diff options
Diffstat (limited to 'arch/powerpc/kernel/watchdog.c')
| -rw-r--r-- | arch/powerpc/kernel/watchdog.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c index af3c15a1d41e..c9a8f4781a10 100644 --- a/arch/powerpc/kernel/watchdog.c +++ b/arch/powerpc/kernel/watchdog.c @@ -26,7 +26,9 @@ #include <linux/delay.h> #include <linux/smp.h> +#include <asm/interrupt.h> #include <asm/paca.h> +#include <asm/nmi.h> /* * The powerpc watchdog ensures that each CPU is able to service timers. @@ -247,16 +249,17 @@ static void watchdog_timer_interrupt(int cpu) watchdog_smp_panic(cpu, tb); } -void soft_nmi_interrupt(struct pt_regs *regs) +DEFINE_INTERRUPT_HANDLER_NMI(soft_nmi_interrupt) { unsigned long flags; int cpu = raw_smp_processor_id(); u64 tb; - if (!cpumask_test_cpu(cpu, &wd_cpus_enabled)) - return; + /* should only arrive from kernel, with irqs disabled */ + WARN_ON_ONCE(!arch_irq_disabled_regs(regs)); - nmi_enter(); + if (!cpumask_test_cpu(cpu, &wd_cpus_enabled)) + return 0; __this_cpu_inc(irq_stat.soft_nmi_irqs); @@ -265,7 +268,7 @@ void soft_nmi_interrupt(struct pt_regs *regs) wd_smp_lock(&flags); if (cpumask_test_cpu(cpu, &wd_smp_cpus_stuck)) { wd_smp_unlock(&flags); - goto out; + return 0; } set_cpu_stuck(cpu, tb); @@ -289,8 +292,7 @@ void soft_nmi_interrupt(struct pt_regs *regs) if (wd_panic_timeout_tb < 0x7fffffff) mtspr(SPRN_DEC, wd_panic_timeout_tb); -out: - nmi_exit(); + return 0; } static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) |