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linux/drivers/dma-buf
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Chris Wilson 9c98f021e4 dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling) 
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
2019-10-04 11:43:45 +01:00
..
dma-buf.c dma-buf: Restore seqlock around dma_resv updates 2019-08-16 12:40:58 +01:00
dma-fence-array.c dma-fence: Propagate errors to dma-fence-array container 2019-08-12 08:25:52 +01:00
dma-fence-chain.c dma-buf: fix stack corruption in dma_fence_chain_release 2019-08-05 17:32:33 +02:00
dma-fence.c dma-fence: Serialise signal enabling (dma_fence_enable_sw_signaling) 2019-10-04 11:43:45 +01:00
dma-resv.c dma-buf/resv: fix exclusive fence get 2019-09-22 13:18:46 +01:00
Kconfig dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
Makefile dma-buf: Add selftests for dma-fence 2019-08-19 18:09:46 +01:00
selftest.c dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
selftest.h dma-buf: Introduce selftesting framework 2019-08-19 18:01:34 +01:00
selftests.h dma-buf: Add selftests for dma-fence 2019-08-19 18:09:46 +01:00
seqno-fence.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
st-dma-fence.c dmabuf: Mark up onstack timer for selftests 2019-08-20 13:49:15 +01:00
sw_sync.c dma-buf/sw_sync: Synchronize signal vs syncpt free 2019-08-13 07:57:51 +01:00
sync_debug.c Linux 5.2-rc5 2019-06-19 12:07:29 +02:00
sync_debug.h dma-buf: Remove unused sync_dump() 2019-04-23 09:30:07 +01:00
sync_file.c dma-fence: Report the composite sync_file status 2019-08-12 10:37:52 +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
udmabuf.c udmabuf: actually unmap the scatterlist 2019-06-05 10:41:17 +02:00