linux-kernel - Re: [PATCH] arm, arm64: Fix selection of CONFIG_SCHED_THERMAL

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Date:   Thu, 30 Jul 2020 11:23:49 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Valentin Schneider <valentin.schneider@....com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org, Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Quentin Perret <qperret@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Amit Daniel Kachhap <amit.kachhap@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Russell King <linux@...linux.org.uk>,
        Thara Gopinath <thara.gopinath@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Qian Cai <cai@....pw>, Sudeep Holla <sudeep.holla@....com>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH] arm, arm64: Fix selection of
 CONFIG_SCHED_THERMAL_PRESSURE

On Wed, Jul 29, 2020 at 02:57:18PM +0100, Valentin Schneider wrote:
> Qian reported that the current setup forgoes the Kconfig dependencies and
> results in warnings such as:
> 
>   WARNING: unmet direct dependencies detected for SCHED_THERMAL_PRESSURE
>     Depends on [n]: SMP [=y] && CPU_FREQ_THERMAL [=n]
>     Selected by [y]:
>     - ARM64 [=y]
> 
> Revert commit
> 
>   e17ae7fea871 ("arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE")
> 
> and re-implement it by making the option default to 'y' for arm64 and arm,
> which respects Kconfig dependencies (i.e. will remain 'n' if
> CPU_FREQ_THERMAL=n).
> 
> Fixes: e17ae7fea871 ("arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE")
> Reported-by: Qian Cai <cai@....pw>
> Signed-off-by: Valentin Schneider <valentin.schneider@....com>
> ---
>  arch/arm/Kconfig   | 1 -
>  arch/arm64/Kconfig | 1 -
>  init/Kconfig       | 2 ++
>  3 files changed, 2 insertions(+), 2 deletions(-)

Acked-by: Catalin Marinas <catalin.marinas@....com>