]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
drm/msm: Move submit bo flags update from obj lock
authorRob Clark <robdclark@chromium.org>
Mon, 20 Mar 2023 14:43:24 +0000 (07:43 -0700)
committerRob Clark <robdclark@chromium.org>
Sat, 25 Mar 2023 23:31:43 +0000 (16:31 -0700)
commit769fec1e4f918d840b1917eb2a371b6b94fb1984
treedcf185c3582c48920f8c869f29e0b87cf9c8d93c
parentf94e6a51e17ccff8e005be208e723ca265c8b881
drm/msm: Move submit bo flags update from obj lock

The flags are only accessed (1) when submit is constructed, before
enqueuing to gpu sched (ie. when still visible to only the task calling
the submit ioctl), (2) here, where we own a reference to the submit and
are serialized on the gpu sched thread, and (3) after the submit is
retired and last reference is dropped, which is serialized on the
submit's reference count.  Hence locking is unneeded here.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/527830/
Link: https://lore.kernel.org/r/20230320144356.803762-3-robdclark@gmail.com
drivers/gpu/drm/msm/msm_ringbuffer.c