diff options
| author | Chris Wilson <[email protected]> | 2020-07-28 16:21:44 +0100 |
|---|---|---|
| committer | Jani Nikula <[email protected]> | 2020-09-16 11:10:05 +0300 |
| commit | 20612303a0b45de748d31331407e84300c38e497 (patch) | |
| tree | 7ef200785d686bfa67d98b3dc700ec7d6763ac0d /scripts/gdb/linux/utils.py | |
| parent | b82a8b93b4f9008de97d6920184948563980df37 (diff) | |
drm/i915: Filter wake_flags passed to default_wake_function
(NOTE: This is the minimal backportable fix, a full fix is being
developed at https://patchwork.freedesktop.org/patch/388048/)
The flags passed to the wait_entry.func are passed onwards to
try_to_wake_up(), which has a very particular interpretation for its
wake_flags. In particular, beyond the published WF_SYNC, it has a few
internal flags as well. Since we passed the fence->error down the chain
via the flags argument, these ended up in the default_wake_function
confusing the kernel/sched.
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2110
Fixes: ef4688497512 ("drm/i915: Propagate fence errors")
Signed-off-by: Chris Wilson <[email protected]>
Cc: Matthew Auld <[email protected]>
Cc: <[email protected]> # v5.4+
Reviewed-by: Matthew Auld <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Rodrigo Vivi <[email protected]>
[Joonas: Rebased and reordered into drm-intel-gt-next branch]
[Joonas: Added a note and link about more complete fix]
Signed-off-by: Joonas Lahtinen <[email protected]>
(cherry picked from commit f4b3c395540aa3d4f5a6275c5bdd83ab89034806)
Signed-off-by: Jani Nikula <[email protected]>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions