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authorIan Munsie <imunsie@au1.ibm.com>2013-03-21 19:22:52 +0000
committerMichael Ellerman <michael@ellerman.id.au>2013-04-18 15:59:55 +1000
commita6a058e52a0ce62de84496c9d4b133f2afc61f27 (patch)
treea140df07d650136779b3a8b1772a13ad6d3f26ed /arch/powerpc/kernel/dbell.c
parent61435690a9c781b4c9e617aa86bd20c146c9a998 (diff)
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powerpc: Add accounting for Doorbell interrupts
This patch adds a new line to /proc/interrupts to account for the doorbell interrupts that each hardware thread has received. The total interrupt count in /proc/stat will now also include doorbells. # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 16: 551 1267 281 175 XICS Level IPI LOC: 2037 1503 1688 1625 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts CNT: 0 0 0 0 Performance monitoring interrupts MCE: 0 0 0 0 Machine check exceptions DBL: 42 550 20 91 Doorbell interrupts Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/dbell.c')
-rw-r--r--arch/powerpc/kernel/dbell.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/dbell.c b/arch/powerpc/kernel/dbell.c
index 9ebbc24bb23c..d55c76c571f3 100644
--- a/arch/powerpc/kernel/dbell.c
+++ b/arch/powerpc/kernel/dbell.c
@@ -41,6 +41,8 @@ void doorbell_exception(struct pt_regs *regs)
may_hard_irq_enable();
+ __get_cpu_var(irq_stat).doorbell_irqs++;
+
smp_ipi_demux();
irq_exit();
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