diff options
Diffstat (limited to 'arch/x86/kernel/apic/hw_nmi.c')
| -rw-r--r-- | arch/x86/kernel/apic/hw_nmi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c index 7788ce643bf4..016f4263fad4 100644 --- a/arch/x86/kernel/apic/hw_nmi.c +++ b/arch/x86/kernel/apic/hw_nmi.c @@ -18,8 +18,16 @@ #include <linux/nmi.h> #include <linux/module.h> #include <linux/delay.h> +#include <linux/perf_event.h> #ifdef CONFIG_HARDLOCKUP_DETECTOR +int hw_nmi_get_event(void) +{ + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) + return PERF_COUNT_HW_REF_CPU_CYCLES; + return PERF_COUNT_HW_CPU_CYCLES; +} + u64 hw_nmi_get_sample_period(int watchdog_thresh) { return (u64)(cpu_khz) * 1000 * watchdog_thresh; |