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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-28 17:16:14 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-29 13:13:50 +0000 |
| commit | 8a5746982e0fdabae85990d90a9b80e107fcd450 (patch) | |
| tree | 47785698f67c2f75546d4f45c0b76094db6380e9 /drivers/gpu/drm/i915/i915_gpu_error.h | |
| parent | ba12993c5228015c42dc46d634f5fa5717206c3b (diff) | |
| download | linux-8a5746982e0fdabae85990d90a9b80e107fcd450.tar.gz linux-8a5746982e0fdabae85990d90a9b80e107fcd450.tar.bz2 linux-8a5746982e0fdabae85990d90a9b80e107fcd450.zip | |
drm/i915/execlist: Mark up racy read of execlists->pending[0]
We write to execlists->pending[0] in process_csb() to acknowledge the
completion of the ESLP update, outside of the main spinlock. When we
check the current status of the previous submission in
__execlists_submission_tasklet() we should therefore use READ_ONCE() to
reflect and document the unsynchronized read.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200128171614.3845825-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gpu_error.h')
0 files changed, 0 insertions, 0 deletions