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| author |   Anton Blanchard <anton@samba.org> | 2010-01-31 20:34:06 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-02-17 14:02:49 +1100 |
| commit | 89713ed10815401a1bfe12e3a076b64048381b56 (patch) | |
| tree | 2d9ce51782997e3ed265dbee7c72c3e7b0c776e3 /arch/powerpc/kernel/traps.c | |
| parent | powerpc: Remove whitespace in irq chip name fields (diff) | |
| download | linux-dev-89713ed10815401a1bfe12e3a076b64048381b56.tar.xz linux-dev-89713ed10815401a1bfe12e3a076b64048381b56.zip | |
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/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 0a320dbd950a..895da29e7db8 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -483,6 +483,8 @@ void machine_check_exception(struct pt_regs *regs) { int recover = 0; + __get_cpu_var(irq_stat).mce_exceptions++; + /* See if any machine dependent calls. In theory, we would want * to call the CPU first, and call the ppc_md. one if the CPU * one returns a positive number. However there is existing code @@ -965,6 +967,8 @@ void vsx_unavailable_exception(struct pt_regs *regs) void performance_monitor_exception(struct pt_regs *regs) { + __get_cpu_var(irq_stat).pmu_irqs++; + perf_irq(regs); } |