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| author | Christoph Lameter <christoph@lameter.com> | 2005-06-23 00:10:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 09:45:30 -0700 |
| commit | 71a2224d7d1cefc23a1ac80bba421cc069cc3257 (patch) | |
| tree | 3b3bc52e592484f008b4f1035a0d2e9e16b029f3 /Makefile | |
| parent | b030a4dd609e167da7f73c2d1fa5af864a0aea17 (diff) | |
| download | lwn-71a2224d7d1cefc23a1ac80bba421cc069cc3257.tar.gz lwn-71a2224d7d1cefc23a1ac80bba421cc069cc3257.zip | |
[PATCH] Optimize sys_times for a single thread process
Avoid taking the tasklist_lock in sys_times if the process is single
threaded. In a NUMA system taking the tasklist_lock may cause a bouncing
cacheline if multiple independent processes continually call sys_times to
measure their performance.
Signed-off-by: Christoph Lameter <christoph@lameter.com>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions