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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-31 15:07:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-03-31 15:07:43 -0700 |
| commit | cf6fafcf0588093fadf0c8cd69bebe3b5df136c7 (patch) | |
| tree | 1aefe138b60f9b74ed64a80c2ce4e22a0749a8ca /lib/average.c | |
| parent | 1ce235faa8fefa4eb7199cad890944c1d2ba1b3e (diff) | |
| parent | 21ddfd38ee9aac804d22beaceed4c7b903cca234 (diff) | |
Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu changes from Tejun Heo:
"The percpu allocation is now popular enough for the extremely naive
range allocator to cause scalability issues.
The existing allocator linearly scanned the allocation map on both
alloc and free without making use of hint or anything. Al
reimplemented the range allocator so that it can use binary search
instead of linear scan during free and alloc path uses simple hinting
to avoid scanning in common cases. Combined, the new allocator
resolves the scalability issue percpu allocator was showing during
container benchmark workload"
* 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: renew the max_contig if we merge the head and previous block
percpu: allocation size should be even
percpu: speed alloc_pcpu_area() up
percpu: store offsets instead of lengths in ->map[]
perpcu: fold pcpu_split_block() into the only caller
Diffstat (limited to 'lib/average.c')
0 files changed, 0 insertions, 0 deletions