From 23637d477c1f53acbb176a02c241d60a25888fae Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 15 May 2010 23:15:20 +0200 Subject: lockup_detector: Introduce CONFIG_HARDLOCKUP_DETECTOR This new config is deemed to simplify even more the lockup detector dependencies and can make it easier to bring a smooth sorting between archs that support the new generic lockup detector and those that still have their own, especially for those that are in the middle of this migration. Instead of checking whether we have CONFIG_LOCKUP_DETECTOR + CONFIG_PERF_EVENTS_NMI each time an arch wants to know if it needs to build its own lockup detector, take a shortcut with this new config. It is enabled only if the hardlockup detection part of the whole lockup detector is on. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Don Zickus Cc: Cyrill Gorcunov --- kernel/watchdog.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'kernel/watchdog.c') diff --git a/kernel/watchdog.c b/kernel/watchdog.c index be5e74e62be6..83fb63155cbc 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) -- cgit v1.2.2