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| author | Gregory Haskins <ghaskins@novell.com> | 2008-03-10 16:52:41 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-11 14:02:58 +0100 |
| commit | 1f94ef598e8d29b92b9fc85d43c832e03721d3cb (patch) | |
| tree | f9573663c4bb83a9af4d17b90c174869b50ba2b1 /kernel | |
| parent | 2f44bbb495dd3e6d0209eff2257438ab9c570e5b (diff) | |
| download | linux-1f94ef598e8d29b92b9fc85d43c832e03721d3cb.tar.gz | |
Revert "cpu hotplug: adjust root-domain->online span in response to hotplug event"
This reverts commit 393d94d98b19089ec172566e23557997931b137e. Lets fix this right. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index b02e4fc25645..52b98675acb2 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -5813,13 +5813,6 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) /* Must be high prio: stop_machine expects to yield to it. */ rq = task_rq_lock(p, &flags); __setscheduler(rq, p, SCHED_FIFO, MAX_RT_PRIO-1); - - /* Update our root-domain */ - if (rq->rd) { - BUG_ON(!cpu_isset(cpu, rq->rd->span)); - cpu_set(cpu, rq->rd->online); - } - task_rq_unlock(rq, &flags); cpu_rq(cpu)->migration_thread = p; break; @@ -5828,6 +5821,15 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) case CPU_ONLINE_FROZEN: /* Strictly unnecessary, as first user will wake it. */ wake_up_process(cpu_rq(cpu)->migration_thread); + + /* Update our root-domain */ + rq = cpu_rq(cpu); + spin_lock_irqsave(&rq->lock, flags); + if (rq->rd) { + BUG_ON(!cpu_isset(cpu, rq->rd->span)); + cpu_set(cpu, rq->rd->online); + } + spin_unlock_irqrestore(&rq->lock, flags); break; #ifdef CONFIG_HOTPLUG_CPU @@ -6103,6 +6105,8 @@ static void rq_attach_root(struct rq *rq, struct root_domain *rd) rq->rd = rd; cpu_set(rq->cpu, rd->span); + if (cpu_isset(rq->cpu, cpu_online_map)) + cpu_set(rq->cpu, rd->online); for (class = sched_class_highest; class; class = class->next) { if (class->join_domain) |