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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2008-06-27 13:41:34 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-27 14:31:44 +0200 |
| commit | cd80917e4ff465ea77106f8e4fb631eedc4cf426 (patch) | |
| tree | 0b12aed9293c8b0683e7f74d5d111f5d436fa017 /kernel/sched.c | |
| parent | 93b75217df39e6d75889cc6f8050343286aff4a5 (diff) | |
| download | lwn-cd80917e4ff465ea77106f8e4fb631eedc4cf426.tar.gz lwn-cd80917e4ff465ea77106f8e4fb631eedc4cf426.zip | |
sched: fix shares boost logic
In case the domain is empty, pretend there is a single task on each cpu, so
that together with the boost logic we end up giving 1/n shares to each
cpu.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 6c5eb3bc37e0..1cff969f6646 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -1549,6 +1549,9 @@ tg_shares_up(struct task_group *tg, int cpu, struct sched_domain *sd) if (!sd->parent || !(sd->parent->flags & SD_LOAD_BALANCE)) shares = tg->shares; + if (!rq_weight) + rq_weight = cpus_weight(sd->span) * NICE_0_LOAD; + for_each_cpu_mask(i, sd->span) { struct rq *rq = cpu_rq(i); unsigned long flags; |