From ca41ad4377072e3e51593a2a9593c6cdbf4a5c0d Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Tue, 1 Aug 2017 22:00:53 +1000 Subject: [PATCH] powerpc: Add irq accounting for system reset interrupts Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/hardirq.h | 1 + arch/powerpc/kernel/irq.c | 6 ++++++ arch/powerpc/kernel/traps.c | 2 ++ 3 files changed, 9 insertions(+) diff --git a/arch/powerpc/include/asm/hardirq.h b/arch/powerpc/include/asm/hardirq.h index 8add8b861e8d..64b73b03d473 100644 --- a/arch/powerpc/include/asm/hardirq.h +++ b/arch/powerpc/include/asm/hardirq.h @@ -12,6 +12,7 @@ typedef struct { unsigned int mce_exceptions; unsigned int spurious_irqs; unsigned int hmi_exceptions; + unsigned int sreset_irqs; #ifdef CONFIG_PPC_DOORBELL unsigned int doorbell_irqs; #endif diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 0bcec745a672..5c18335580b6 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -470,6 +470,11 @@ int arch_show_interrupts(struct seq_file *p, int prec) seq_printf(p, " Hypervisor Maintenance Interrupts\n"); } + seq_printf(p, "%*s: ", prec, "NMI"); + for_each_online_cpu(j) + seq_printf(p, "%10u ", per_cpu(irq_stat, j).sreset_irqs); + seq_printf(p, " System Reset interrupts\n"); + #ifdef CONFIG_PPC_DOORBELL if (cpu_has_feature(CPU_FTR_DBELL)) { seq_printf(p, "%*s: ", prec, "DBL"); @@ -494,6 +499,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu) sum += per_cpu(irq_stat, cpu).spurious_irqs; sum += per_cpu(irq_stat, cpu).timer_irqs_others; sum += per_cpu(irq_stat, cpu).hmi_exceptions; + sum += per_cpu(irq_stat, cpu).sreset_irqs; #ifdef CONFIG_PPC_DOORBELL sum += per_cpu(irq_stat, cpu).doorbell_irqs; #endif diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index d42c567e3c29..ec1557f1b157 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -288,6 +288,8 @@ void system_reset_exception(struct pt_regs *regs) if (!nested) nmi_enter(); + __this_cpu_inc(irq_stat.sreset_irqs); + /* See if any machine dependent calls */ if (ppc_md.system_reset_exception) { if (ppc_md.system_reset_exception(regs)) -- 2.20.1