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Message-ID: <DB904C5425BA6F4E8424B3B51A1414D16D3BA94A82@NWD2CMBX1.ad.analog.com>
Date:	Wed, 26 Oct 2011 04:53:00 -0400
From:	"Zhang, Sonic" <Sonic.Zhang@...log.com>
To:	Mike Frysinger <vapier@...too.org>,
	Sonic Zhang <sonic.adi@...il.com>
CC:	"uclinux-dist-devel@...ckfin.uclinux.org" 
	<uclinux-dist-devel@...ckfin.uclinux.org>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: RE: [uclinux-dist-devel] [PATCH] mutex:SMP:bf561:Run smp memory
 barrier after take atomic lock in mutex_fastpath APIs.

Hi Mike,

Our SMP atomic implementation doesn't include memory barrier. Is it a better way to add barrier there?


Thanks

Sonic

>-----Original Message-----
>From: uclinux-dist-devel-bounces@...ckfin.uclinux.org
>[mailto:uclinux-dist-devel-bounces@...ckfin.uclinux.org] On
>Behalf Of Mike Frysinger
>Sent: Wednesday, October 26, 2011 3:54 PM
>To: Sonic Zhang
>Cc: uclinux-dist-devel@...ckfin.uclinux.org; Ingo Molnar; LKML
>Subject: Re: [uclinux-dist-devel] [PATCH] mutex:SMP:bf561:Run
>smp memory barrier after take atomic lock in mutex_fastpath APIs.
>
>unfortunately, this is incorrect.  please see the thread:
>https://lkml.org/lkml/2011/5/29/233
>-mike
>_______________________________________________
>Uclinux-dist-devel mailing list
>Uclinux-dist-devel@...ckfin.uclinux.org
>https://blackfin.uclinux.org/mailman/listinfo/uclinux-dist-devel
>
>

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