Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / kernel / watchdog.c

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 0d53c8e..2feb287 100644 (file)
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -122,7 +122,7 @@ static void __touch_watchdog(void)
 
 void touch_softlockup_watchdog(void)
 {
-       __get_cpu_var(watchdog_touch_ts) = 0;
+       __raw_get_cpu_var(watchdog_touch_ts) = 0;
 }
 EXPORT_SYMBOL(touch_softlockup_watchdog);
 
@@ -142,7 +142,14 @@ void touch_all_softlockup_watchdogs(void)
 #ifdef CONFIG_HARDLOCKUP_DETECTOR
 void touch_nmi_watchdog(void)
 {
-       __get_cpu_var(watchdog_nmi_touch) = true;
+       if (watchdog_enabled) {
+               unsigned cpu;
+
+               for_each_present_cpu(cpu) {
+                       if (per_cpu(watchdog_nmi_touch, cpu) != true)
+                               per_cpu(watchdog_nmi_touch, cpu) = true;
+               }
+       }
        touch_softlockup_watchdog();
 }
 EXPORT_SYMBOL(touch_nmi_watchdog);
@@ -202,7 +209,7 @@ static struct perf_event_attr wd_hw_attr = {
 };
 
 /* Callback function for perf event subsystem */
-void watchdog_overflow_callback(struct perf_event *event, int nmi,
+static void watchdog_overflow_callback(struct perf_event *event, int nmi,
                 struct perf_sample_data *data,
                 struct pt_regs *regs)
 {
@@ -433,6 +440,9 @@ static int watchdog_enable(int cpu)
                wake_up_process(p);
        }
 
+       /* if any cpu succeeds, watchdog is considered enabled for the system */
+       watchdog_enabled = 1;
+
        return 0;
 }
 
@@ -455,9 +465,6 @@ static void watchdog_disable(int cpu)
                per_cpu(softlockup_watchdog, cpu) = NULL;
                kthread_stop(p);
        }
-
-       /* if any cpu succeeds, watchdog is considered enabled for the system */
-       watchdog_enabled = 1;
 }
 
 static void watchdog_enable_all_cpus(void)