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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-04-05 10:14:25 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-04-05 10:29:36 +0200 |
| commit | 49c022e657fbe661460d191fbe776a387132e2b3 (patch) | |
| tree | 487b713816a5ff3d81437aeecf111ffa414f6ede /Documentation/scsi/ChangeLog.ncr53c8xx | |
| parent | b2a8b4b81966094703088a7bc76a313af841924d (diff) | |
| download | kernel_samsung_smdk4412-49c022e657fbe661460d191fbe776a387132e2b3.zip kernel_samsung_smdk4412-49c022e657fbe661460d191fbe776a387132e2b3.tar.gz kernel_samsung_smdk4412-49c022e657fbe661460d191fbe776a387132e2b3.tar.bz2 | |
sched: Clean up rebalance_domains() load-balance interval calculation
Instead of the possible multiple-evaluation of num_online_cpus()
in rebalance_domains() that Linus reported, avoid it altogether
in the normal case since it's implemented with a Hamming weight
function over a cpu bitmask which can be darn expensive for those
with big iron.
This also makes it cleaner, smaller and documents the code.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1301991265.2225.12.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/scsi/ChangeLog.ncr53c8xx')
0 files changed, 0 insertions, 0 deletions