From: Nicholas Piggin <npiggin@gmail.com>
Date: Tue, 1 Aug 2017 12:00:53 +0000 (+1000)
Subject: powerpc: Add irq accounting for system reset interrupts
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ca41ad4377072e3e51593a2a9593c6cdbf4a5c0d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

powerpc: Add irq accounting for system reset interrupts

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

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))