mirror-linux/include
Christian König d67b5a2b97 dma-buf: add dma_fence_timestamp helper
commit b83ce9cb4a upstream.

When a fence signals there is a very small race window where the timestamp
isn't updated yet. sync_file solves this by busy waiting for the
timestamp to appear, but on other ocassions didn't handled this
correctly.

Provide a dma_fence_timestamp() helper function for this and use it in
all appropriate cases.

Another alternative would be to grab the spinlock when that happens.

v2 by teddy: add a wait parameter to wait for the timestamp to show up, in case
   the accurate timestamp is needed and/or the timestamp is not based on
   ktime (e.g. hw timestamp)
v3 chk: drop the parameter again for unified handling

Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 1774baa64f ("drm/scheduler: Change scheduled fence track v2")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20230929104725.2358-1-christian.koenig@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-19 23:08:57 +02:00
..
acpi
asm-generic word-at-a-time: use the same return type for has_zero regardless of endianness 2023-08-11 12:08:11 +02:00
clocksource
crypto crypto: api - Use work queue in crypto_destroy_instance 2023-09-13 09:42:32 +02:00
drm drm/display/dp: Fix the DP DSC Receiver cap size 2023-08-30 16:11:09 +02:00
dt-bindings dt-bindings: clock: qcom,gcc-sc8280xp: Add missing GDSCs 2023-09-13 09:42:45 +02:00
keys
kunit
kvm KVM: arm64: vgic-v4: Make the doorbell request robust w.r.t preemption 2023-08-23 17:52:28 +02:00
linux dma-buf: add dma_fence_timestamp helper 2023-10-19 23:08:57 +02:00
math-emu
media media: cec: core: add adap_unconfigured() callback 2023-09-13 09:42:54 +02:00
memory
misc
net tcp: enforce receive buffer memory limits by allowing the tcp window to shrink 2023-10-19 23:08:54 +02:00
pcmcia
ras
rdma
rv
scsi scsi: Do not attempt to rescan suspended devices 2023-10-10 22:00:35 +02:00
soc
sound
target
trace ipv6: Remove in6addr_any alternatives. 2023-09-19 12:28:10 +02:00
uapi netlink: remove the flex array from struct nlmsghdr 2023-10-10 22:00:46 +02:00
ufs
vdso
video
xen