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| author | Jerome Glisse <jglisse@redhat.com> | 2012-05-09 17:34:47 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-05-09 20:22:19 +0400 |
| commit | 3b7a2b24ea2b703b3af595d0d4ee233ab0b36377 (patch) | |
| tree | 0f8ccea66571d7ffa556dd55cf8717e429ed59cf /drivers/gpu/drm/radeon/radeon.h | |
| parent | bb635567291482a87e4cc46e6683419c1f365ddf (diff) | |
| download | linux-3b7a2b24ea2b703b3af595d0d4ee233ab0b36377.tar.xz | |
drm/radeon: rework fence handling, drop fence list v7
Using 64bits fence sequence we can directly compare sequence
number to know if a fence is signaled or not. Thus the fence
list became useless, so does the fence lock that mainly
protected the fence list.
Things like ring.ready are no longer behind a lock, this should
be ok as ring.ready is initialized once and will only change
when facing lockup. Worst case is that we return an -EBUSY just
after a successfull GPU reset, or we go into wait state instead
of returning -EBUSY (thus delaying reporting -EBUSY to fence
wait caller).
v2: Remove left over comment, force using writeback on cayman and
newer, thus not having to suffer from possibly scratch reg
exhaustion
v3: Rebase on top of change to uint64 fence patch
v4: Change DCE5 test to force write back on cayman and newer but
also any APU such as PALM or SUMO family
v5: Rebase on top of new uint64 fence patch
v6: Just break if seq doesn't change any more. Use radeon_fence
prefix for all function names. Even if it's now highly optimized,
try avoiding polling to often.
v7: We should never poll the last_seq from the hardware without
waking the sleeping threads, otherwise we might lose events.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index cdf46bc6dcc4..7c8711793421 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -263,15 +263,12 @@ struct radeon_fence_driver { atomic64_t last_seq; unsigned long last_activity; wait_queue_head_t queue; - struct list_head emitted; - struct list_head signaled; bool initialized; }; struct radeon_fence { struct radeon_device *rdev; struct kref kref; - struct list_head list; /* protected by radeon_fence.lock */ uint64_t seq; /* RB, DMA, etc. */ @@ -291,7 +288,7 @@ int radeon_fence_wait_next(struct radeon_device *rdev, int ring); int radeon_fence_wait_empty(struct radeon_device *rdev, int ring); struct radeon_fence *radeon_fence_ref(struct radeon_fence *fence); void radeon_fence_unref(struct radeon_fence **fence); -int radeon_fence_count_emitted(struct radeon_device *rdev, int ring); +unsigned radeon_fence_count_emitted(struct radeon_device *rdev, int ring); /* * Tiling registers @@ -1534,7 +1531,6 @@ struct radeon_device { struct radeon_mode_info mode_info; struct radeon_scratch scratch; struct radeon_mman mman; - rwlock_t fence_lock; struct radeon_fence_driver fence_drv[RADEON_NUM_RINGS]; struct radeon_semaphore_driver semaphore_drv; struct mutex ring_lock; |