[Intel-gfx] [PATCH 9/9] drm/i915: Don't force serialisation on marking up execlists irq posted

[Tvrtko Ursulin]

On 03/05/2017 12:37, Chris Wilson wrote:
> Since we coordinate with the execlists tasklet using a locked schedule
> operation that ensures that after we set the engine->irq_posted we
> always have an invocation of the tasklet, we do not need to use a locked
> operation to set the engine->irq_posted itself.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
>  drivers/gpu/drm/i915/i915_irq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 8f60c8045b3e..951a7705949e 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -1360,7 +1360,7 @@ gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir, int test_shift)
>
>  	if (iir & (GT_CONTEXT_SWITCH_INTERRUPT << test_shift)) {
>  		if (port_count(&engine->execlist_port[0])) {
> -			set_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
> +			__set_bit(ENGINE_IRQ_EXECLIST, &engine->irq_posted);
>  			tasklet = true;
>  		}
>  	}
>

True :)

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Regards,

Tvrtko