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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-25 12:02:26 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-25 13:05:04 +0000 |
| commit | 6670b413f8452ec303efcd2f9a6009c8602a297e (patch) | |
| tree | c02290b4cbf328535a5f28ede27d56b1079256db /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | drm/i915/selftests: Measure the energy consumed while in RC6 (diff) | |
drm/i915/execlists: Pull tasklet interrupt-bh local to direct submission
We dropped calling process_csb prior to handling direct submission in
order to avoid the nesting of spinlocks and lift process_csb() and the
majority of the tasklet out of irq-off. However, we do want to avoid
ksoftirqd latency in the fast path, so try and pull the interrupt-bh
local to direct submission if we can acquire the tasklet's lock.
v2: Document the read of pending[0] from outside the tasklet with
READ_ONCE.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200325120227.8044-1-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions