_KERNEL);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1757) XA_BUG_ON(xa, xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1758) xa_destroy(xa);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1759) XA_BUG_ON(xa, !xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1760)
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1761) #ifdef CONFIG_XARRAY_MULTI
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1762) /* Destroying an array with a multi-index entry */
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1763) xa_store_order(xa, 1 << 11, 11, xa, GFP_KERNEL);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1764) XA_BUG_ON(xa, xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1765) xa_destroy(xa);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1766) XA_BUG_ON(xa, !xa_empty(xa));
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1767) #endif
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1768) }
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1769)
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 1770) static DEFINE_XARRAY(array);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1771)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1772) static int xarray_checks(void)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1773) {
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 1774) check_xa_err(&array);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1775) check_xas_retry(&array);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1776) check_xa_load(&array);
9b89a03551446 (Matthew Wilcox 2017-11-10 09:34:31 -0500 1777) check_xa_mark(&array);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 1778) check_xa_shrink(&array);
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1779) check_xas_erase(&array);
12fd2aee6db76 (Matthew Wilcox 2019-03-09 22:25:27 -0500 1780) check_insert(&array);
41aec91f55985 (Matthew Wilcox 2017-11-10 15:34:55 -0500 1781) check_cmpxchg(&array);
9f14d4f1f1045 (Matthew Wilcox 2018-10-01 14:54:59 -0400 1782) check_reserve(&array);
b38f6c5027068 (Matthew Wilcox 2019-02-20 11:30:49 -0500 1783) check_reserve(&xa0);
58d6ea3085f2e (Matthew Wilcox 2017-11-10 15:15:08 -0500 1784) check_multi_store(&array);
57417cebc96b5 (Matthew Wilcox (Oracle) 2020-10-15 20:05:13 -0700 1785) check_get_order(&array);
371c752dc6694 (Matthew Wilcox 2018-07-04 10:50:12 -0400 1786) check_xa_alloc();
b803b42823d0d (Matthew Wilcox 2017-11-14 08:30:11 -0500 1787) check_find(&array);
e21a29552fa3f (Matthew Wilcox 2017-11-22 08:36:00 -0500 1788) check_find_entry(&array);
c36d451ad386b (Matthew Wilcox (Oracle) 2020-01-31 06:17:09 -0500 1789) check_pause(&array);
d6427f8179b5d (Matthew Wilcox 2018-08-28 16:13:16 -0400 1790) check_account(&array);
687149fca1f37 (Matthew Wilcox 2017-11-17 08:16:34 -0500 1791) check_destroy(&array);
64d3e9a9e0cc5 (Matthew Wilcox 2017-12-01 00:06:52 -0500 1792) check_move(&array);
2264f5132fe45 (Matthew Wilcox 2017-12-04 00:11:48 -0500 1793) check_create_range(&array);
0e9446c35a809 (Matthew Wilcox 2018-08-15 14:13:29 -0400 1794) check_store_range(&array);
4e99d4e9579d3 (Matthew Wilcox 2018-06-01 22:46:02 -0400 1795) check_store_iter(&array);
76b4e52995654 (Matthew Wilcox 2018-12-28 23:20:44 -0500 1796) check_align(&xa0);
8fc75643c5e14 (Matthew Wilcox (Oracle) 2020-10-15 20:05:16 -0700 1797) check_split(&array);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1798)
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1799) check_workingset(&array, 0);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1800) check_workingset(&array, 64);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1801) check_workingset(&array, 4096);
a97e7904c0806 (Matthew Wilcox 2017-11-24 14:24:59 -0500 1802)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1803) printk("XArray: %u of %u tests passed\n", tests_passed, tests_run);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1804) return (tests_run == tests_passed) ? 0 : -EINVAL;
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1805) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1806)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1807) static void xarray_exit(void)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1808) {
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1809) }
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1810)
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1811) module_init(xarray_checks);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1812) module_exit(xarray_exit);
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1813) MODULE_AUTHOR("Matthew Wilcox <willy@infradead.org>");
ad3d6c7263e36 (Matthew Wilcox 2017-11-07 14:57:46 -0500 1814) MODULE_LICENSE("GPL");
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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