linux-kernel - Re: [PATCH V9 1/2] watchdog: mtk: support pre-timeout when the bark irq is available

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Message-ID: <ac2a3762-0b5d-a406-33e0-fca3073cd5ac@roeck-us.net>
Date:   Wed, 5 May 2021 19:10:21 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     王擎 <wangqing@...o.com>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V9 1/2] watchdog: mtk: support pre-timeout when the bark
 irq is available

On 5/5/21 6:51 PM, 王擎 wrote:
> 
>> On 4/24/21 6:52 PM, Wang Qing wrote:
>>> Use the bark interrupt as the pretimeout notifier if available.
>>>
>>> When the watchdog timer expires in dual mode, an interrupt will be
>>> triggered first, then the timing restarts. The reset signal will be
>>> initiated when the timer expires again.
>>>
>>> The pretimeout notification shall occur at timeout-sec/2.
>>>
>>> V2:
>>> - panic() by default if WATCHDOG_PRETIMEOUT_GOV is not enabled.
>>>
>>> V3:
>>> - Modify the pretimeout behavior, manually reset after the pretimeout
>>> - is processed and wait until timeout.
>>>
>>> V4:
>>> - Remove pretimeout related processing. 
>>> - Add dual mode control separately.
>>>
>>> V5:
>>> - Fix some formatting and printing problems.
>>>
>>> V6:
>>> - Realize pretimeout processing through dualmode.
>>>
>>> V7:
>>> - Add set_pretimeout().
>>>
>>> V8/V9:
>>> - Fix some formatting problems.
>>>
>>> Signed-off-by: Wang Qing <wangqing@...o.com>
>>
>> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>>
>> Note that the version history should be after "---".
>>
>> Guenter
>>
> 
> Thanks, Guenter.
> And what do I need to do if I want merge into the next-tree?
> 
Wim should take care of that.

Guenter