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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-02-15 12:41:46 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2011-02-16 13:30:57 +0100 |
| commit | ba3dd36c6775264ee6e7354ba1aabcd6e86d7298 (patch) | |
| tree | f48441ff3179a91b4acde6c785726a34e6dc856a /tools/perf/util/ui/helpline.c | |
| parent | perf: Optimize throttling code (diff) | |
| download | linux-dev-ba3dd36c6775264ee6e7354ba1aabcd6e86d7298.tar.xz linux-dev-ba3dd36c6775264ee6e7354ba1aabcd6e86d7298.zip | |
perf: Optimize hrtimer events
There is no need to re-initialize the hrtimer every time we start it,
so don't do that (shaves a few cycles). Also, since we know hrtimers
run at a fixed rate (nanoseconds) we can pre-compute the desired
frequency at which they tick. This avoids us having to go through the
whole adaptive frequency feedback logic (shaves another few cycles).
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1297448589.5226.47.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions