2522fe45a186e (Thomas Gleixner 2019-05-28 09:57:20 -0700 1) // SPDX-License-Identifier: GPL-2.0-only
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 2) /******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 3) *******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 4) **
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 5) ** Copyright (C) 2005-2009 Red Hat, Inc. All rights reserved.
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 6) **
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 7) **
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 8) *******************************************************************************
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 9) ******************************************************************************/
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 10)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 11) #include <linux/pagemap.h>
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 12) #include <linux/seq_file.h>
7963b8a59845e (Paul Gortmaker 2016-09-19 16:44:50 -0400 13) #include <linux/init.h>
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 14) #include <linux/ctype.h>
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 15) #include <linux/debugfs.h>
5a0e3ad6af866 (Tejun Heo 2010-03-24 17:04:11 +0900 16) #include <linux/slab.h>
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 17)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 18) #include "dlm_internal.h"
916297aad5de2 (Josef Bacik 2007-05-16 15:56:13 -0400 19) #include "lock.h"
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 20)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 21) #define DLM_DEBUG_BUF_LEN 4096
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 22) static char debug_buf[DLM_DEBUG_BUF_LEN];
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 23) static struct mutex debug_buf_lock;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 24)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 25) static struct dentry *dlm_root;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 26)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 27) static char *print_lockmode(int mode)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 28) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 29) switch (mode) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 30) case DLM_LOCK_IV:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 31) return "--";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 32) case DLM_LOCK_NL:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 33) return "NL";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 34) case DLM_LOCK_CR:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 35) return "CR";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 36) case DLM_LOCK_CW:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 37) return "CW";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 38) case DLM_LOCK_PR:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 39) return "PR";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 40) case DLM_LOCK_PW:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 41) return "PW";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 42) case DLM_LOCK_EX:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 43) return "EX";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 44) default:
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 45) return "??";
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 46) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 47) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 48)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 49) static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 50) struct dlm_rsb *res)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 51) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 52) seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 53)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 54) if (lkb->lkb_status == DLM_LKSTS_CONVERT ||
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 55) lkb->lkb_status == DLM_LKSTS_WAITING)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 56) seq_printf(s, " (%s)", print_lockmode(lkb->lkb_rqmode));
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 57)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 58) if (lkb->lkb_nodeid) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 59) if (lkb->lkb_nodeid != res->res_nodeid)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 60) seq_printf(s, " Remote: %3d %08x", lkb->lkb_nodeid,
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 61) lkb->lkb_remid);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 62) else
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 63) seq_printf(s, " Master: %08x", lkb->lkb_remid);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 64) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 65)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 66) if (lkb->lkb_wait_type)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 67) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 68)
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 69) seq_putc(s, '\n');
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 70) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 71)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 72) static void print_format1(struct dlm_rsb *res, struct seq_file *s)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 73) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 74) struct dlm_lkb *lkb;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 75) int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 76)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 77) lock_rsb(res);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 78)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 79) seq_printf(s, "\nResource %p Name (len=%d) \"", res, res->res_length);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 80)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 81) for (i = 0; i < res->res_length; i++) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 82) if (isprint(res->res_name[i]))
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 83) seq_printf(s, "%c", res->res_name[i]);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 84) else
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 85) seq_printf(s, "%c", '.');
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 86) }
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 87)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 88) if (res->res_nodeid > 0)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 89) seq_printf(s, "\"\nLocal Copy, Master is node %d\n",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 90) res->res_nodeid);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 91) else if (res->res_nodeid == 0)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 92) seq_puts(s, "\"\nMaster Copy\n");
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 93) else if (res->res_nodeid == -1)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 94) seq_printf(s, "\"\nLooking up master (lkid %x)\n",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 95) res->res_first_lkid);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 96) else
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 97) seq_printf(s, "\"\nInvalid master %d\n", res->res_nodeid);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 98) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 99) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 100)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 101) /* Print the LVB: */
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 102) if (res->res_lvbptr) {
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 103) seq_puts(s, "LVB: ");
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 104) for (i = 0; i < lvblen; i++) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 105) if (i == lvblen / 2)
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 106) seq_puts(s, "\n ");
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 107) seq_printf(s, "%02x ",
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 108) (unsigned char) res->res_lvbptr[i]);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 109) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 110) if (rsb_flag(res, RSB_VALNOTVALID))
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 111) seq_puts(s, " (INVALID)");
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 112) seq_putc(s, '\n');
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 113) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 114) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 115) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 116)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 117) root_list = !list_empty(&res->res_root_list);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 118) recover_list = !list_empty(&res->res_recover_list);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 119)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 120) if (root_list || recover_list) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 121) seq_printf(s, "Recovery: root %d recover %d flags %lx count %d\n",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 122) root_list, recover_list,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 123) res->res_flags, res->res_recover_locks_count);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 124) }
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 125)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 126) /* Print the locks attached to this resource */
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 127) seq_puts(s, "Granted Queue\n");
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 128) list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 129) print_format1_lock(s, lkb, res);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 130) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 131) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 132) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 133)
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 134) seq_puts(s, "Conversion Queue\n");
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 135) list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 136) print_format1_lock(s, lkb, res);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 137) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 138) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 139) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 140)
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 141) seq_puts(s, "Waiting Queue\n");
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 142) list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 143) print_format1_lock(s, lkb, res);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 144) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 145) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 146) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 147)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 148) if (list_empty(&res->res_lookup))
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 149) goto out;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 150)
c1d4518c4e530 (Fabian Frederick 2014-06-06 14:38:25 -0700 151) seq_puts(s, "Lookup Queue\n");
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 152) list_for_each_entry(lkb, &res->res_lookup, lkb_rsb_lookup) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 153) seq_printf(s, "%08x %s",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 154) lkb->lkb_id, print_lockmode(lkb->lkb_rqmode));
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 155) if (lkb->lkb_wait_type)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 156) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type);
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 157) seq_putc(s, '\n');
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 158) if (seq_has_overflowed(s))
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 159) goto out;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 160) }
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 161) out:
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 162) unlock_rsb(res);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 163) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 164)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 165) static void print_format2_lock(struct seq_file *s, struct dlm_lkb *lkb,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 166) struct dlm_rsb *r)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 167) {
eeda418d8c264 (David Teigland 2008-12-09 14:12:21 -0600 168) u64 xid = 0;
eeda418d8c264 (David Teigland 2008-12-09 14:12:21 -0600 169) u64 us;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 170)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 171) if (lkb->lkb_flags & DLM_IFL_USER) {
d292c0cc489fa (David Teigland 2008-02-06 23:27:04 -0600 172) if (lkb->lkb_ua)
d292c0cc489fa (David Teigland 2008-02-06 23:27:04 -0600 173) xid = lkb->lkb_ua->xid;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 174) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 175)
eeda418d8c264 (David Teigland 2008-12-09 14:12:21 -0600 176) /* microseconds since lkb was added to current queue */
eeda418d8c264 (David Teigland 2008-12-09 14:12:21 -0600 177) us = ktime_to_us(ktime_sub(ktime_get(), lkb->lkb_timestamp));
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 178)
eeda418d8c264 (David Teigland 2008-12-09 14:12:21 -0600 179) /* id nodeid remid pid xid exflags flags sts grmode rqmode time_us
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 180) r_nodeid r_len r_name */
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 181)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 182) seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %llu %u %d \"%s\"\n",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 183) lkb->lkb_id,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 184) lkb->lkb_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 185) lkb->lkb_remid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 186) lkb->lkb_ownpid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 187) (unsigned long long)xid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 188) lkb->lkb_exflags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 189) lkb->lkb_flags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 190) lkb->lkb_status,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 191) lkb->lkb_grmode,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 192) lkb->lkb_rqmode,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 193) (unsigned long long)us,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 194) r->res_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 195) r->res_length,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 196) r->res_name);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 197) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 198)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 199) static void print_format2(struct dlm_rsb *r, struct seq_file *s)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 200) {
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 201) struct dlm_lkb *lkb;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 202)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 203) lock_rsb(r);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 204)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 205) list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 206) print_format2_lock(s, lkb, r);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 207) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 208) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 209) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 210)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 211) list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 212) print_format2_lock(s, lkb, r);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 213) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 214) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 215) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 216)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 217) list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 218) print_format2_lock(s, lkb, r);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 219) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 220) goto out;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 221) }
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 222) out:
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 223) unlock_rsb(r);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 224) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 225)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 226) static void print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 227) int rsb_lookup)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 228) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 229) u64 xid = 0;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 230)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 231) if (lkb->lkb_flags & DLM_IFL_USER) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 232) if (lkb->lkb_ua)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 233) xid = lkb->lkb_ua->xid;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 234) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 235)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 236) seq_printf(s, "lkb %x %d %x %u %llu %x %x %d %d %d %d %d %d %u %llu %llu\n",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 237) lkb->lkb_id,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 238) lkb->lkb_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 239) lkb->lkb_remid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 240) lkb->lkb_ownpid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 241) (unsigned long long)xid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 242) lkb->lkb_exflags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 243) lkb->lkb_flags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 244) lkb->lkb_status,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 245) lkb->lkb_grmode,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 246) lkb->lkb_rqmode,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 247) lkb->lkb_last_bast.mode,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 248) rsb_lookup,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 249) lkb->lkb_wait_type,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 250) lkb->lkb_lvbseq,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 251) (unsigned long long)ktime_to_ns(lkb->lkb_timestamp),
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 252) (unsigned long long)ktime_to_ns(lkb->lkb_last_bast_time));
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 253) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 254)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 255) static void print_format3(struct dlm_rsb *r, struct seq_file *s)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 256) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 257) struct dlm_lkb *lkb;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 258) int i, lvblen = r->res_ls->ls_lvblen;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 259) int print_name = 1;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 260)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 261) lock_rsb(r);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 262)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 263) seq_printf(s, "rsb %p %d %x %lx %d %d %u %d ",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 264) r,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 265) r->res_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 266) r->res_first_lkid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 267) r->res_flags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 268) !list_empty(&r->res_root_list),
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 269) !list_empty(&r->res_recover_list),
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 270) r->res_recover_locks_count,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 271) r->res_length);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 272) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 273) goto out;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 274)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 275) for (i = 0; i < r->res_length; i++) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 276) if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 277) print_name = 0;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 278) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 279)
f365ef9b79f01 (Joe Perches 2014-09-29 16:08:24 -0700 280) seq_puts(s, print_name ? "str " : "hex");
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 281)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 282) for (i = 0; i < r->res_length; i++) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 283) if (print_name)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 284) seq_printf(s, "%c", r->res_name[i]);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 285) else
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 286) seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 287) }
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 288) seq_putc(s, '\n');
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 289) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 290) goto out;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 291)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 292) if (!r->res_lvbptr)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 293) goto do_locks;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 294)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 295) seq_printf(s, "lvb %u %d", r->res_lvbseq, lvblen);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 296)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 297) for (i = 0; i < lvblen; i++)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 298) seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]);
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 299) seq_putc(s, '\n');
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 300) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 301) goto out;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 302)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 303) do_locks:
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 304) list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 305) print_format3_lock(s, lkb, 0);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 306) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 307) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 308) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 309)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 310) list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 311) print_format3_lock(s, lkb, 0);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 312) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 313) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 314) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 315)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 316) list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 317) print_format3_lock(s, lkb, 0);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 318) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 319) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 320) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 321)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 322) list_for_each_entry(lkb, &r->res_lookup, lkb_rsb_lookup) {
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 323) print_format3_lock(s, lkb, 1);
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 324) if (seq_has_overflowed(s))
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 325) goto out;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 326) }
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 327) out:
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 328) unlock_rsb(r);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 329) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 330)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 331) static void print_format4(struct dlm_rsb *r, struct seq_file *s)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 332) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 333) int our_nodeid = dlm_our_nodeid();
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 334) int print_name = 1;
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 335) int i;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 336)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 337) lock_rsb(r);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 338)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 339) seq_printf(s, "rsb %p %d %d %d %d %lu %lx %d ",
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 340) r,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 341) r->res_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 342) r->res_master_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 343) r->res_dir_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 344) our_nodeid,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 345) r->res_toss_time,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 346) r->res_flags,
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 347) r->res_length);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 348)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 349) for (i = 0; i < r->res_length; i++) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 350) if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 351) print_name = 0;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 352) }
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 353)
f365ef9b79f01 (Joe Perches 2014-09-29 16:08:24 -0700 354) seq_puts(s, print_name ? "str " : "hex");
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 355)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 356) for (i = 0; i < r->res_length; i++) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 357) if (print_name)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 358) seq_printf(s, "%c", r->res_name[i]);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 359) else
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 360) seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 361) }
653996ca8d6f8 (Markus Elfring 2017-05-06 08:12:31 +0200 362) seq_putc(s, '\n');
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 363) unlock_rsb(r);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 364) }
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 365)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 366) struct rsbtbl_iter {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 367) struct dlm_rsb *rsb;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 368) unsigned bucket;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 369) int format;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 370) int header;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 371) };
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 372)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 373) /*
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 374) * If the buffer is full, seq_printf can be called again, but it
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 375) * does nothing. So, the these printing routines periodically check
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 376) * seq_has_overflowed to avoid wasting too much time trying to print to
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 377) * a full buffer.
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 378) */
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 379)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 380) static int table_seq_show(struct seq_file *seq, void *iter_ptr)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 381) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 382) struct rsbtbl_iter *ri = iter_ptr;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 383)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 384) switch (ri->format) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 385) case 1:
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 386) print_format1(ri->rsb, seq);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 387) break;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 388) case 2:
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 389) if (ri->header) {
f365ef9b79f01 (Joe Perches 2014-09-29 16:08:24 -0700 390) seq_puts(seq, "id nodeid remid pid xid exflags flags sts grmode rqmode time_ms r_nodeid r_len r_name\n");
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 391) ri->header = 0;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 392) }
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 393) print_format2(ri->rsb, seq);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 394) break;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 395) case 3:
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 396) if (ri->header) {
f365ef9b79f01 (Joe Perches 2014-09-29 16:08:24 -0700 397) seq_puts(seq, "version rsb 1.1 lvb 1.1 lkb 1.1\n");
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 398) ri->header = 0;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 399) }
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 400) print_format3(ri->rsb, seq);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 401) break;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 402) case 4:
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 403) if (ri->header) {
f365ef9b79f01 (Joe Perches 2014-09-29 16:08:24 -0700 404) seq_puts(seq, "version 4 rsb 2\n");
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 405) ri->header = 0;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 406) }
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 407) print_format4(ri->rsb, seq);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 408) break;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 409) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 410)
d6d906b234afc (Joe Perches 2014-09-29 16:08:23 -0700 411) return 0;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 412) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 413)
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 414) static const struct seq_operations format1_seq_ops;
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 415) static const struct seq_operations format2_seq_ops;
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 416) static const struct seq_operations format3_seq_ops;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 417) static const struct seq_operations format4_seq_ops;
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 418)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 419) static void *table_seq_start(struct seq_file *seq, loff_t *pos)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 420) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 421) struct rb_root *tree;
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 422) struct rb_node *node;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 423) struct dlm_ls *ls = seq->private;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 424) struct rsbtbl_iter *ri;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 425) struct dlm_rsb *r;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 426) loff_t n = *pos;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 427) unsigned bucket, entry;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 428) int toss = (seq->op == &format4_seq_ops);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 429)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 430) bucket = n >> 32;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 431) entry = n & ((1LL << 32) - 1);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 432)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 433) if (bucket >= ls->ls_rsbtbl_size)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 434) return NULL;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 435)
2c257e96df505 (Markus Elfring 2017-05-06 08:34:27 +0200 436) ri = kzalloc(sizeof(*ri), GFP_NOFS);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 437) if (!ri)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 438) return NULL;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 439) if (n == 0)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 440) ri->header = 1;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 441) if (seq->op == &format1_seq_ops)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 442) ri->format = 1;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 443) if (seq->op == &format2_seq_ops)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 444) ri->format = 2;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 445) if (seq->op == &format3_seq_ops)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 446) ri->format = 3;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 447) if (seq->op == &format4_seq_ops)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 448) ri->format = 4;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 449)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 450) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 451)
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 452) spin_lock(&ls->ls_rsbtbl[bucket].lock);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 453) if (!RB_EMPTY_ROOT(tree)) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 454) for (node = rb_first(tree); node; node = rb_next(node)) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 455) r = rb_entry(node, struct dlm_rsb, res_hashnode);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 456) if (!entry--) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 457) dlm_hold_rsb(r);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 458) ri->rsb = r;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 459) ri->bucket = bucket;
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 460) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 461) return ri;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 462) }
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 463) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 464) }
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 465) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 466)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 467) /*
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 468) * move to the first rsb in the next non-empty bucket
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 469) */
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 470)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 471) /* zero the entry */
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 472) n &= ~((1LL << 32) - 1);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 473)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 474) while (1) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 475) bucket++;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 476) n += 1LL << 32;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 477)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 478) if (bucket >= ls->ls_rsbtbl_size) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 479) kfree(ri);
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 480) return NULL;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 481) }
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 482) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 483)
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 484) spin_lock(&ls->ls_rsbtbl[bucket].lock);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 485) if (!RB_EMPTY_ROOT(tree)) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 486) node = rb_first(tree);
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 487) r = rb_entry(node, struct dlm_rsb, res_hashnode);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 488) dlm_hold_rsb(r);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 489) ri->rsb = r;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 490) ri->bucket = bucket;
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 491) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 492) *pos = n;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 493) return ri;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 494) }
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 495) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 496) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 497) }
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 498)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 499) static void *table_seq_next(struct seq_file *seq, void *iter_ptr, loff_t *pos)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 500) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 501) struct dlm_ls *ls = seq->private;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 502) struct rsbtbl_iter *ri = iter_ptr;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 503) struct rb_root *tree;
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 504) struct rb_node *next;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 505) struct dlm_rsb *r, *rp;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 506) loff_t n = *pos;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 507) unsigned bucket;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 508) int toss = (seq->op == &format4_seq_ops);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 509)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 510) bucket = n >> 32;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 511)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 512) /*
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 513) * move to the next rsb in the same bucket
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 514) */
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 515)
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 516) spin_lock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 517) rp = ri->rsb;
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 518) next = rb_next(&rp->res_hashnode);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 519)
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 520) if (next) {
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 521) r = rb_entry(next, struct dlm_rsb, res_hashnode);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 522) dlm_hold_rsb(r);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 523) ri->rsb = r;
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 524) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 525) dlm_put_rsb(rp);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 526) ++*pos;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 527) return ri;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 528) }
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 529) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 530) dlm_put_rsb(rp);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 531)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 532) /*
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 533) * move to the first rsb in the next non-empty bucket
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 534) */
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 535)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 536) /* zero the entry */
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 537) n &= ~((1LL << 32) - 1);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 538)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 539) while (1) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 540) bucket++;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 541) n += 1LL << 32;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 542)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 543) if (bucket >= ls->ls_rsbtbl_size) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 544) kfree(ri);
92c48950b43f4 (Alexander Aring 2021-03-01 17:05:08 -0500 545) ++*pos;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 546) return NULL;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 547) }
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 548) tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 549)
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 550) spin_lock(&ls->ls_rsbtbl[bucket].lock);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 551) if (!RB_EMPTY_ROOT(tree)) {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 552) next = rb_first(tree);
9beb3bf5a92bb (Bob Peterson 2011-10-26 15:24:55 -0500 553) r = rb_entry(next, struct dlm_rsb, res_hashnode);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 554) dlm_hold_rsb(r);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 555) ri->rsb = r;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 556) ri->bucket = bucket;
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 557) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 558) *pos = n;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 559) return ri;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 560) }
c7be761a8163d (David Teigland 2009-01-07 16:50:41 -0600 561) spin_unlock(&ls->ls_rsbtbl[bucket].lock);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 562) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 563) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 564)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 565) static void table_seq_stop(struct seq_file *seq, void *iter_ptr)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 566) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 567) struct rsbtbl_iter *ri = iter_ptr;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 568)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 569) if (ri) {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 570) dlm_put_rsb(ri->rsb);
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 571) kfree(ri);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 572) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 573) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 574)
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 575) static const struct seq_operations format1_seq_ops = {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 576) .start = table_seq_start,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 577) .next = table_seq_next,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 578) .stop = table_seq_stop,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 579) .show = table_seq_show,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 580) };
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 581)
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 582) static const struct seq_operations format2_seq_ops = {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 583) .start = table_seq_start,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 584) .next = table_seq_next,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 585) .stop = table_seq_stop,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 586) .show = table_seq_show,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 587) };
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 588)
88e9d34c72788 (James Morris 2009-09-22 16:43:43 -0700 589) static const struct seq_operations format3_seq_ops = {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 590) .start = table_seq_start,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 591) .next = table_seq_next,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 592) .stop = table_seq_stop,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 593) .show = table_seq_show,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 594) };
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 595)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 596) static const struct seq_operations format4_seq_ops = {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 597) .start = table_seq_start,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 598) .next = table_seq_next,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 599) .stop = table_seq_stop,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 600) .show = table_seq_show,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 601) };
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 602)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 603) static const struct file_operations format1_fops;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 604) static const struct file_operations format2_fops;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 605) static const struct file_operations format3_fops;
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 606) static const struct file_operations format4_fops;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 607)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 608) static int table_open1(struct inode *inode, struct file *file)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 609) {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 610) struct seq_file *seq;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 611) int ret;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 612)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 613) ret = seq_open(file, &format1_seq_ops);
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 614) if (ret)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 615) return ret;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 616)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 617) seq = file->private_data;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 618) seq->private = inode->i_private; /* the dlm_ls */
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 619) return 0;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 620) }
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 621)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 622) static int table_open2(struct inode *inode, struct file *file)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 623) {
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 624) struct seq_file *seq;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 625) int ret;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 626)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 627) ret = seq_open(file, &format2_seq_ops);
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 628) if (ret)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 629) return ret;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 630)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 631) seq = file->private_data;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 632) seq->private = inode->i_private; /* the dlm_ls */
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 633) return 0;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 634) }
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 635)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 636) static int table_open3(struct inode *inode, struct file *file)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 637) {
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 638) struct seq_file *seq;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 639) int ret;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 640)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 641) ret = seq_open(file, &format3_seq_ops);
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 642) if (ret)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 643) return ret;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 644)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 645) seq = file->private_data;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 646) seq->private = inode->i_private; /* the dlm_ls */
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 647) return 0;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 648) }
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 649)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 650) static int table_open4(struct inode *inode, struct file *file)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 651) {
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 652) struct seq_file *seq;
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 653) int ret;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 654)
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 655) ret = seq_open(file, &format4_seq_ops);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 656) if (ret)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 657) return ret;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 658)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 659) seq = file->private_data;
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 660) seq->private = inode->i_private; /* the dlm_ls */
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 661) return 0;
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 662) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 663)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 664) static const struct file_operations format1_fops = {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 665) .owner = THIS_MODULE,
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 666) .open = table_open1,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 667) .read = seq_read,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 668) .llseek = seq_lseek,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 669) .release = seq_release
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 670) };
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 671)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 672) static const struct file_operations format2_fops = {
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 673) .owner = THIS_MODULE,
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 674) .open = table_open2,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 675) .read = seq_read,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 676) .llseek = seq_lseek,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 677) .release = seq_release
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 678) };
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 679)
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 680) static const struct file_operations format3_fops = {
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 681) .owner = THIS_MODULE,
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 682) .open = table_open3,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 683) .read = seq_read,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 684) .llseek = seq_lseek,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 685) .release = seq_release
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 686) };
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 687)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 688) static const struct file_operations format4_fops = {
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 689) .owner = THIS_MODULE,
079d37df3397d (Eric Ren 2016-08-25 17:20:59 +0800 690) .open = table_open4,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 691) .read = seq_read,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 692) .llseek = seq_lseek,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 693) .release = seq_release
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 694) };
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 695)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 696) /*
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 697) * dump lkb's on the ls_waiters list
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 698) */
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 699) static ssize_t waiters_read(struct file *file, char __user *userbuf,
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 700) size_t count, loff_t *ppos)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 701) {
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 702) struct dlm_ls *ls = file->private_data;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 703) struct dlm_lkb *lkb;
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 704) size_t len = DLM_DEBUG_BUF_LEN, pos = 0, ret, rv;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 705)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 706) mutex_lock(&debug_buf_lock);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 707) mutex_lock(&ls->ls_waiters_mutex);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 708) memset(debug_buf, 0, sizeof(debug_buf));
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 709)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 710) list_for_each_entry(lkb, &ls->ls_waiters, lkb_wait_reply) {
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 711) ret = snprintf(debug_buf + pos, len - pos, "%x %d %d %s\n",
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 712) lkb->lkb_id, lkb->lkb_wait_type,
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 713) lkb->lkb_nodeid, lkb->lkb_resource->res_name);
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 714) if (ret >= len - pos)
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 715) break;
06442440bc442 (David Teigland 2006-08-08 11:31:30 -0500 716) pos += ret;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 717) }
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 718) mutex_unlock(&ls->ls_waiters_mutex);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 719)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 720) rv = simple_read_from_buffer(userbuf, count, ppos, debug_buf, pos);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 721) mutex_unlock(&debug_buf_lock);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 722) return rv;
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 723) }
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 724)
00977a59b9512 (Arjan van de Ven 2007-02-12 00:55:34 -0800 725) static const struct file_operations waiters_fops = {
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 726) .owner = THIS_MODULE,
234e340582901 (Stephen Boyd 2012-04-05 14:25:11 -0700 727) .open = simple_open,
6038f373a3dc1 (Arnd Bergmann 2010-08-15 18:52:59 +0200 728) .read = waiters_read,
6038f373a3dc1 (Arnd Bergmann 2010-08-15 18:52:59 +0200 729) .llseek = default_llseek,
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 730) };
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 731)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 732) void dlm_delete_debug_file(struct dlm_ls *ls)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 733) {
e0d9bf4cc0888 (Fabian Frederick 2014-08-08 14:23:37 -0700 734) debugfs_remove(ls->ls_debug_rsb_dentry);
e0d9bf4cc0888 (Fabian Frederick 2014-08-08 14:23:37 -0700 735) debugfs_remove(ls->ls_debug_waiters_dentry);
e0d9bf4cc0888 (Fabian Frederick 2014-08-08 14:23:37 -0700 736) debugfs_remove(ls->ls_debug_locks_dentry);
e0d9bf4cc0888 (Fabian Frederick 2014-08-08 14:23:37 -0700 737) debugfs_remove(ls->ls_debug_all_dentry);
e0d9bf4cc0888 (Fabian Frederick 2014-08-08 14:23:37 -0700 738) debugfs_remove(ls->ls_debug_toss_dentry);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 739) }
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 740)
a48f9721e6db7 (Greg Kroah-Hartman 2019-06-12 17:25:36 +0200 741) void dlm_create_debug_file(struct dlm_ls *ls)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 742) {
41922ce8318f6 (Markus Elfring 2017-05-06 08:22:35 +0200 743) char name[DLM_LOCKSPACE_LEN + 8];
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 744)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 745) /* format 1 */
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 746)
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 747) ls->ls_debug_rsb_dentry = debugfs_create_file(ls->ls_name,
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 748) S_IFREG | S_IRUGO,
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 749) dlm_root,
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 750) ls,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 751) &format1_fops);
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 752)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 753) /* format 2 */
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 754)
9dd592d70be0d (David Teigland 2007-05-29 08:47:04 -0500 755) memset(name, 0, sizeof(name));
41922ce8318f6 (Markus Elfring 2017-05-06 08:22:35 +0200 756) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_locks", ls->ls_name);
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 757)
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 758) ls->ls_debug_locks_dentry = debugfs_create_file(name,
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 759) S_IFREG | S_IRUGO,
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 760) dlm_root,
ac90a25525009 (David Teigland 2007-07-06 09:47:08 -0500 761) ls,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 762) &format2_fops);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 763)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 764) /* format 3 */
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 765)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 766) memset(name, 0, sizeof(name));
41922ce8318f6 (Markus Elfring 2017-05-06 08:22:35 +0200 767) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_all", ls->ls_name);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 768)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 769) ls->ls_debug_all_dentry = debugfs_create_file(name,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 770) S_IFREG | S_IRUGO,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 771) dlm_root,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 772) ls,
892c4467e335e (David Teigland 2009-01-07 16:48:52 -0600 773) &format3_fops);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 774)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 775) /* format 4 */
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 776)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 777) memset(name, 0, sizeof(name));
41922ce8318f6 (Markus Elfring 2017-05-06 08:22:35 +0200 778) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_toss", ls->ls_name);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 779)
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 780) ls->ls_debug_toss_dentry = debugfs_create_file(name,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 781) S_IFREG | S_IRUGO,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 782) dlm_root,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 783) ls,
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 784) &format4_fops);
c04fecb4d9f77 (David Teigland 2012-05-10 10:18:07 -0500 785)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 786) memset(name, 0, sizeof(name));
41922ce8318f6 (Markus Elfring 2017-05-06 08:22:35 +0200 787) snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_waiters", ls->ls_name);
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 788)
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 789) ls->ls_debug_waiters_dentry = debugfs_create_file(name,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 790) S_IFREG | S_IRUGO,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 791) dlm_root,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 792) ls,
d022509d1c54b (David Teigland 2008-12-16 14:53:23 -0600 793) &waiters_fops);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 794) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 795)
a48f9721e6db7 (Greg Kroah-Hartman 2019-06-12 17:25:36 +0200 796) void __init dlm_register_debugfs(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 797) {
5de6319b18393 (David Teigland 2006-07-25 13:44:31 -0500 798) mutex_init(&debug_buf_lock);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 799) dlm_root = debugfs_create_dir("dlm", NULL);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 800) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 801)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 802) void dlm_unregister_debugfs(void)
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 803) {
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 804) debugfs_remove(dlm_root);
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 805) }
e7fd41792fc0e (David Teigland 2006-01-18 09:30:29 +0000 806)
VisionFive2 Linux kernel
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