diff options
| author | Peter Zijlstra <[email protected]> | 2013-07-04 12:56:46 +0800 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-07-23 12:22:06 +0200 |
| commit | 7d9ffa8961482232d964173cccba6e14d2d543b2 (patch) | |
| tree | 80fd615fb64b1bd82e0de0e5d1e8be2bae8cb06d /tools/perf/scripts/python/sched-migration.py | |
| parent | 62470419e993f8d9d93db0effd3af4296ecb79a5 (diff) | |
sched: Micro-optimize the smart wake-affine logic
Smart wake-affine is using node-size as the factor currently, but the overhead
of the mask operation is high.
Thus, this patch introduce the 'sd_llc_size' percpu variable, which will record
the highest cache-share domain size, and make it to be the new factor, in order
to reduce the overhead and make it more reasonable.
Tested-by: Davidlohr Bueso <[email protected]>
Tested-by: Michael Wang <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Michael Wang <[email protected]>
Cc: Mike Galbraith <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
[ Tidied up the changelog. ]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/sched-migration.py')
0 files changed, 0 insertions, 0 deletions