diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/watchdog_perf.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/watchdog_perf.c b/kernel/watchdog_perf.c index d577c4a8321e..59c1d86a73a2 100644 --- a/kernel/watchdog_perf.c +++ b/kernel/watchdog_perf.c @@ -75,11 +75,15 @@ static bool watchdog_check_timestamp(void) __this_cpu_write(last_timestamp, now); return true; } -#else -static inline bool watchdog_check_timestamp(void) + +static void watchdog_init_timestamp(void) { - return true; + __this_cpu_write(nmi_rearmed, 0); + __this_cpu_write(last_timestamp, ktime_get_mono_fast_ns()); } +#else +static inline bool watchdog_check_timestamp(void) { return true; } +static inline void watchdog_init_timestamp(void) { } #endif static struct perf_event_attr wd_hw_attr = { @@ -161,6 +165,7 @@ void watchdog_hardlockup_enable(unsigned int cpu) if (!atomic_fetch_inc(&watchdog_cpus)) pr_info("Enabled. Permanently consumes one hw-PMU counter.\n"); + watchdog_init_timestamp(); perf_event_enable(this_cpu_read(watchdog_ev)); } |