drm/i915/perf: don't read head/tail pointers outside critical section

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Reading or writing those fields should only happen under
stream->oa_buffer.ptr_lock.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: d1df41eb72 ("drm/i915/perf: rework aging tail workaround")
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200330091411.37357-1-lionel.g.landwerlin@intel.com

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Lionel Landwerlin 2020-03-30 12:14:11 +03:00

parent b28b34ac85

commit d16e137e7f

1 changed files with 5 additions and 2 deletions

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drivers/gpu/drm/i915/i915_perf.c

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