AcoSail/kernel_optimize_test
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Revert "cpufreq: suspend governors on system suspend/hibernate"

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Commit 5a87182aa2 (cpufreq: suspend governors on system
suspend/hibernate) causes hibernation problems to happen on
Bjørn Mork's and Paul Bolle's systems, so revert it.

Fixes: 5a87182aa2 (cpufreq: suspend governors on system suspend/hibernate)
Reported-by: Bjørn Mork <bjorn@mork.no>
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2013-12-08 01:04:17 +01:00
parent 374b105797
commit 12205a4b79
3 changed files with 0 additions and 54 deletions
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3
drivers/base/power/main.c
View File

@ -29,7 +29,6 @@
#include <linux/async.h>
#include <linux/suspend.h>
#include <trace/events/power.h>
#include <linux/cpufreq.h>
#include <linux/cpuidle.h>
#include <linux/timer.h>
@ -541,7 +540,6 @@ static void dpm_resume_noirq(pm_message_t state)
dpm_show_time(starttime, state, "noirq");
resume_device_irqs();
cpuidle_resume();
cpufreq_resume();
}
/**
@ -957,7 +955,6 @@ static int dpm_suspend_noirq(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
cpufreq_suspend();
cpuidle_pause();
suspend_device_irqs();
mutex_lock(&dpm_list_mtx);

43
drivers/cpufreq/cpufreq.c
View File

@ -26,7 +26,6 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/suspend.h>
#include <linux/syscore_ops.h>
#include <linux/tick.h>
#include <trace/events/power.h>
@ -48,9 +47,6 @@ static LIST_HEAD(cpufreq_policy_list);
static DEFINE_PER_CPU(char[CPUFREQ_NAME_LEN], cpufreq_cpu_governor);
#endif
/* Flag to suspend/resume CPUFreq governors */
static bool cpufreq_suspended;
static inline bool has_target(void)
{
return cpufreq_driver->target_index || cpufreq_driver->target;
@ -1466,41 +1462,6 @@ static struct subsys_interface cpufreq_interface = {
.remove_dev = cpufreq_remove_dev,
};
void cpufreq_suspend(void)
{
struct cpufreq_policy *policy;
if (!has_target())
return;
pr_debug("%s: Suspending Governors\n", __func__);
list_for_each_entry(policy, &cpufreq_policy_list, policy_list)
if (__cpufreq_governor(policy, CPUFREQ_GOV_STOP))
pr_err("%s: Failed to stop governor for policy: %p\n",
__func__, policy);
cpufreq_suspended = true;
}
void cpufreq_resume(void)
{
struct cpufreq_policy *policy;
if (!has_target())
return;
pr_debug("%s: Resuming Governors\n", __func__);
cpufreq_suspended = false;
list_for_each_entry(policy, &cpufreq_policy_list, policy_list)
if (__cpufreq_governor(policy, CPUFREQ_GOV_START)
|| __cpufreq_governor(policy, CPUFREQ_GOV_LIMITS))
pr_err("%s: Failed to start governor for policy: %p\n",
__func__, policy);
}
/**
* cpufreq_bp_suspend - Prepare the boot CPU for system suspend.
*
@ -1803,10 +1764,6 @@ static int __cpufreq_governor(struct cpufreq_policy *policy,
struct cpufreq_governor *gov = NULL;
#endif
/* Don't start any governor operations if we are entering suspend */
if (cpufreq_suspended)
return 0;
if (policy->governor->max_transition_latency &&
policy->cpuinfo.transition_latency >
policy->governor->max_transition_latency) {

8
include/linux/cpufreq.h
View File

@ -280,14 +280,6 @@ cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
policy->cpuinfo.max_freq);
}
#ifdef CONFIG_CPU_FREQ
void cpufreq_suspend(void);
void cpufreq_resume(void);
#else
static inline void cpufreq_suspend(void) {}
static inline void cpufreq_resume(void) {}
#endif
/*********************************************************************
* CPUFREQ NOTIFIER INTERFACE *
*********************************************************************/