On Wed, Sep 05, 2012 at 01:53:44AM +0000, Liu, Chuansheng wrote: > 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 For a kms drm driver (and tbh, doing a non-kms driver today is not a great idea), there's no reason to use the drm_irq_install/_unistall helpers. So if you driver has special needs wrt irq handling that don't neatly fit what the drm_irq stuff provides, simply don't use it - all the generic code that's there is just to keep non-kms userspace going. Yours, Daniel -- Daniel Vetter Mail: daniel@xxxxxxxx Mobile: +41 (0)79 365 57 48 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel