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1bceb8d1
编写于
1月 18, 2009
作者:
D
Dave Jones
浏览文件
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差异文件
[CPUFREQ] checkpatch cleanups for userspace governor
Signed-off-by:
N
Dave Jones
<
davej@redhat.com
>
上级
0a829c5a
变更
1
隐藏空白更改
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并排
Showing
1 changed file
with
14 addition
and
13 deletion
+14
-13
drivers/cpufreq/cpufreq_userspace.c
drivers/cpufreq/cpufreq_userspace.c
+14
-13
未找到文件。
drivers/cpufreq/cpufreq_userspace.c
浏览文件 @
1bceb8d1
...
...
@@ -24,9 +24,6 @@
#include <linux/sysfs.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
/**
* A few values needed by the userspace governor
*/
...
...
@@ -37,7 +34,7 @@ static DEFINE_PER_CPU(unsigned int, cpu_set_freq); /* CPU freq desired by
userspace */
static
DEFINE_PER_CPU
(
unsigned
int
,
cpu_is_managed
);
static
DEFINE_MUTEX
(
userspace_mutex
);
static
DEFINE_MUTEX
(
userspace_mutex
);
static
int
cpus_using_userspace_governor
;
#define dprintk(msg...) \
...
...
@@ -46,9 +43,9 @@ static int cpus_using_userspace_governor;
/* keep track of frequency transitions */
static
int
userspace_cpufreq_notifier
(
struct
notifier_block
*
nb
,
unsigned
long
val
,
void
*
data
)
void
*
data
)
{
struct
cpufreq_freqs
*
freq
=
data
;
struct
cpufreq_freqs
*
freq
=
data
;
if
(
!
per_cpu
(
cpu_is_managed
,
freq
->
cpu
))
return
0
;
...
...
@@ -57,11 +54,11 @@ userspace_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
freq
->
cpu
,
freq
->
new
);
per_cpu
(
cpu_cur_freq
,
freq
->
cpu
)
=
freq
->
new
;
return
0
;
return
0
;
}
static
struct
notifier_block
userspace_cpufreq_notifier_block
=
{
.
notifier_call
=
userspace_cpufreq_notifier
.
notifier_call
=
userspace_cpufreq_notifier
};
...
...
@@ -93,8 +90,11 @@ static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
* We're safe from concurrent calls to ->target() here
* as we hold the userspace_mutex lock. If we were calling
* cpufreq_driver_target, a deadlock situation might occur:
* A: cpufreq_set (lock userspace_mutex) -> cpufreq_driver_target(lock policy->lock)
* B: cpufreq_set_policy(lock policy->lock) -> __cpufreq_governor -> cpufreq_governor_userspace (lock userspace_mutex)
* A: cpufreq_set (lock userspace_mutex) ->
* cpufreq_driver_target(lock policy->lock)
* B: cpufreq_set_policy(lock policy->lock) ->
* __cpufreq_governor ->
* cpufreq_governor_userspace (lock userspace_mutex)
*/
ret
=
__cpufreq_driver_target
(
policy
,
freq
,
CPUFREQ_RELATION_L
);
...
...
@@ -210,9 +210,10 @@ static void __exit cpufreq_gov_userspace_exit(void)
}
MODULE_AUTHOR
(
"Dominik Brodowski <linux@brodo.de>, Russell King <rmk@arm.linux.org.uk>"
);
MODULE_DESCRIPTION
(
"CPUfreq policy governor 'userspace'"
);
MODULE_LICENSE
(
"GPL"
);
MODULE_AUTHOR
(
"Dominik Brodowski <linux@brodo.de>, "
"Russell King <rmk@arm.linux.org.uk>"
);
MODULE_DESCRIPTION
(
"CPUfreq policy governor 'userspace'"
);
MODULE_LICENSE
(
"GPL"
);
#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE
fs_initcall
(
cpufreq_gov_userspace_init
);
...
...
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