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From: Ilya Yanok <yanok@emcraft.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"'Vladimir K'" <vlad@emcraft.com>, Wolfgang Denk <wd@denx.de>
Subject: Re: [RFC] CONFIG_NET_DMA  can hang the system if DMA engine driver uses tasklets
Date: Fri, 08 Oct 2010 03:49:01 +0400	[thread overview]
Message-ID: <4CAE5C6D.6000808@emcraft.com> (raw)
In-Reply-To: <4CAE58B5.1030901@intel.com>

Hi Dan,

08.10.2010 3:33, Dan Williams wrote:
>> 3. Try to free the descriptors not only from tasklet but also from the
>> place they get requested.
>
> This is what ioatdma and iop-adma do i.e. process descriptor reclaim
> from the allocation failure path. For example in ioat2_check_space_lock():

Thanks for the quick answer! I'll fix the mpc512x_dma driver then.

Regards, Ilya.

      reply	other threads:[~2010-10-07 23:49 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-07 23:14 [RFC] CONFIG_NET_DMA can hang the system if DMA engine driver uses tasklets Ilya Yanok
2010-10-07 23:33 ` Dan Williams
2010-10-07 23:49   ` Ilya Yanok [this message]

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