linux-kernel - Re: [PATCH 3/3] lockdep: Remove unnecessary acquisitions wrt workqueue flush

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Message-ID: <20170905072551.fvtxrhuo662jiwif@hirez.programming.kicks-ass.net>
Date:   Tue, 5 Sep 2017 09:25:51 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Byungchul Park <byungchul.park@....com>
Cc:     tj@...nel.org, johannes.berg@...el.com, mingo@...nel.org,
        tglx@...utronix.de, oleg@...hat.com, david@...morbit.com,
        linux-kernel@...r.kernel.org, kernel-team@....com
Subject: Re: [PATCH 3/3] lockdep: Remove unnecessary acquisitions wrt
 workqueue flush

On Tue, Sep 05, 2017 at 11:29:14AM +0900, Byungchul Park wrote:

> Also, lock_map_acquire() in process_one_work() is too strong for
> that purpose. lock_map_acquire_might() is enough. Replaced it.

NAK!! traditional annotations are superior to cross-release. They are
not timing dependent.