diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-23 13:48:03 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-23 22:13:51 +0000 |
| commit | 2e70b8c6bf0003bf1691ac5cab5aff128747d494 (patch) | |
| tree | 3e5305d47eb23cb88529fa6cc9637cf748c01c65 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 292889e1ffa8bb56fda2c6208d3f884ce97e1189 (diff) | |
drm/i915/execlists: Relax the locked clear_bit(IRQ_EXECLIST)
We only need to care about the ordering of the clearing of the bit with
the uncached CSB read in order to correctly detect a new interrupt
before the read completes. The uncached read itself acts as a full
memory barrier, so we do not need to enforce another in the form of a
locked clear_bit.
v2: Clarify why the split and unlocked test/clear is harmless.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170323134803.10418-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions