[Intel-gfx] [PATCH 5/7] drm/i915: Don't need a timer to wake us up

Chris Wilson chris at chris-wilson.co.uk
Mon Jan 11 06:33:54 PST 2016

On Mon, Jan 11, 2016 at 02:08:39PM +0000, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> We can avoid open-coding the schedule wake-up since
>    commit 9cff8adeaa34b5d2802f03f89803da57856b3b72
>    Author: NeilBrown <neilb at suse.de>
>    Date:   Fri Feb 13 15:49:17 2015 +1100
>        sched: Prevent recursion in io_schedule()
> exported the io_schedule_timeout function which we can now use
> to simplify the code in __i915_wait_request.
> v2: New commit message. (Daniel Vetter)
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

I don't like this because the timer concept still turns out to be useful
when we separate the timer from the bottom-half. And so we have a patch
to remove it and then we add it back again because it serves a purpose.

Chris Wilson, Intel Open Source Technology Centre

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