diff options
| author | Siddha, Suresh B <suresh.b.siddha@intel.com> | 2007-05-08 03:32:48 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 14:15:17 -0400 |
| commit | bdecea3a9282d529b54954f3f1e59877629baba1 (patch) | |
| tree | c7330b1cec4b4a9bf18657bc99100276343efc38 /kernel/time/tick-sched.c | |
| parent | 2bd7e20e0d24325b0799544bc8105cc57cc8e2aa (diff) | |
sched: fix idle load balancing in softirqd context
Periodic load balancing in recent kernels happen in the softirq. In
certain -rt configurations, these softirqs are handled in softirqd context.
And hence the check for idle processor was always returning busy (as
nr_running > 1).
This patch captures the idle information at the tick and passes this info
to softirq context through an element 'idle_at_tick' in rq.
[kernel@kolivas.org: Fix reverse idle at tick logic]
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/time/tick-sched.c')
0 files changed, 0 insertions, 0 deletions