Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  itimer: Fix the itimer trace print format
  hrtimer: move timer stats helper functions to hrtimer.c
  hrtimer: Tune hrtimer_interrupt hang logic

2 files changed, 13 insertions, 51 deletions

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 9bace4b9f4fe..af634e95871d 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -162,10 +162,11 @@ struct hrtimer_clock_base {
  * @expires_next:       absolute time of the next event which was scheduled
  *                      via clock_set_next_event()
  * @hres_active:        State of high resolution mode
- * @check_clocks:       Indictator, when set evaluate time source and clock
- *                      event devices whether high resolution mode can be
- *                      activated.
- * @nr_events:          Total number of timer interrupt events
+ * @hang_detected:      The last hrtimer interrupt detected a hang
+ * @nr_events:          Total number of hrtimer interrupt events
+ * @nr_retries:         Total number of hrtimer interrupt retries
+ * @nr_hangs:           Total number of hrtimer interrupt hangs
+ * @max_hang_time:      Maximum time spent in hrtimer_interrupt
  */
 struct hrtimer_cpu_base {
         spinlock_t                      lock;
@@ -173,7 +174,11 @@ struct hrtimer_cpu_base {
 #ifdef CONFIG_HIGH_RES_TIMERS
         ktime_t                         expires_next;
         int                             hres_active;
+        int                             hang_detected;
         unsigned long                   nr_events;
+        unsigned long                   nr_retries;
+        unsigned long                   nr_hangs;
+        ktime_t                         max_hang_time;
 #endif
 };
 
@@ -435,47 +440,4 @@ extern u64 ktime_divns(const ktime_t kt, s64 div);
 /* Show pending timers: */
 extern void sysrq_timer_list_show(void);
 
-/*
- * Timer-statistics info:
- */
-#ifdef CONFIG_TIMER_STATS
-
-extern void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
-                                     void *timerf, char *comm,
-                                     unsigned int timer_flag);
-
-static inline void timer_stats_account_hrtimer(struct hrtimer *timer)
-{
-        if (likely(!timer_stats_active))
-                return;
-        timer_stats_update_stats(timer, timer->start_pid, timer->start_site,
-                                 timer->function, timer->start_comm, 0);
-}
-
-extern void __timer_stats_hrtimer_set_start_info(struct hrtimer *timer,
-                                                 void *addr);
-
-static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer)
-{
-        __timer_stats_hrtimer_set_start_info(timer, __builtin_return_address(0));
-}
-
-static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer)
-{
-        timer->start_site = NULL;
-}
-#else
-static inline void timer_stats_account_hrtimer(struct hrtimer *timer)
-{
-}
-
-static inline void timer_stats_hrtimer_set_start_info(struct hrtimer *timer)
-{
-}
-
-static inline void timer_stats_hrtimer_clear_start_info(struct hrtimer *timer)
-{
-}
-#endif
-
 #endif
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
index e5ce87a0498d..9496b965d62a 100644
--- a/include/trace/events/timer.h
+++ b/include/trace/events/timer.h
@@ -301,8 +301,8 @@ TRACE_EVENT(itimer_state,
                 __entry->interval_usec  = value->it_interval.tv_usec;
         ),
 
-        TP_printk("which=%d expires=%lu it_value=%lu.%lu it_interval=%lu.%lu",
-                  __entry->which, __entry->expires,
+        TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
+                  __entry->which, (unsigned long long)__entry->expires,
                   __entry->value_sec, __entry->value_usec,
                   __entry->interval_sec, __entry->interval_usec)
 );
@@ -331,8 +331,8 @@ TRACE_EVENT(itimer_expire,
                 __entry->pid    = pid_nr(pid);
         ),
 
-            TP_printk("which=%d pid=%d now=%lu", __entry->which,
-                      (int) __entry->pid, __entry->now)
+        TP_printk("which=%d pid=%d now=%llu", __entry->which,
+                  (int) __entry->pid, (unsigned long long)__entry->now)
 );
 
 #endif /*  _TRACE_TIMER_H */