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authorSiddha, Suresh B <suresh.b.siddha@intel.com>2007-05-08 00:33:01 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:15:17 -0700
commit4953198b6ce07b008b0f1c2edd41c9d027a118b4 (patch)
treedc0f500aae58c84ee7d422ac11990956ecbf9673 /include/asm-s390/appldata.h
parent5517d86bea237c1d7078840182d9ebc0fe4c1afc (diff)
sched: optimize siblings status check logic in wake_idle()
When a logical cpu 'x' already has more than one process running, then most likely the siblings of that cpu 'x' must be busy. Otherwise the idle siblings would have likely(in most of the scenarios) picked up the extra load making the load on 'x' atmost one. Use this logic to eliminate the siblings status check and minimize the cache misses encountered on a heavily loaded system. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-s390/appldata.h')
0 files changed, 0 insertions, 0 deletions