gt; Cc: vinod.k...@intel.com; linuxppc-dev@lists.ozlabs.org; linux-
> ker...@vger.kernel.org; Ira W. Snyder; Li Yang-R58472
> Subject: RE: [PATCH] fsldma: fix performance degradation by optimizing
> spinlock use.
>
> Hi Dan Williams,
>
> Do you have any comment about this patch?
>
...@vger.kernel.org
Subject: Re: [PATCH] fsldma: fix performance degradation by optimizing spinlock
use.
On Wed, Jan 11, 2012 at 07:54:55AM +, Shi Xuelin-B29237 wrote:
> Hello Iris,
>
> As we discussed in the previous patch, I add one smp_mb() in fsl_tx_status.
> In my testing with
...@vger.kernel.org
> Cc: Shi Xuelin-B29237
> Subject: [PATCH] fsldma: fix performance degradation by optimizing spinlock
> use.
>
> From: Forrest shi
>
> dma status check function fsl_tx_status is heavily called in
> a tight loop and the desc lock in fsl_tx_status co
Xuelin-B29237
Sent: 2011年12月26日 14:01
To: i...@ovro.caltech.edu; vinod.k...@intel.com; dan.j.willi...@intel.com;
linuxppc-dev@lists.ozlabs.org; linux-ker...@vger.kernel.org
Cc: Shi Xuelin-B29237
Subject: [PATCH] fsldma: fix performance degradation by optimizing spinlock use.
From: Forrest shi
From: Forrest shi
dma status check function fsl_tx_status is heavily called in
a tight loop and the desc lock in fsl_tx_status contended by
the dma status update function. this caused the dma performance
degrades much.
this patch releases the lock in the fsl_tx_status functio
