evie/android_kernel_oneplus_msm8998
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pmqos: Enable cpu isolation awareness

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Set long latency requirement for isolated cores to ensure LPM logic will
select a deep sleep state.

Change-Id: I83e9fbb800df259616a145d311b50627dc42a5ff
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
This commit is contained in:
Olav Haugan 2016-05-29 19:50:47 -07:00
parent 287b1a8c1c
commit bc24c063ef
2 changed files with 13 additions and 3 deletions
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9
drivers/cpuidle/cpuidle.c
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@ -625,12 +625,15 @@ static void smp_callback(void *v)
static int cpuidle_latency_notify(struct notifier_block *b, static int cpuidle_latency_notify(struct notifier_block *b,
unsigned long l, void *v) unsigned long l, void *v)
{ {
const struct cpumask *cpus; struct cpumask cpus;
cpus = v ?: cpu_online_mask; if (v)
cpumask_andnot(&cpus, v, cpu_isolated_mask);
else
cpumask_andnot(&cpus, cpu_online_mask, cpu_isolated_mask);
preempt_disable(); preempt_disable();
smp_call_function_many(cpus, smp_callback, NULL, 1); smp_call_function_many(&cpus, smp_callback, NULL, 1);
preempt_enable(); preempt_enable();
return NOTIFY_OK; return NOTIFY_OK;

7
kernel/power/qos.c
View file

@ -45,6 +45,7 @@
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/irqdesc.h> #include <linux/irqdesc.h>
#include <linux/cpumask.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <linux/export.h> #include <linux/export.h>
@ -447,6 +448,9 @@ EXPORT_SYMBOL_GPL(pm_qos_request);
int pm_qos_request_for_cpu(int pm_qos_class, int cpu) int pm_qos_request_for_cpu(int pm_qos_class, int cpu)
{ {
if (cpu_isolated(cpu))
return INT_MAX;
return pm_qos_array[pm_qos_class]->constraints->target_per_cpu[cpu]; return pm_qos_array[pm_qos_class]->constraints->target_per_cpu[cpu];
} }
EXPORT_SYMBOL(pm_qos_request_for_cpu); EXPORT_SYMBOL(pm_qos_request_for_cpu);
@ -469,6 +473,9 @@ int pm_qos_request_for_cpumask(int pm_qos_class, struct cpumask *mask)
val = c->default_value; val = c->default_value;
for_each_cpu(cpu, mask) { for_each_cpu(cpu, mask) {
if (cpu_isolated(cpu))
continue;
switch (c->type) { switch (c->type) {
case PM_QOS_MIN: case PM_QOS_MIN:
if (c->target_per_cpu[cpu] < val) if (c->target_per_cpu[cpu] < val)