[PATCH] timer: Add __sched to msleep() and msleep_interruptible()

[PATCH] timer: Add __sched to msleep() and msleep_interruptible()

[Yoshihiro YUNOMAE]

Add __sched to msleep() and msleep_interruptible() for avoiding to show
these functions in WCHAN. If a driver calls msleep() or msleep_interruptible()
in a lot of places, users cannot understand that the driver might sleep which
functions execute msleep() or msleep_interruptible(). So, by applying this
patch, users can confirm the function calling msleep() or msleep_interruptible()
from WCHAN.

Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
---
 kernel/timer.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/timer.c b/kernel/timer.c
index 6582b82..cc1470f 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1660,7 +1660,7 @@ void __init init_timers(void)
  * msleep - sleep safely even with waitqueue interruptions
  * @msecs: Time in milliseconds to sleep for
  */
-void msleep(unsigned int msecs)
+void __sched msleep(unsigned int msecs)
 {
 	unsigned long timeout = msecs_to_jiffies(msecs) + 1;
 
@@ -1674,7 +1674,7 @@ EXPORT_SYMBOL(msleep);
  * msleep_interruptible - sleep waiting for signals
  * @msecs: Time in milliseconds to sleep for
  */
-unsigned long msleep_interruptible(unsigned int msecs)
+unsigned long __sched msleep_interruptible(unsigned int msecs)
 {
 	unsigned long timeout = msecs_to_jiffies(msecs) + 1;
 

Re: [PATCH] timer: Add __sched to msleep() and msleep_interruptible()

[Yoshihiro YUNOMAE]

Hi,

Would you review this patch?

Thanks,
Yoshihiro YUNOMAE

(2013/11/11 17:18), Yoshihiro YUNOMAE wrote:
> Add __sched to msleep() and msleep_interruptible() for avoiding to show
> these functions in WCHAN. If a driver calls msleep() or msleep_interruptible()
> in a lot of places, users cannot understand that the driver might sleep which
> functions execute msleep() or msleep_interruptible(). So, by applying this
> patch, users can confirm the function calling msleep() or msleep_interruptible()
> from WCHAN.
>
> Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: linux-kernel@vger.kernel.org
> ---
>   kernel/timer.c |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/timer.c b/kernel/timer.c
> index 6582b82..cc1470f 100644
> --- a/kernel/timer.c
> +++ b/kernel/timer.c
> @@ -1660,7 +1660,7 @@ void __init init_timers(void)
>    * msleep - sleep safely even with waitqueue interruptions
>    * @msecs: Time in milliseconds to sleep for
>    */
> -void msleep(unsigned int msecs)
> +void __sched msleep(unsigned int msecs)
>   {
>   	unsigned long timeout = msecs_to_jiffies(msecs) + 1;
>
> @@ -1674,7 +1674,7 @@ EXPORT_SYMBOL(msleep);
>    * msleep_interruptible - sleep waiting for signals
>    * @msecs: Time in milliseconds to sleep for
>    */
> -unsigned long msleep_interruptible(unsigned int msecs)
> +unsigned long __sched msleep_interruptible(unsigned int msecs)
>   {
>   	unsigned long timeout = msecs_to_jiffies(msecs) + 1;
>
>
> --
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-- 
Yoshihiro YUNOMAE
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: yoshihiro.yunomae.ez@hitachi.com