Re: [PATCH v3 1/2] thermal: core: Allow orderly_poweroff to be called only once

[Keerthy <j-keerthy@ti.com>]

On Monday 08 May 2017 02:32 AM, Pavel Machek wrote:
>> thermal_zone_device_check --> thermal_zone_device_update -->
>> handle_thermal_trip --> handle_critical_trips --> orderly_poweroff
>>
>> The above sequence happens every 250/500 mS based on the configuration.
>> The orderly_poweroff function is getting called every 250/500 mS.
>> With a full fledged file system it takes at least 5-10 Seconds to
>> power off gracefully.
>>
>> In that period due to the thermal_zone_device_check triggering
>> periodically the thermal work queues bombard with
>> orderly_poweroff calls multiple times eventually leading to
>> failures in gracefully powering off the system.
>>
>> Make sure that orderly_poweroff is called only once.
> 
> Pretty please, can we do it in the core code, not in thermal/? There
> are other reasons kernel may want to shut the system down, like for
> example critical battery, and if both thermal _and_ bad battery
> happen, we want just one shutdown...

Pavel,

Thermal fix is still valid. As it is having multiple calls.
I can work on fixing the core code as well.

BTW the latest of this series is v6:

https://patchwork.kernel.org/patch/9684929/


- Keerthy

> 
>> Reported-by: Keerthy <j-keerthy@ti.com>
>> Signed-off-by: Keerthy <j-keerthy@ti.com>
> 
> And here probably we need your full name.
> 
> Thanks,
> 								Pavel
>