linux-kernel - Re: [PATCH] bluetooth: optimize barrier usage for Rmw atomics

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Message-Id: <3824A860-1ACD-479C-A862-E1449D49BC05@holtmann.org>
Date:   Wed, 29 Jan 2020 20:03:38 +0100
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     Johan Hedberg <johan.hedberg@...il.com>,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH] bluetooth: optimize barrier usage for Rmw atomics

Hi Davidlohr,

> Use smp_mb__before_atomic() instead of smp_mb() and avoid the
> unnecessary barrier for non LL/SC architectures, such as x86.
> 
> Signed-off-by: Davidlohr Bueso <dbueso@...e.de>
> ---
> net/bluetooth/hidp/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel