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sparc64: Fix smp_callin() locking.
author
David S. Miller
<davem@davemloft.net>
Thu, 9 Apr 2009 04:06:35 +0000
(21:06 -0700)
committer
David S. Miller
<davem@davemloft.net>
Wed, 15 Apr 2009 00:08:56 +0000
(17:08 -0700)
Interrupts must be disabled when taking the IPI lock.
Caught by lockdep.
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/kernel/smp_64.c
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diff --git
a/arch/sparc/kernel/smp_64.c
b/arch/sparc/kernel/smp_64.c
index
708e12a
..
f7642e5
100644
(file)
--- a/
arch/sparc/kernel/smp_64.c
+++ b/
arch/sparc/kernel/smp_64.c
@@
-118,9
+118,9
@@
void __cpuinit smp_callin(void)
while (!cpu_isset(cpuid, smp_commenced_mask))
rmb();
- ipi_call_lock();
+ ipi_call_lock
_irq
();
cpu_set(cpuid, cpu_online_map);
- ipi_call_unlock();
+ ipi_call_unlock
_irq
();
/* idle thread is expected to have preempt disabled */
preempt_disable();