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authorAnton Blanchard <anton@samba.org>2010-01-31 20:34:06 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-02-17 14:02:49 +1100
commit89713ed10815401a1bfe12e3a076b64048381b56 (patch)
tree2d9ce51782997e3ed265dbee7c72c3e7b0c776e3 /arch/powerpc/include/asm
parentfc380c0c8a17bc2bd2d9d7fb41d4a88c3e618db2 (diff)
powerpc: Add timer, performance monitor and machine check counts to /proc/interrupts
With NO_HZ it is useful to know how often the decrementer is going off. The patch below adds an entry for it and also adds it into the /proc/stat summaries. While here, I added performance monitoring and machine check exceptions. I found it useful to keep an eye on the PMU exception rate when using the perf tool. Since it's possible to take a completely handled machine check on a System p box it also sounds like a good idea to keep a machine check summary. The event naming matches x86 to keep gratuitous differences to a minimum. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/hardirq.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hardirq.h b/arch/powerpc/include/asm/hardirq.h
index 9bf3467581b..cd2d4be882a 100644
--- a/arch/powerpc/include/asm/hardirq.h
+++ b/arch/powerpc/include/asm/hardirq.h
@@ -6,6 +6,9 @@
typedef struct {
unsigned int __softirq_pending;
+ unsigned int timer_irqs;
+ unsigned int pmu_irqs;
+ unsigned int mce_exceptions;
} ____cacheline_aligned irq_cpustat_t;
DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
@@ -19,4 +22,10 @@ static inline void ack_bad_irq(unsigned int irq)
printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
}
+extern u64 arch_irq_stat_cpu(unsigned int cpu);
+#define arch_irq_stat_cpu arch_irq_stat_cpu
+
+extern u64 arch_irq_stat(void);
+#define arch_irq_stat arch_irq_stat
+
#endif /* _ASM_POWERPC_HARDIRQ_H */