Chris Wilson 8e634b7b19 dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling) ... [ Upstream commit 9c98f021e4 ] Make dma_fence_enable_sw_signaling() behave like its dma_fence_add_callback() and dma_fence_default_wait() counterparts and perform the test to enable signaling under the fence->lock, along with the action to do so. This ensure that should an implementation be trying to flush the cb_list (by signaling) on retirement before freeing the fence, it can do so in a race-free manner. See also 0fc89b6802 ("dma-fence: Simply wrap dma_fence_signal_locked with dma_fence_signal"). v2: Refactor all 3 enable_signaling paths to use a common function. v3: Don't argue, just keep the tracepoint in the existing spot. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191004101140.32713-1-chris@chris-wilson.co.uk Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-10-01 13:14:24 +02:00
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dma-buf.c	dma-buf: balance refcount inbalance	2019-07-28 08:29:28 +02:00
dma-fence-array.c	dma-fence: Make ->wait callback optional	2018-07-03 13:12:57 +02:00
dma-fence.c	dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling)	2020-10-01 13:14:24 +02:00
Kconfig
Makefile
reservation.c	dma-buf: Discard old fence_excl on retrying get_fences_rcu for realloc	2019-07-28 08:29:28 +02:00
seqno-fence.c
sw_sync.c	dma-buf/sw_sync: Synchronize signal vs syncpt free	2019-10-07 18:57:04 +02:00
sync_debug.c	Linux 4.13-rc2	2017-07-27 08:15:43 +10:00
sync_debug.h	dma-buf: Remove unneeded stubs around sync_debug interfaces	2018-05-07 15:58:07 +02:00
sync_file.c	dma-buf: Fix memory leak in sync_file_merge()	2019-12-21 10:57:38 +01:00
sync_trace.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00