linux-kernel - Re: [PATCH v7 0/8] Raid: enable talitos xor offload for improving performance

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Date:	Wed, 29 Aug 2012 07:52:55 -0700
From:	Dan Williams <djbw@...com>
To:	Liu Qiang-B32616 <B32616@...escale.com>
CC:	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"Ira W. Snyder" <iws@...o.caltech.edu>
Subject: Re: [PATCH v7 0/8] Raid: enable talitos xor offload for improving
 performance

On Wed, 2012-08-29 at 11:15 +0000, Liu Qiang-B32616 wrote:
> Hi Dan,
> 
> Ping?
> Can you apply these patches? Thanks.
> 

I'm working my way through them.

The first thing I notice is that xor_chan->desc_lock is taken
inconsistently.  I.e. spin_lock_irqsave() in talitos_process_pending()
and spin_lock_bh() everywhere else.  Have you run these patches with
lockdep?

--
Dan


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