From 955a4b8979fb558e8897f5b358ac77d2d423821d Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Wed, 17 May 2017 13:10:07 +0100
Subject: [PATCH] drm/i915: Don't force serialisation on marking up execlists irq posted
Git-commit: 955a4b8979fb558e8897f5b358ac77d2d423821d
Patch-mainline: v4.13-rc1
References: FATE#322643 bsc#1055900
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@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170517121007.27224-12-chris@chris-wilson.co.uk
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/i915/i915_irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1324,7 +1324,7 @@ gen8_cs_irq_handler(struct intel_engine_
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;
}
}