diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/watchdog.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 3d0c56ad479..752b75ba662 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -200,6 +200,8 @@ static int is_softlockup(unsigned long touch_ts) } #ifdef CONFIG_HARDLOCKUP_DETECTOR +void __weak hw_nmi_watchdog_set_attr(struct perf_event_attr *wd_attr) { } + static struct perf_event_attr wd_hw_attr = { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES, @@ -368,9 +370,11 @@ static int watchdog_nmi_enable(int cpu) if (event != NULL) goto out_enable; - /* Try to register using hardware perf events */ wd_attr = &wd_hw_attr; wd_attr->sample_period = hw_nmi_get_sample_period(watchdog_thresh); + hw_nmi_watchdog_set_attr(wd_attr); + + /* Try to register using hardware perf events */ event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback); if (!IS_ERR(event)) { printk(KERN_INFO "NMI watchdog enabled, takes one hw-pmu counter.\n"); |