linux-kernel - Re: [PATCH] [Watchdog][Trivial] Added comments to explain watchdog

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Date:	Wed, 13 Feb 2013 12:47:12 +0530
From:	anish singh <anish198519851985@...il.com>
To:	akpm@...ux-foundation.org, dzickus@...hat.com, tglx@...utronix.de,
	mingo@...nel.org, chuansheng.liu@...el.com,
	linux-kernel@...r.kernel.org
Cc:	anish kumar <anish198519851985@...il.com>
Subject: Re: [PATCH] [Watchdog][Trivial] Added comments to explain
 watchdog_disabled variable

Is the below patch picked up?

On Sun, Feb 3, 2013 at 9:31 PM, anish kumar <anish198519851985@...il.com> wrote:
> From: anish kumar <anish198519851985@...il.com>
>
> This watchdog_disabled flag is bit of cryptic.Howerver it's usefullnes is multifold.
> Uses are:
> 1. Check if smpboot_register_percpu_thread function passed.
> 2. Makes sure that user enables and disables the watchdog in sequence
>    i.e. enable watchdog->disable watchdog->enable watchdog
>    Unlike enable watchdog->enable watchdog which is wrong.
>
> Signed-off-by: anish kumar <anish198519851985@...il.com>
> ---
>  kernel/watchdog.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/watchdog.c b/kernel/watchdog.c
> index 75a2ab3..87a19aa 100644
> --- a/kernel/watchdog.c
> +++ b/kernel/watchdog.c
> @@ -518,6 +518,11 @@ int proc_dowatchdog(struct ctl_table *table, int write,
>                 return ret;
>
>         set_sample_period();
> +       /*
> +        * We shouldn't enable watchdog threads if it is
> +        * disabled.This is done by watchdog_disabled
> +        * variable check in watchdog_*_all_cpus function.
> +        */
>         if (watchdog_enabled && watchdog_thresh)
>                 watchdog_enable_all_cpus();
>         else
> --
> 1.7.1
>
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