From 62082ab3e63f6f474655da98b710e453b4124ed1 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Wed, 13 Jun 2007 15:38:59 +0200 Subject: Make sure we read fence->signaled while spinlocked. --- linux-core/drm_fence.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) (limited to 'linux-core/drm_fence.c') diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c index ce161dc3..70baad9f 100644 --- a/linux-core/drm_fence.c +++ b/linux-core/drm_fence.c @@ -164,7 +164,7 @@ static void drm_fence_object_destroy(drm_file_t * priv, drm_fence_usage_deref_locked(dev, fence); } -static int fence_signaled(drm_device_t * dev, +int drm_fence_object_signaled(drm_device_t * dev, drm_fence_object_t * fence, uint32_t mask, int poke_flush) { @@ -200,12 +200,6 @@ static void drm_fence_flush_exe(drm_fence_class_manager_t * fc, } } -int drm_fence_object_signaled(drm_fence_object_t * fence, - uint32_t type) -{ - return ((fence->signaled & type) == type); -} - int drm_fence_object_flush(drm_device_t * dev, drm_fence_object_t * fence, uint32_t type) @@ -298,13 +292,13 @@ static int drm_fence_lazy_wait(drm_device_t *dev, do { DRM_WAIT_ON(ret, fc->fence_queue, 3 * DRM_HZ, - (signaled = fence_signaled(dev, fence, mask, 1))); + (signaled = drm_fence_object_signaled(dev, fence, mask, 1))); if (signaled) return 0; if (time_after_eq(jiffies, _end)) break; } while (ret == -EINTR && ignore_signals); - if (fence_signaled(dev, fence, mask, 0)) + if (drm_fence_object_signaled(dev, fence, mask, 0)) return 0; if (time_after_eq(jiffies, _end)) ret = -EBUSY; @@ -334,7 +328,7 @@ int drm_fence_object_wait(drm_device_t * dev, return -EINVAL; } - if (fence_signaled(dev, fence, mask, 0)) + if (drm_fence_object_signaled(dev, fence, mask, 0)) return 0; _end = jiffies + 3 * DRM_HZ; @@ -365,7 +359,7 @@ int drm_fence_object_wait(drm_device_t * dev, return ret; } } - if (drm_fence_object_signaled(fence, mask)) + if (drm_fence_object_signaled(dev, fence, mask, 0)) return 0; /* @@ -377,7 +371,7 @@ int drm_fence_object_wait(drm_device_t * dev, #endif do { schedule(); - signaled = fence_signaled(dev, fence, mask, 1); + signaled = drm_fence_object_signaled(dev, fence, mask, 1); } while (!signaled && !time_after_eq(jiffies, _end)); if (!signaled) -- cgit v1.2.3