linux-kernel - [Patch 0/1]drm_irq: Introducing the irq

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Message-ID: <27240C0AC20F114CBF8149A2696CBE4A177306@SHSMSX101.ccr.corp.intel.com>
Date:	Wed, 5 Sep 2012 01:53:44 +0000
From:	"Liu, Chuansheng" <chuansheng.liu@...el.com>
To:	"'linux-kernel@...r.kernel.org' (linux-kernel@...r.kernel.org)" 
	<linux-kernel@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
CC:	"airlied@...hat.com" <airlied@...hat.com>,
	"alexander.deucher@....com" <alexander.deucher@....com>,
	"Shi, Yang A" <yang.a.shi@...el.com>,
	"Liu, Chuansheng" <chuansheng.liu@...el.com>
Subject: [Patch 0/1]drm_irq: Introducing the irq_thread support

This patch is for introducing the irq thread support in drm_irq.

Why we need irq thread in drm_irq code?
In our GPU system, the gpu interrupt handler need some time even > 1ms to finish,
in that case, the whole system will stay in irq disable status. One case is:
when audio is playing, it sometimes effects the audio quality.

So we have to introduce the irq thread in drm_irq, it can help us move some heavy work into irq thread
and other irq interrupts can be handled in time. Also the IRQF_ONESHOT is helpful for irq thread.

Include one patch:
[PATCH 01/1] drm_irq-Introducing-the-irq_thread-support
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