linux-kernel - Re: [STABLE 5.15][PATCH] thermal: devfreq_cooling: Fix perf state when calculate dfc res

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Date: Fri, 5 Apr 2024 11:33:20 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Lukasz Luba <lukasz.luba@....com>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	ye.zhang@...k-chips.com, d-gole@...com, rafael@...nel.org,
	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [STABLE 5.15][PATCH] thermal: devfreq_cooling: Fix perf state
 when calculate dfc res_util

On Thu, Apr 04, 2024 at 11:13:29AM +0100, Lukasz Luba wrote:
> From: Ye Zhang <ye.zhang@...k-chips.com>
> 
> The issue occurs when the devfreq cooling device uses the EM power model
> and the get_real_power() callback is provided by the driver.
> 
> The EM power table is sorted ascending，can't index the table by cooling
> device state，so convert cooling state to performance state by
> dfc->max_state - dfc->capped_state.
> 
> Fixes: 615510fe13bd ("thermal: devfreq_cooling: remove old power model and use EM")
> Cc: 5.11+ <stable@...r.kernel.org> # 5.11+
> Signed-off-by: Ye Zhang <ye.zhang@...k-chips.com>
> Reviewed-by: Dhruva Gole <d-gole@...com>
> Reviewed-by: Lukasz Luba <lukasz.luba@....com>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Signed-off-by: Lukasz Luba <lukasz.luba@....com>
> ---
> 
> Hi Greg,
> 
> I have solved small backporting conflict to that v5.15.
> The patch is based on tag v5.15.99 and it's for this
> failing backport:
> https://lore.kernel.org/stable/2024033050-imitation-unmixed-ef53@gregkh/

Thanks, next time all that I need is the git id of this in Linus's tree,
no need to point to a previous FAILED email.

now queued up.

greg k-h