author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2019-10-10 23:32:59 +0200
committer: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2019-10-14 10:40:33 +0200
commit: 4f690bb8ce4cc5d3fabe3a8e9c2401de1554cdc1
parent: 069ce2ef1a6dd84cbd4d897b333e30f825e021f0
Commit Summary:
Diffstat:
1 file changed, 9 insertions, 10 deletions
diff --git a/drivers/cpuidle/governors/teo.c b/drivers/cpuidle/governors/teo.c
index 8806db95a913..de3139b17a50 100644
--- a/drivers/cpuidle/governors/teo.c
+++ b/drivers/cpuidle/governors/teo.c
@@ -233,7 +233,7 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
{
struct teo_cpu *cpu_data = per_cpu_ptr(&teo_cpus, dev->cpu);
int latency_req = cpuidle_governor_latency_req(dev->cpu);
- unsigned int duration_us, count;
+ unsigned int duration_us, early_hits;
int max_early_idx, constraint_idx, idx, i;
ktime_t delta_tick;
@@ -247,7 +247,7 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
cpu_data->sleep_length_ns = tick_nohz_get_sleep_length(&delta_tick);
duration_us = ktime_to_us(cpu_data->sleep_length_ns);
- count = 0;
+ early_hits = 0;
max_early_idx = -1;
constraint_idx = drv->state_count;
idx = -1;
@@ -270,12 +270,12 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
* into account, because it would be a mistake to select
* a deeper state with lower "early hits" metric. The
* index cannot be changed to point to it, however, so
- * just increase the max count alone and let the index
- * still point to a shallower idle state.
+ * just increase the "early hits" count alone and let
+ * the index still point to a shallower idle state.
*/
if (max_early_idx >= 0 &&
- count < cpu_data->states[i].early_hits)
- count = cpu_data->states[i].early_hits;
+ early_hits < cpu_data->states[i].early_hits)
+ early_hits = cpu_data->states[i].early_hits;
continue;
}
@@ -291,10 +291,10 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
idx = i;
- if (count < cpu_data->states[i].early_hits &&
+ if (early_hits < cpu_data->states[i].early_hits &&
!(tick_nohz_tick_stopped() &&
drv->states[i].target_residency < TICK_USEC)) {
- count = cpu_data->states[i].early_hits;
+ early_hits = cpu_data->states[i].early_hits;
max_early_idx = i;
}
}
@@ -323,10 +323,9 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
if (idx < 0) {
idx = 0; /* No states enabled. Must use 0. */
} else if (idx > 0) {
+ unsigned int count = 0;
u64 sum = 0;
- count = 0;
-
/*
* Count and sum the most recent idle duration values less than
* the current expected idle duration value.