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thermal: core: add a comment describing the main update loop

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Simply marking the main update loop section and adding a
comment describing it.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Eduardo Valentin 2016-11-07 21:09:15 -08:00 committed by Zhang Rui
parent 106339ab7e
commit 8772e185f1
1 changed files with 11 additions and 0 deletions
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11
drivers/thermal/thermal_core.c
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@ -286,6 +286,17 @@ static void thermal_unregister_governors(void)
thermal_gov_power_allocator_unregister();
}
/*
* Zone update section: main control loop applied to each zone while monitoring
*
* in polling mode. The monitoring is done using a workqueue.
* Same update may be done on a zone by calling thermal_zone_device_update().
*
* An update means:
* - Non-critical trips will invoke the governor responsible for that zone;
* - Hot trips will produce a notification to userspace;
* - Critical trip point will cause a system shutdown.
*/
static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
int delay)
{