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cpuidle: lpm-levels: Store per core next hrtimer wakeup

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Currently next wakeup is stored per lpm_cpu domain which
have only last cpu's next wakeup. This overrides early
wakeups of previous cpus in the same domain.

Fix this by using per cpu next hrtimer.

Change-Id: Ic99e82cbb2a1b4eb6fa578b40045fab2bb22a557
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>
This commit is contained in:
Raghavendra Kakarla 2020-10-18 00:51:47 +05:30
commit 0479c6b6d7
2 changed files with 5 additions and 5 deletions
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9
drivers/cpuidle/lpm-levels.c
View file

@ -101,6 +101,7 @@ struct ipi_history {
ktime_t cpu_idle_resched_ts;
};
static DEFINE_PER_CPU(ktime_t, next_hrtimer);
static DEFINE_PER_CPU(struct lpm_history, hist);
static DEFINE_PER_CPU(struct ipi_history, cpu_ipi_history);
static DEFINE_PER_CPU(struct lpm_cpu*, cpu_lpm);
@ -264,7 +265,7 @@ static uint32_t get_next_event(struct lpm_cpu *cpu)
return 0;
for_each_cpu(next_cpu, &cpu_lpm_mask) {
ktime_t next_event_c = per_cpu(cpu_lpm, next_cpu)->next_hrtimer;
ktime_t next_event_c = per_cpu(next_hrtimer, next_cpu);
if (next_event > next_event_c)
next_event = next_event_c;
@ -775,7 +776,7 @@ static unsigned int get_next_online_cpu(bool from_idle)
return next_cpu;
next_event = KTIME_MAX;
for_each_online_cpu(cpu) {
ktime_t next_event_c = per_cpu(cpu_lpm, cpu)->next_hrtimer;
ktime_t next_event_c = per_cpu(next_hrtimer, cpu);
if (next_event_c < next_event) {
next_event = next_event_c;
@ -802,7 +803,7 @@ static uint64_t get_cluster_sleep_time(struct lpm_cluster *cluster,
&cluster->num_children_in_sync, cpu_online_mask);
for_each_cpu(cpu, &online_cpus_in_cluster) {
ktime_t next_event_c = per_cpu(cpu_lpm, cpu)->next_hrtimer;
ktime_t next_event_c = per_cpu(next_hrtimer, cpu);
if (next_event_c < next_event)
next_event = next_event_c;
@ -1448,7 +1449,7 @@ static int lpm_cpuidle_enter(struct cpuidle_device *dev,
int ret = -EBUSY;
/* Read the timer from the CPU that is entering idle */
cpu->next_hrtimer = tick_nohz_get_next_hrtimer();
per_cpu(next_hrtimer, dev->cpu) = tick_nohz_get_next_hrtimer();
cpu_prepare(cpu, idx, true);
cluster_prepare(cpu->parent, cpumask, idx, true, start_time);

1
drivers/cpuidle/lpm-levels.h
View file

@ -69,7 +69,6 @@ struct lpm_cpu {
uint64_t bias;
struct cpuidle_driver *drv;
struct lpm_cluster *parent;
ktime_t next_hrtimer;
};
struct lpm_level_avail {