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| author | Kyle Meyer <[email protected]> | 2024-04-10 21:33:11 +0000 |
|---|---|---|
| committer | Yury Norov <[email protected]> | 2024-05-09 16:25:08 +0000 |
| commit | 05037e5f0f17935a86861f9610f941ebf346a95e (patch) | |
| tree | e018ce2d77e9abcadef1c7227343f26c03dfed70 /lib/test_bitops.c | |
| parent | cpumask: Add for_each_cpu_from() (diff) | |
| download | kernel-05037e5f0f17935a86861f9610f941ebf346a95e.tar.gz kernel-05037e5f0f17935a86861f9610f941ebf346a95e.zip | |
sched/topology: Optimize topology_span_sane()
Optimize topology_span_sane() by removing duplicate comparisons.
Since topology_span_sane() is called inside of for_each_cpu(), each
previous CPU has already been compared against every other CPU. The
current CPU only needs to be compared against higher-numbered CPUs.
The total number of comparisons is reduced from N * (N - 1) to
N * (N - 1) / 2 on each non-NUMA scheduling domain level.
Signed-off-by: Kyle Meyer <[email protected]>
Reviewed-by: Yury Norov <[email protected]>
Acked-by: Vincent Guittot <[email protected]>
Signed-off-by: Yury Norov <[email protected]>
Diffstat (limited to 'lib/test_bitops.c')
0 files changed, 0 insertions, 0 deletions