linux-kernel - Re: [PATCH v5 1/1] sched/uclamp: add SCHED_FLAG_UTIL_CLAMP

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Message-ID: <131cb7b5-e400-11e1-8fc1-b6e8183f1a8d@arm.com>
Date:   Fri, 13 Nov 2020 12:45:29 +0100
From:   Dietmar Eggemann <dietmar.eggemann@....com>
To:     Qais Yousef <qais.yousef@....com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Yun Hsiang <hsiang023167@...il.com>,
        linux-kernel@...r.kernel.org, patrick.bellasi@...bug.net,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v5 1/1] sched/uclamp: add SCHED_FLAG_UTIL_CLAMP_RESET flag
 to reset uclamp

On 12/11/2020 17:01, Dietmar Eggemann wrote:
> On 12/11/2020 15:41, Qais Yousef wrote:
>> On 11/11/20 18:41, Dietmar Eggemann wrote:
>>> On 10/11/2020 13:21, Peter Zijlstra wrote:
>>>> On Tue, Nov 03, 2020 at 10:37:56AM +0800, Yun Hsiang wrote:

[...]

>> If you or Yun would still like to send the patch to protect
>> SCHED_FLAG_UTIL_CLAMP and SCHED_FLAG_ALL with __kernel__ that'd be great.
> 
> Ah yes! Can add an extra patch for this when sending out the next version.

On second thought, why should we risk a change in UAPI? Since we're now
not introducing a new flag the meaning of SCHED_FLAG_ALL or
SCHED_FLAG_UTIL_CLAMP won't change.