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| author | Andi Kleen | 2009-05-27 21:56:57 +0200 |
|---|---|---|
| committer | H. Peter Anvin | 2009-06-03 23:40:38 +0200 |
| commit | ca84f69697da0f004135e45b63ca560b6bd3554e (patch) | |
| tree | 0106ff5c8a2def169e7d2900071b6543d6c4dc6a /arch/x86/kernel/cpu/mcheck/mce.c | |
| parent | x86, mce: add machine check exception count in /proc/interrupts (diff) | |
| download | kernel-qcow2-linux-ca84f69697da0f004135e45b63ca560b6bd3554e.tar.gz kernel-qcow2-linux-ca84f69697da0f004135e45b63ca560b6bd3554e.tar.xz kernel-qcow2-linux-ca84f69697da0f004135e45b63ca560b6bd3554e.zip | |
x86, mce: add MCE poll count to /proc/interrupts
Keep a count of the machine check polls (or CMCI events) in
/proc/interrupts.
Andi needs this for debugging, but it's also useful in general
to see what's going in by the kernel.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/mcheck/mce.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 287268d21836..784f6ae9d6f4 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -264,6 +264,8 @@ static inline void mce_get_rip(struct mce *m, struct pt_regs *regs) } } +DEFINE_PER_CPU(unsigned, mce_poll_count); + /* * Poll for corrected events or events that happened before reset. * Those are just logged through /dev/mcelog. @@ -275,6 +277,8 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) struct mce m; int i; + __get_cpu_var(mce_poll_count)++; + mce_setup(&m); m.mcgstatus = mce_rdmsrl(MSR_IA32_MCG_STATUS); |