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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-03-20 21:28:08 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-23 10:30:16 +0100 |
| commit | 9848de082ff400f8b88e6d550bfce551838af69c (patch) | |
| tree | 63289e17f9c1adfe8fa2067b6605e28f38a7a264 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 0b37a9a9ebdf47dc9d5290a1c69bd944dde5cc15 (diff) | |
drm/i915: Use usleep_range() in wait_for()
msleep() can sleep for way too long, so switch wait_for() to use
usleep_range() instead. Following a totally unscientific method
I just picked the range as W-2W.
This cuts the i915 init time on my BSW to almost half:
- initcall i915_init+0x0/0xa8 [i915] returned 0 after 419977 usecs
+ initcall i915_init+0x0/0xa8 [i915] returned 0 after 238419 usecs
Note that I didn't perform any other benchmarks on this so far.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions