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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 11:33:20 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-03-21 14:14:55 +0000 |
| commit | 899f6204c0f8117d33226e586d3a630b3cf9bce0 (patch) | |
| tree | 366786612877abc5581dfec13a8ed18e6f26677e /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | drm/i915: split out check for noncontiguous pfn range (diff) | |
| download | linux-899f6204c0f8117d33226e586d3a630b3cf9bce0.tar.gz linux-899f6204c0f8117d33226e586d3a630b3cf9bce0.zip | |
drm/i915/execlists: Split the atomic test_and_clear_bit for irq handler
Rather than impose the cost of a locked test before queuing a new
request, reduce it to a simple test_bit() with a following clear_bit()
prior to doing the CSB check. This ensure that if an interrupt does
occur whilst reading from the CSB, we still detect it (the interrupt
would trigger a rescheduling of the tasklet anyway).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170321113320.2603-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions