[PATCH] sched: less newidle locking

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Similarly to the earlier change in load_balance, only lock the runqueue in
load_balance_newidle if the busiest queue found has a nr_running > 1.  This
will reduce frequency of expensive remote runqueue lock aquisitions in the
schedule() path on some workloads.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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Nick Piggin 2005-09-10 00:26:16 -07:00 • committed by Linus Torvalds

parent 67f9a619e7

commit d6d5cfaf45

1 changed files with 10 additions and 7 deletions

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17

kernel/sched.c

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