perf: Add context field to perf_event

[deliverable/linux.git] / kernel / watchdog.c

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 3d0c56ad47929c91795ac7db81d97acbb1e28cf9..a933e3a0398be5f40aff50916ee67018b7bb580e 100644 (file)
--- 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,
@@ -209,7 +211,7 @@ static struct perf_event_attr wd_hw_attr = {
 };
 
 /* Callback function for perf event subsystem */
-static void watchdog_overflow_callback(struct perf_event *event, int nmi,
+static void watchdog_overflow_callback(struct perf_event *event,
                 struct perf_sample_data *data,
                 struct pt_regs *regs)
 {
@@ -368,10 +370,12 @@ 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);
-       event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback);
+       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, NULL);
        if (!IS_ERR(event)) {
                printk(KERN_INFO "NMI watchdog enabled, takes one hw-pmu counter.\n");
                goto out_save;