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sparc64: Fix NMI programming when perf events are active. 

If perf events are active, we should not reset the %pcr to
PCR_PIC_PRIV.  That perf events code does the management.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2010-01-04 15:37:04 -08:00
parent 5958eed76c
commit 8183e2b384
1 changed files with 2 additions and 1 deletions
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3
arch/sparc/kernel/nmi.c
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@ -96,7 +96,6 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
int cpu = smp_processor_id();
clear_softint(1 << irq);
pcr_ops->write(PCR_PIC_PRIV);
local_cpu_data().__nmi_count++;
@ -105,6 +104,8 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
if (notify_die(DIE_NMI, "nmi", regs, 0,
pt_regs_trap_type(regs), SIGINT) == NOTIFY_STOP)
touched = 1;
else
pcr_ops->write(PCR_PIC_PRIV);
sum = kstat_irqs_cpu(0, cpu);
if (__get_cpu_var(nmi_touch)) {