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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-08-01 14:00:54 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-10 14:30:02 +0200 |
| commit | 04019bf8ebb3c8cd66d75046054aeb264ba2db54 (patch) | |
| tree | 0b2b6ecbbf1df42c09ef213e3fe3c7702ef04a87 /arch/powerpc/kernel/watchdog.c | |
| parent | powerpc: Add irq accounting for system reset interrupts (diff) | |
| download | linux-04019bf8ebb3c8cd66d75046054aeb264ba2db54.tar.xz linux-04019bf8ebb3c8cd66d75046054aeb264ba2db54.zip | |
powerpc: Add irq accounting for watchdog interrupts
This adds an irq counter for the watchdog soft-NMI. This interrupt
only fires when interrupts are soft-disabled, so it will not
increment much even when the watchdog is running. However it's
useful for debugging and sanity checking.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/watchdog.c')
| -rw-r--r-- | arch/powerpc/kernel/watchdog.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c index b67f8b03a32d..4b9a567c9975 100644 --- a/arch/powerpc/kernel/watchdog.c +++ b/arch/powerpc/kernel/watchdog.c @@ -204,6 +204,9 @@ void soft_nmi_interrupt(struct pt_regs *regs) return; nmi_enter(); + + __this_cpu_inc(irq_stat.soft_nmi_irqs); + tb = get_tb(); if (tb - per_cpu(wd_timer_tb, cpu) >= wd_panic_timeout_tb) { per_cpu(wd_timer_tb, cpu) = tb; |