diff options
| -rw-r--r-- | arch/Kconfig | 4 | ||||
| -rw-r--r-- | init/Kconfig | 7 | ||||
| -rw-r--r-- | kernel/watchdog.c | 14 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 3 |
4 files changed, 14 insertions, 14 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 89b0efb5094..35084f28008 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -147,5 +147,9 @@ config HAVE_USER_RETURN_NOTIFIER config HAVE_PERF_EVENTS_NMI bool + help + System hardware can generate an NMI using the perf event + subsystem. Also has support for calculating CPU cycle events + to determine how many clock cycles in a given period. source "kernel/gcov/Kconfig" diff --git a/init/Kconfig b/init/Kconfig index ab733c32292..eb77e8ccde1 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -942,13 +942,6 @@ config PERF_USE_VMALLOC help See tools/perf/design.txt for details -config PERF_EVENTS_NMI - def_bool PERF_EVENTS && HAVE_PERF_EVENTS_NMI - help - System hardware can generate an NMI using the perf event - subsystem. Also has support for calculating CPU cycle events - to determine how many clock cycles in a given period. - menu "Kernel Performance Events And Counters" config PERF_EVENTS diff --git a/kernel/watchdog.c b/kernel/watchdog.c index be5e74e62be..83fb63155cb 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -37,7 +37,7 @@ static DEFINE_PER_CPU(struct hrtimer, watchdog_hrtimer); static DEFINE_PER_CPU(bool, softlockup_touch_sync); static DEFINE_PER_CPU(bool, hard_watchdog_warn); static DEFINE_PER_CPU(bool, soft_watchdog_warn); -#ifdef CONFIG_PERF_EVENTS_NMI +#ifdef CONFIG_HARDLOCKUP_DETECTOR static DEFINE_PER_CPU(unsigned long, hrtimer_interrupts); static DEFINE_PER_CPU(unsigned long, hrtimer_interrupts_saved); static DEFINE_PER_CPU(struct perf_event *, watchdog_ev); @@ -51,7 +51,7 @@ static int __initdata no_watchdog; /* * Should we panic when a soft-lockup or hard-lockup occurs: */ -#ifdef CONFIG_PERF_EVENTS_NMI +#ifdef CONFIG_HARDLOCKUP_DETECTOR static int hardlockup_panic; static int __init hardlockup_panic_setup(char *str) @@ -152,7 +152,7 @@ void touch_softlockup_watchdog_sync(void) __raw_get_cpu_var(watchdog_touch_ts) = 0; } -#ifdef CONFIG_PERF_EVENTS_NMI +#ifdef CONFIG_HARDLOCKUP_DETECTOR /* watchdog detector functions */ static int is_hardlockup(int cpu) { @@ -189,7 +189,7 @@ static struct notifier_block panic_block = { .notifier_call = watchdog_panic, }; -#ifdef CONFIG_PERF_EVENTS_NMI +#ifdef CONFIG_HARDLOCKUP_DETECTOR static struct perf_event_attr wd_hw_attr = { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES, @@ -239,7 +239,7 @@ static void watchdog_interrupt_count(void) } #else static inline void watchdog_interrupt_count(void) { return; } -#endif /* CONFIG_PERF_EVENTS_NMI */ +#endif /* CONFIG_HARDLOCKUP_DETECTOR */ /* watchdog kicker functions */ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) @@ -342,7 +342,7 @@ static int watchdog(void *__bind_cpu) } -#ifdef CONFIG_PERF_EVENTS_NMI +#ifdef CONFIG_HARDLOCKUP_DETECTOR static int watchdog_nmi_enable(int cpu) { struct perf_event_attr *wd_attr; @@ -393,7 +393,7 @@ static void watchdog_nmi_disable(int cpu) #else static int watchdog_nmi_enable(int cpu) { return 0; } static void watchdog_nmi_disable(int cpu) { return; } -#endif /* CONFIG_PERF_EVENTS_NMI */ +#endif /* CONFIG_HARDLOCKUP_DETECTOR */ /* prepare/enable/disable routines */ static int watchdog_prepare_cpu(int cpu) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 3a18b0b856c..e65e47d5c5e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -174,6 +174,9 @@ config LOCKUP_DETECTOR generate interrupts and kick the watchdog task every 10-12 seconds. An NMI is generated every 60 seconds or so to check for hardlockups. +config HARDLOCKUP_DETECTOR + def_bool LOCKUP_DETECTOR && PERF_EVENTS && HAVE_PERF_EVENTS_NMI + config BOOTPARAM_SOFTLOCKUP_PANIC bool "Panic (Reboot) On Soft Lockups" depends on LOCKUP_DETECTOR |