From 93f3b2ee0abff5438e74cc90cf816429248cc8eb Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 2 Jan 2013 16:54:12 +0100 Subject: [PATCH] s390/irq: count cpu restart events Count CPU Restart events and make them visible via /proc/interrupts. Every CPU hotplug (online) event will increase the per cpu counter. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/irq.h | 1 + arch/s390/kernel/irq.c | 1 + arch/s390/kernel/smp.c | 1 + 3 files changed, 3 insertions(+) diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h index c98dcac..7def773 100644 --- a/arch/s390/include/asm/irq.h +++ b/arch/s390/include/asm/irq.h @@ -42,6 +42,7 @@ enum interruption_class { IRQIO_PCI, IRQIO_MSI, NMI_NMI, + CPU_RST, NR_ARCH_IRQS }; diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 5f54624..9df824e 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -82,6 +82,7 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = { [IRQIO_PCI] = {.name = "PCI", .desc = "[I/O] PCI Interrupt" }, [IRQIO_MSI] = {.name = "MSI", .desc = "[I/O] MSI Interrupt" }, [NMI_NMI] = {.name = "NMI", .desc = "[NMI] Machine Check"}, + [CPU_RST] = {.name = "RST", .desc = "[CPU] CPU Restart"}, }; /* diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 4a36d5b..7433a2f 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -709,6 +709,7 @@ static void __cpuinit smp_start_secondary(void *cpuvoid) pfault_init(); notify_cpu_starting(smp_processor_id()); set_cpu_online(smp_processor_id(), true); + inc_irq_stat(CPU_RST); local_irq_enable(); /* cpu_idle will call schedule for us */ cpu_idle(); -- 2.7.4