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Merge "qcom-cpufreq: Remove save/restore of scheduling policy"

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bait_dispatcher_monitor_system 2015-02-20 09:04:21 -08:00 committed by Gerrit - the friendly Code Review server
parent 4693588a52 a712693fd3
commit f470377fc4
1 changed files with 2 additions and 23 deletions
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25
drivers/cpufreq/qcom-cpufreq.c
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@ -1,9 +1,9 @@
/* arch/arm/mach-msm/cpufreq.c
/* drivers/cpufreq/qcom-cpufreq.c
*
* MSM architecture cpufreq driver
*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2007-2014, The Linux Foundation. All rights reserved.
* Copyright (c) 2007-2015, The Linux Foundation. All rights reserved.
* Author: Mike A. Chan <mikechan@google.com>
*
* This software is licensed under the terms of the GNU General Public
@ -22,8 +22,6 @@
#include <linux/cpufreq.h>
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/sched.h>
#include <linux/sched/rt.h>
#include <linux/suspend.h>
#include <linux/clk.h>
#include <linux/err.h>
@ -49,27 +47,13 @@ static int set_cpu_freq(struct cpufreq_policy *policy, unsigned int new_freq,
unsigned int index)
{
int ret = 0;
int saved_sched_policy = -EINVAL;
int saved_sched_rt_prio = -EINVAL;
struct cpufreq_freqs freqs;
struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
unsigned long rate;
freqs.old = policy->cur;
freqs.new = new_freq;
freqs.cpu = policy->cpu;
/*
* Put the caller into SCHED_FIFO priority to avoid cpu starvation
* while increasing frequencies
*/
if (freqs.new > freqs.old && current->policy != SCHED_FIFO) {
saved_sched_policy = current->policy;
saved_sched_rt_prio = current->rt_priority;
sched_setscheduler_nocheck(current, SCHED_FIFO, &param);
}
cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE);
trace_cpu_frequency_switch_start(freqs.old, freqs.new, policy->cpu);
@ -82,11 +66,6 @@ static int set_cpu_freq(struct cpufreq_policy *policy, unsigned int new_freq,
trace_cpu_frequency_switch_end(policy->cpu);
}
/* Restore priority after clock ramp-up */
if (freqs.new > freqs.old && saved_sched_policy >= 0) {
param.sched_priority = saved_sched_rt_prio;
sched_setscheduler_nocheck(current, saved_sched_policy, &param);
}
return ret;
}