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From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Subject: [Intel-gfx] [PATCH 07/10] drm/syncobj: Allow use of dma-fence-proxy
Date: Fri,  3 Apr 2020 10:12:57 +0100	[thread overview]
Message-ID: <20200403091300.14734-7-chris@chris-wilson.co.uk> (raw)
In-Reply-To: <20200403091300.14734-1-chris@chris-wilson.co.uk>

Allow the callers to supply a dma-fence-proxy for asynchronous waiting on
future fences.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_syncobj.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 42d46414f767..e141db0e1eb6 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -184,6 +184,7 @@
  */
 
 #include <linux/anon_inodes.h>
+#include <linux/dma-fence-proxy.h>
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/sched/signal.h>
@@ -324,14 +325,9 @@ void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
 	struct dma_fence *old_fence;
 	struct syncobj_wait_entry *cur, *tmp;
 
-	if (fence)
-		dma_fence_get(fence);
-
 	spin_lock(&syncobj->lock);
 
-	old_fence = rcu_dereference_protected(syncobj->fence,
-					      lockdep_is_held(&syncobj->lock));
-	rcu_assign_pointer(syncobj->fence, fence);
+	old_fence = dma_fence_replace_proxy(&syncobj->fence, fence);
 
 	if (fence != old_fence) {
 		list_for_each_entry_safe(cur, tmp, &syncobj->cb_list, node)
-- 
2.20.1

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  parent reply	other threads:[~2020-04-03  9:13 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-03  9:12 [Intel-gfx] [PATCH 01/10] drm/i915/selftests: Add request throughput measurement to perf Chris Wilson
2020-04-03  9:12 ` [Intel-gfx] [PATCH 02/10] drm/i915/gt: Yield the timeslice if caught waiting on a user semaphore Chris Wilson
2020-04-07  9:07   ` Tvrtko Ursulin
2020-04-03  9:12 ` [Intel-gfx] [PATCH 03/10] dma-buf: Prettify typecasts for dma-fence-chain Chris Wilson
2020-04-03  9:12 ` [Intel-gfx] [PATCH 04/10] dma-buf: Report signaled links inside dma-fence-chain Chris Wilson
2020-04-08 19:46   ` Venkata Sandeep Dhanalakota
2020-04-08 20:00   ` Lionel Landwerlin
2020-04-09 10:52     ` Chris Wilson
2020-04-09 11:16       ` Lionel Landwerlin
2020-04-09 13:46         ` Chris Wilson
2020-04-03  9:12 ` [Intel-gfx] [PATCH 05/10] dma-buf: Exercise dma-fence-chain under selftests Chris Wilson
2020-04-08 19:49   ` Venkata Sandeep Dhanalakota
2020-04-10 16:11   ` Lionel Landwerlin
2020-04-03  9:12 ` [Intel-gfx] [PATCH 06/10] dma-buf: Proxy fence, an unsignaled fence placeholder Chris Wilson
2020-04-05 22:14   ` kbuild test robot
2020-04-05 22:14     ` kbuild test robot
2020-04-06 18:32     ` Nick Desaulniers
2020-04-06 18:32       ` Nick Desaulniers
2020-04-03  9:12 ` Chris Wilson [this message]
2020-04-03  9:12 ` [Intel-gfx] [PATCH 08/10] drm/i915/gem: Teach execbuf how to wait on future syncobj Chris Wilson
2020-04-03  9:12 ` [Intel-gfx] [PATCH 09/10] drm/i915/gem: Allow combining submit-fences with syncobj Chris Wilson
2020-04-07 10:44   ` Tvrtko Ursulin
2020-04-07 10:51     ` Chris Wilson
2020-04-08  9:28       ` Tvrtko Ursulin
2020-04-03  9:13 ` [Intel-gfx] [PATCH 10/10] drm/i915/gt: Declare when we enabled timeslicing Chris Wilson
2020-04-07 10:50   ` Tvrtko Ursulin
2020-04-07 10:55     ` Chris Wilson
2020-04-03  9:32 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/10] drm/i915/selftests: Add request throughput measurement to perf Patchwork
2020-04-03  9:58 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-04-03 17:23 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2020-03-31 21:25 [Intel-gfx] [PATCH 01/10] " Chris Wilson
2020-03-31 21:25 ` [Intel-gfx] [PATCH 07/10] drm/syncobj: Allow use of dma-fence-proxy Chris Wilson

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