Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4;
Sender: Ingo Molnar <mingo.kernel.org@gmail.com>
Date:   Wed, 4 Oct 2023 11:31:26 +0200
From:   Ingo Molnar <mingo@kernel.org>
To:     Zhang Qiao <zhangqiao22@huawei.com>
Cc:     mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
        rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
        bristot@redhat.com, vschneid@redhat.com,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sched: Update comment of try_invoke_on_locked_down_task()
Message-ID: <ZR0w7vtVhiOVI4uD@gmail.com>
References: <20230731085759.11443-1-zhangqiao22@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230731085759.11443-1-zhangqiao22@huawei.com>
Precedence: bulk


* Zhang Qiao <zhangqiao22@huawei.com> wrote:

> Since commit 9b3c4ab3045e ("sched,rcu: Rework
> try_invoke_on_locked_down_task()") renamed
> try_invoke_on_locked_down_task() to task_call_func().
> Now, update some comment about it.
> 
> Signed-off-by: Zhang Qiao <zhangqiao22@huawei.com>
> ---
>  kernel/sched/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 0d18c3969f90..540ac33ddb80 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -4186,7 +4186,7 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags)
>  	 * Pairs with the LOCK+smp_mb__after_spinlock() on rq->lock in
>  	 * __schedule().  See the comment for smp_mb__after_spinlock().
>  	 *
> -	 * A similar smb_rmb() lives in try_invoke_on_locked_down_task().
> +	 * A similar smb_rmb() lives in task_call_func().

Except the matching smp_rmb() doesn't live in task_call_func() anymore, so 
you now turned a stale comment into a misleading one ...

And how about fixing the obvious 'smb/smp' typo as well?

Thanks,

	Ingo