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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-09-27 09:11:46 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-05-14 18:38:06 (GMT) |
| commit | d6edff54c47a9279ea9c0ab5379e181c022c8cc5 (patch) | |
| tree | e57ba9e2bfa163ed3d94d9b774609ded0aca864a /mm | |
| parent | 3f082bc62014a5f9fc0f1ec72c475c1ba812200c (diff) | |
| download | linux-fsl-qoriq-d6edff54c47a9279ea9c0ab5379e181c022c8cc5.tar.xz | |
mm: page_alloc: Use local_lock_on() instead of plain spinlock
The plain spinlock while sufficient does not update the local_lock
internals. Use a proper local_lock function instead to ease debugging.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable-rt@vger.kernel.org
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 22a15d2..36c40eb 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -235,9 +235,9 @@ static DEFINE_LOCAL_IRQ_LOCK(pa_lock); #ifdef CONFIG_PREEMPT_RT_BASE # define cpu_lock_irqsave(cpu, flags) \ - spin_lock_irqsave(&per_cpu(pa_lock, cpu).lock, flags) + local_lock_irqsave_on(pa_lock, flags, cpu) # define cpu_unlock_irqrestore(cpu, flags) \ - spin_unlock_irqrestore(&per_cpu(pa_lock, cpu).lock, flags) + local_unlock_irqrestore_on(pa_lock, flags, cpu) #else # define cpu_lock_irqsave(cpu, flags) local_irq_save(flags) # define cpu_unlock_irqrestore(cpu, flags) local_irq_restore(flags) |