linux-kernel - Re: [PATCHv4 3/8] gpu: host1x: Add channel support

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Date:	Wed, 2 Jan 2013 11:43:51 +0200
From:	Terje Bergström <tbergstrom@...dia.com>
To:	Mark Zhang <nvmarkzhang@...il.com>
CC:	"thierry.reding@...onic-design.de" <thierry.reding@...onic-design.de>,
	"airlied@...ux.ie" <airlied@...ux.ie>,
	"dev@...xeye.de" <dev@...xeye.de>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv4 3/8] gpu: host1x: Add channel support

On 02.01.2013 11:31, Mark Zhang wrote:
> On 01/02/2013 05:31 PM, Terje Bergström wrote:
>> That's intentional. Writing a job to channel is atomic, so lock is taken
>> from host1x_cdma_begin() until host1x_cdma_end().
>>
> 
> Okay. So can we consider that lock and unlock this mutex in the function
> which calls host1x_cdma_begin and host1x_cdma_end, that means, in
> current implementation, function "channel_submit"?

Yes, exactly.

Terje

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