From: Peter Zijlstra <peterz@infradead.org>
To: Suren Baghdasaryan <surenb@google.com>
Cc: hannes@cmpxchg.org, mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
bristot@redhat.com, matthias.bgg@gmail.com, minchan@google.com,
timmurray@google.com, yt.chang@mediatek.com,
wenju.xu@mediatek.com, jonathan.jmchen@mediatek.com,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, kernel-team@android.com,
SH Chen <show-hong.chen@mediatek.com>
Subject: Re: [PATCH v2 1/1] psi: stop relying on timer_pending for poll_work rescheduling
Date: Thu, 1 Jul 2021 10:58:24 +0200 [thread overview]
Message-ID: <YN2DsLlE+WtxK6K9@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20210630205151.137001-1-surenb@google.com>
On Wed, Jun 30, 2021 at 01:51:51PM -0700, Suren Baghdasaryan wrote:
> + /* cmpxchg should be called even when !force to set poll_scheduled */
> + if (atomic_cmpxchg(&group->poll_scheduled, 0, 1) && !force)
> return;
Why is that a cmpxchg() ?
next prev parent reply other threads:[~2021-07-01 9:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 20:51 [PATCH v2 1/1] psi: stop relying on timer_pending for poll_work rescheduling Suren Baghdasaryan
2021-06-30 22:04 ` Johannes Weiner
2021-07-01 8:58 ` Peter Zijlstra [this message]
2021-07-01 16:09 ` Suren Baghdasaryan
2021-07-01 16:12 ` Peter Zijlstra
2021-07-01 16:28 ` Suren Baghdasaryan
2021-07-02 9:28 ` Peter Zijlstra
2021-07-02 15:49 ` Suren Baghdasaryan
2021-07-07 2:42 ` Suren Baghdasaryan
2021-07-01 16:39 ` Johannes Weiner
2021-07-01 17:46 ` Suren Baghdasaryan
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