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Subject: Re: [PATCH] bluetooth: optimize barrier usage for Rmw atomics
From:   Marcel Holtmann <marcel@holtmann.org>
In-Reply-To: <20200129181041.24853-1-dave@stgolabs.net>
Date:   Wed, 29 Jan 2020 20:03:38 +0100
Cc:     Johan Hedberg <johan.hedberg@gmail.com>,
        linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org,
        Davidlohr Bueso <dbueso@suse.de>
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References: <20200129181041.24853-1-dave@stgolabs.net>
To:     Davidlohr Bueso <dave@stgolabs.net>
Sender: linux-bluetooth-owner@vger.kernel.org
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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@suse.de>
> ---
> net/bluetooth/hidp/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel