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| author |   Ingo Molnar <mingo@elte.hu> | 2009-02-22 20:05:19 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-22 20:05:19 +0100 |
| commit | fc6fc7f1b1095b92d4834e69b385b91e412a7ce5 (patch) | |
| tree | 2ad451d5dac4d460830536944cef1de93be36b2a /kernel/sched.c | |
| parent | x86: select x2apic ops in early apic probe only if x2apic mode is enabled (diff) | |
| parent | PM: Split up sysdev_[suspend|resume] from device_power_[down|up] (diff) | |
| download | linux-dev-fc6fc7f1b1095b92d4834e69b385b91e412a7ce5.tar.xz linux-dev-fc6fc7f1b1095b92d4834e69b385b91e412a7ce5.zip | |
Merge branch 'linus' into x86/apic
Conflicts:
arch/x86/mach-default/setup.c
Semantic conflict resolution:
arch/x86/kernel/setup.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 61245b8d0f16..7d97ff7c4478 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -6939,20 +6939,26 @@ static void free_rootdomain(struct root_domain *rd) static void rq_attach_root(struct rq *rq, struct root_domain *rd) { + struct root_domain *old_rd = NULL; unsigned long flags; spin_lock_irqsave(&rq->lock, flags); if (rq->rd) { - struct root_domain *old_rd = rq->rd; + old_rd = rq->rd; if (cpumask_test_cpu(rq->cpu, old_rd->online)) set_rq_offline(rq); cpumask_clear_cpu(rq->cpu, old_rd->span); - if (atomic_dec_and_test(&old_rd->refcount)) - free_rootdomain(old_rd); + /* + * If we dont want to free the old_rt yet then + * set old_rd to NULL to skip the freeing later + * in this function: + */ + if (!atomic_dec_and_test(&old_rd->refcount)) + old_rd = NULL; } atomic_inc(&rd->refcount); @@ -6963,6 +6969,9 @@ static void rq_attach_root(struct rq *rq, struct root_domain *rd) set_rq_online(rq); spin_unlock_irqrestore(&rq->lock, flags); + + if (old_rd) + free_rootdomain(old_rd); } static int __init_refok init_rootdomain(struct root_domain *rd, bool bootmem) |