From 48bc2a4a427ad81578f887d71d45794619a77211 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 25 Nov 2016 13:17:17 +0000 Subject: drm/i915: Hold a reference on the request for its fence chain Currently, we have an active reference for the request until it is retired. Though it cannot be retired before it has been executed by hardware, the request may be completed before we have finished processing the execute fence, i.e. we may continue to process that fence as we free the request. Fixes: 5590af3e115a ("drm/i915: Drive request submission through fence callbacks") Fixes: 23902e49c999 ("drm/i915: Split request submit/execute phase into two") Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20161125131718.20978-3-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_sw_fence.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/gpu/drm/i915/i915_sw_fence.h') diff --git a/drivers/gpu/drm/i915/i915_sw_fence.h b/drivers/gpu/drm/i915/i915_sw_fence.h index 7508d23f823b..0f3185ef7f4e 100644 --- a/drivers/gpu/drm/i915/i915_sw_fence.h +++ b/drivers/gpu/drm/i915/i915_sw_fence.h @@ -75,6 +75,11 @@ int i915_sw_fence_await_reservation(struct i915_sw_fence *fence, unsigned long timeout, gfp_t gfp); +static inline bool i915_sw_fence_signaled(const struct i915_sw_fence *fence) +{ + return atomic_read(&fence->pending) <= 0; +} + static inline bool i915_sw_fence_done(const struct i915_sw_fence *fence) { return atomic_read(&fence->pending) < 0; -- cgit v1.2.3