linux-kernel - Re: [PATCH v2] sched: Make const-safe

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Message-ID: <Y5mTJVi2PBix+Gy6@hirez.programming.kicks-ass.net>
Date:   Wed, 14 Dec 2022 10:11:01 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] sched: Make const-safe

On Mon, Dec 12, 2022 at 02:49:46PM +0000, Matthew Wilcox (Oracle) wrote:
> With a modified container_of() that preserves constness, the compiler
> finds some pointers which should have been marked as const.  task_of()
> also needs to become const-preserving for the !FAIR_GROUP_SCHED case so
> that cfs_rq_of() can take a const argument.  No change to generated code.

More const more better I suppose.. Thanks!

Happen to have a sha for the container_of() commit handy?