[CPUFREQ] Convert drivers/cpufreq semaphores to mutexes.
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index e69fd8d..9ee9411 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -27,6 +27,7 @@
#include <linux/jiffies.h>
#include <linux/kernel_stat.h>
#include <linux/percpu.h>
+#include <linux/mutex.h>
/*
* dbs is used in this file as a shortform for demandbased switching
@@ -70,7 +71,7 @@
static unsigned int dbs_enable; /* number of CPUs using this policy */
-static DECLARE_MUTEX (dbs_sem);
+static DEFINE_MUTEX (dbs_mutex);
static DECLARE_WORK (dbs_work, do_dbs_timer, NULL);
struct dbs_tuners {
@@ -136,9 +137,9 @@
if (input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
return -EINVAL;
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
dbs_tuners_ins.sampling_down_factor = input;
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return count;
}
@@ -150,14 +151,14 @@
int ret;
ret = sscanf (buf, "%u", &input);
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
if (ret != 1 || input > MAX_SAMPLING_RATE || input < MIN_SAMPLING_RATE) {
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return -EINVAL;
}
dbs_tuners_ins.sampling_rate = input;
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return count;
}
@@ -169,15 +170,15 @@
int ret;
ret = sscanf (buf, "%u", &input);
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD ||
input < MIN_FREQUENCY_UP_THRESHOLD) {
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return -EINVAL;
}
dbs_tuners_ins.up_threshold = input;
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return count;
}
@@ -197,9 +198,9 @@
if ( input > 1 )
input = 1;
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
if ( input == dbs_tuners_ins.ignore_nice ) { /* nothing to do */
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return count;
}
dbs_tuners_ins.ignore_nice = input;
@@ -211,7 +212,7 @@
j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up;
}
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
return count;
}
@@ -356,12 +357,12 @@
static void do_dbs_timer(void *data)
{
int i;
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
for_each_online_cpu(i)
dbs_check_cpu(i);
schedule_delayed_work(&dbs_work,
usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
}
static inline void dbs_timer_init(void)
@@ -399,7 +400,7 @@
if (this_dbs_info->enable) /* Already enabled */
break;
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
for_each_cpu_mask(j, policy->cpus) {
struct cpu_dbs_info_s *j_dbs_info;
j_dbs_info = &per_cpu(cpu_dbs_info, j);
@@ -435,11 +436,11 @@
dbs_timer_init();
}
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
break;
case CPUFREQ_GOV_STOP:
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
this_dbs_info->enable = 0;
sysfs_remove_group(&policy->kobj, &dbs_attr_group);
dbs_enable--;
@@ -450,12 +451,12 @@
if (dbs_enable == 0)
dbs_timer_exit();
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
break;
case CPUFREQ_GOV_LIMITS:
- down(&dbs_sem);
+ mutex_lock(&dbs_mutex);
if (policy->max < this_dbs_info->cur_policy->cur)
__cpufreq_driver_target(
this_dbs_info->cur_policy,
@@ -464,7 +465,7 @@
__cpufreq_driver_target(
this_dbs_info->cur_policy,
policy->min, CPUFREQ_RELATION_L);
- up(&dbs_sem);
+ mutex_unlock(&dbs_mutex);
break;
}
return 0;