Re: [Intel-gfx] [PATCH 07/10] drm/i915: Reduce spinlock hold time during notify_ring() interrupt

Quoting Tvrtko Ursulin (2018-01-17 10:45:16) > > On 15/01/2018 21:24, Chris Wilson wrote: > > - if (wakeup) > > - wake_up_process(wait->tsk); > > + tsk = wait->tsk; > > + } else { > > + if

Re: [Intel-gfx] [PATCH 07/10] drm/i915: Reduce spinlock hold time during notify_ring() interrupt

Quoting Tvrtko Ursulin (2018-01-17 10:45:16) > > On 15/01/2018 21:24, Chris Wilson wrote: > > By taking advantage of the RCU protection of the task struct, we can find > > the appropriate signaler under the spinlock and then release the spinlock > > before waking the task and signaling the fence.

Re: [Intel-gfx] [PATCH 07/10] drm/i915: Reduce spinlock hold time during notify_ring() interrupt

On 15/01/2018 21:24, Chris Wilson wrote: By taking advantage of the RCU protection of the task struct, we can find the appropriate signaler under the spinlock and then release the spinlock before waking the task and signaling the fence. Signed-off-by: Chris Wilson

[Intel-gfx] [PATCH 07/10] drm/i915: Reduce spinlock hold time during notify_ring() interrupt

By taking advantage of the RCU protection of the task struct, we can find the appropriate signaler under the spinlock and then release the spinlock before waking the task and signaling the fence. Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_irq.c | 29