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909a694e
cloud-kernel
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909a694e
编写于
7月 08, 2009
作者:
D
Dave Jones
浏览文件
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浏览文件
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电子邮件补丁
差异文件
[CPUFREQ] Factor out interface creation from cpufreq_add_dev
Signed-off-by:
N
Dave Jones
<
davej@redhat.com
>
上级
19d6f7ec
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
52 addition
and
37 deletion
+52
-37
drivers/cpufreq/cpufreq.c
drivers/cpufreq/cpufreq.c
+52
-37
未找到文件。
drivers/cpufreq/cpufreq.c
浏览文件 @
909a694e
...
...
@@ -784,6 +784,57 @@ int cpufreq_add_dev_symlink(unsigned int cpu, struct cpufreq_policy *policy)
return
ret
;
}
int
cpufreq_add_dev_interface
(
unsigned
int
cpu
,
struct
cpufreq_policy
*
policy
,
struct
sys_device
*
sys_dev
)
{
struct
freq_attr
**
drv_attr
;
unsigned
long
flags
;
int
ret
=
0
;
unsigned
int
j
;
/* prepare interface data */
ret
=
kobject_init_and_add
(
&
policy
->
kobj
,
&
ktype_cpufreq
,
&
sys_dev
->
kobj
,
"cpufreq"
);
if
(
ret
)
return
ret
;
/* set up files for this cpu device */
drv_attr
=
cpufreq_driver
->
attr
;
while
((
drv_attr
)
&&
(
*
drv_attr
))
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
((
*
drv_attr
)
->
attr
));
if
(
ret
)
goto
err_out_kobj_put
;
drv_attr
++
;
}
if
(
cpufreq_driver
->
get
)
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
cpuinfo_cur_freq
.
attr
);
if
(
ret
)
goto
err_out_kobj_put
;
}
if
(
cpufreq_driver
->
target
)
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
scaling_cur_freq
.
attr
);
if
(
ret
)
goto
err_out_kobj_put
;
}
spin_lock_irqsave
(
&
cpufreq_driver_lock
,
flags
);
for_each_cpu
(
j
,
policy
->
cpus
)
{
if
(
!
cpu_online
(
j
))
continue
;
per_cpu
(
cpufreq_cpu_data
,
j
)
=
policy
;
per_cpu
(
policy_cpu
,
j
)
=
policy
->
cpu
;
}
spin_unlock_irqrestore
(
&
cpufreq_driver_lock
,
flags
);
ret
=
cpufreq_add_dev_symlink
(
cpu
,
policy
);
return
ret
;
err_out_kobj_put:
kobject_put
(
&
policy
->
kobj
);
wait_for_completion
(
&
policy
->
kobj_unregister
);
return
ret
;
}
/**
* cpufreq_add_dev - add a CPU device
...
...
@@ -800,7 +851,6 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
int
ret
=
0
;
struct
cpufreq_policy
new_policy
;
struct
cpufreq_policy
*
policy
;
struct
freq_attr
**
drv_attr
;
unsigned
long
flags
;
unsigned
int
j
;
...
...
@@ -923,41 +973,7 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
#endif
memcpy
(
&
new_policy
,
policy
,
sizeof
(
struct
cpufreq_policy
));
/* prepare interface data */
ret
=
kobject_init_and_add
(
&
policy
->
kobj
,
&
ktype_cpufreq
,
&
sys_dev
->
kobj
,
"cpufreq"
);
if
(
ret
)
goto
out_driver_exit
;
/* set up files for this cpu device */
drv_attr
=
cpufreq_driver
->
attr
;
while
((
drv_attr
)
&&
(
*
drv_attr
))
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
((
*
drv_attr
)
->
attr
));
if
(
ret
)
goto
err_out_kobj_put
;
drv_attr
++
;
}
if
(
cpufreq_driver
->
get
)
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
cpuinfo_cur_freq
.
attr
);
if
(
ret
)
goto
err_out_kobj_put
;
}
if
(
cpufreq_driver
->
target
)
{
ret
=
sysfs_create_file
(
&
policy
->
kobj
,
&
scaling_cur_freq
.
attr
);
if
(
ret
)
goto
err_out_kobj_put
;
}
spin_lock_irqsave
(
&
cpufreq_driver_lock
,
flags
);
for_each_cpu
(
j
,
policy
->
cpus
)
{
if
(
!
cpu_online
(
j
))
continue
;
per_cpu
(
cpufreq_cpu_data
,
j
)
=
policy
;
per_cpu
(
policy_cpu
,
j
)
=
policy
->
cpu
;
}
spin_unlock_irqrestore
(
&
cpufreq_driver_lock
,
flags
);
ret
=
cpufreq_add_dev_symlink
(
cpu
,
policy
->
cpus
,
policy
);
ret
=
cpufreq_add_dev_interface
(
cpu
,
policy
,
sys_dev
);
if
(
ret
)
goto
err_out_unregister
;
...
...
@@ -990,7 +1006,6 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
per_cpu
(
cpufreq_cpu_data
,
j
)
=
NULL
;
spin_unlock_irqrestore
(
&
cpufreq_driver_lock
,
flags
);
err_out_kobj_put:
kobject_put
(
&
policy
->
kobj
);
wait_for_completion
(
&
policy
->
kobj_unregister
);
...
...
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