RE: [uclinux-dist-devel] [PATCH] mutex:SMP:bf561:Run smp memorybarrier after take atomic lock in mutex_fastpath APIs.

[Zhang, Sonic]

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@xxxxxxxxxxxxxxxxxxxx
>[mailto:uclinux-dist-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On
>Behalf Of Mike Frysinger
>Sent: Wednesday, October 26, 2011 3:54 PM
>To: Sonic Zhang
>Cc: uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx; 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
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>Uclinux-dist-devel mailing list
>Uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx
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>
>

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