linux-kernel - Re: [PATCH v2 1/4] thermal: power_allocator: relax the requirement of a sustainable

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Date:	Wed, 12 Aug 2015 19:05:17 +0800
From:	Daniel Kurtz <djkurtz@...omium.org>
To:	Javi Merino <javi.merino@....com>
Cc:	linux-pm@...r.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Chung-yih Wang <cywang@...omium.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Punit Agrawal <punit.agrawal@....com>,
	Zhang Rui <rui.zhang@...el.com>,
	Eduardo Valentin <edubezval@...il.com>
Subject: Re: [PATCH v2 1/4] thermal: power_allocator: relax the requirement of
 a sustainable_power in tzp

Hi Javi,

One Tiny nit below...

On Tue, Aug 11, 2015 at 6:21 PM, Javi Merino <javi.merino@....com> wrote:
> The power allocator governor currently requires that a sustainable power
> is passed as part of the thermal zone's thermal zone parameters.  If
> that parameter is not provided, it doesn't register with the thermal
> zone.
>
> While this parameter is strongly recommended for optimal performance, it
> doesn't need to be mandatory.  Relax the requirement and allow the
> governor to bind to thermal zones that don't provide it by estimating it
> from the cooling devices' power model.
>
> Cc: Zhang Rui <rui.zhang@...el.com>
> Cc: Eduardo Valentin <edubezval@...il.com>
> Signed-off-by: Javi Merino <javi.merino@....com>
> ---

[snip]

> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -997,6 +997,34 @@ int power_actor_get_max_power(struct thermal_cooling_device *cdev,
>  }
>
>  /**
> + * power_actor_get_min_power() - get the mainimum power that a cdev can consume
> + * @cdev:      pointer to &thermal_cooling_device
> + * @tz:                a valid thermal zone device pointer
> + * @min_power: pointer in which to store the minimum power
> + *
> + * Calculate the minimum power consumption in milliwats that the
                                                 ^
                                                 milliwatts

Thanks,
-Dan
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