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-rw-r--r--arch/powerpc/include/asm/nmi.h2
-rw-r--r--arch/sparc/include/asm/nmi.h1
-rw-r--r--include/linux/nmi.h13
3 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
index 43bfd4de868f..ce25318c3902 100644
--- a/arch/powerpc/include/asm/nmi.h
+++ b/arch/powerpc/include/asm/nmi.h
@@ -3,11 +3,9 @@
#define _ASM_NMI_H
#ifdef CONFIG_PPC_WATCHDOG
-extern void arch_touch_nmi_watchdog(void);
long soft_nmi_interrupt(struct pt_regs *regs);
void watchdog_hardlockup_set_timeout_pct(u64 pct);
#else
-static inline void arch_touch_nmi_watchdog(void) {}
static inline void watchdog_hardlockup_set_timeout_pct(u64 pct) {}
#endif
diff --git a/arch/sparc/include/asm/nmi.h b/arch/sparc/include/asm/nmi.h
index 90ee7863d9fe..920dc23f443f 100644
--- a/arch/sparc/include/asm/nmi.h
+++ b/arch/sparc/include/asm/nmi.h
@@ -8,7 +8,6 @@ void nmi_adjust_hz(unsigned int new_hz);
extern atomic_t nmi_active;
-void arch_touch_nmi_watchdog(void);
void start_nmi_watchdog(void *unused);
void stop_nmi_watchdog(void *unused);
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index d35393405b24..07bf2b813463 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -7,6 +7,8 @@
#include <linux/sched.h>
#include <asm/irq.h>
+
+/* Arch specific watchdogs might need to share extra watchdog-related APIs. */
#if defined(CONFIG_HAVE_NMI_WATCHDOG)
#include <asm/nmi.h>
#endif
@@ -87,12 +89,17 @@ extern unsigned int hardlockup_panic;
static inline void hardlockup_detector_disable(void) {}
#endif
-#if defined(CONFIG_HARDLOCKUP_DETECTOR_COUNTS_HRTIMER)
+/* Sparc64 has special implemetantion that is always enabled. */
+#if defined(CONFIG_HARDLOCKUP_DETECTOR) || \
+ (defined(CONFIG_HAVE_NMI_WATCHDOG) && !defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH))
void arch_touch_nmi_watchdog(void);
+#else
+static inline void arch_touch_nmi_watchdog(void) { }
+#endif
+
+#if defined(CONFIG_HARDLOCKUP_DETECTOR_COUNTS_HRTIMER)
void watchdog_hardlockup_touch_cpu(unsigned int cpu);
void watchdog_hardlockup_check(unsigned int cpu, struct pt_regs *regs);
-#elif !defined(CONFIG_HAVE_NMI_WATCHDOG)
-static inline void arch_touch_nmi_watchdog(void) { }
#endif
#if defined(CONFIG_HARDLOCKUP_DETECTOR_PERF)