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powerpc: Add irq accounting for system reset interrupts

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Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2017-08-01 22:00:53 +10:00 committed by Michael Ellerman
parent 75eb767e4c
commit ca41ad4377
3 changed files with 9 additions and 0 deletions
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1
arch/powerpc/include/asm/hardirq.h
View file

@ -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

6
arch/powerpc/kernel/irq.c
View file

@ -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

2
arch/powerpc/kernel/traps.c
View file

@ -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))