clockevents: Restructure clock_event_device members

Group the hot path members of struct clock_event_device together so we
have a better cache line footprint. Make it cacheline aligned.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/%3C20110518210136.223607682%40linutronix.de%3E

1 files changed, 23 insertions, 22 deletions

diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index fc53492b6ad7..9466eebc8e19 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -56,46 +56,47 @@ enum clock_event_nofitiers {
 
 /**
  * struct clock_event_device - clock event device descriptor
- * @name:               ptr to clock event name
- * @features:           features
+ * @event_handler:      Assigned by the framework to be called by the low
+ *                      level handler of the event source
+ * @set_next_event:     set next event function
+ * @next_event:         local storage for the next event in oneshot mode
  * @max_delta_ns:       maximum delta value in ns
  * @min_delta_ns:       minimum delta value in ns
  * @mult:               nanosecond to cycles multiplier
  * @shift:              nanoseconds to cycles divisor (power of two)
+ * @mode:               operating mode assigned by the management code
+ * @features:           features
+ * @retries:            number of forced programming retries
+ * @set_mode:           set mode function
+ * @broadcast:          function to broadcast events
+ * @name:               ptr to clock event name
  * @rating:             variable to rate clock event devices
  * @irq:                IRQ number (only for non CPU local devices)
  * @cpumask:            cpumask to indicate for which CPUs this device works
- * @set_next_event:     set next event function
- * @set_mode:           set mode function
- * @event_handler:      Assigned by the framework to be called by the low
- *                      level handler of the event source
- * @broadcast:          function to broadcast events
  * @list:               list head for the management code
- * @mode:               operating mode assigned by the management code
- * @next_event:         local storage for the next event in oneshot mode
- * @retries:            number of forced programming retries
  */
 struct clock_event_device {
-        const char              *name;
-        unsigned int            features;
+        void                    (*event_handler)(struct clock_event_device *);
+        int                     (*set_next_event)(unsigned long evt,
+                                                  struct clock_event_device *);
+        ktime_t                 next_event;
         u64                     max_delta_ns;
         u64                     min_delta_ns;
         u32                     mult;
         u32                     shift;
+        enum clock_event_mode   mode;
+        unsigned int            features;
+        unsigned long           retries;
+
+        void                    (*broadcast)(const struct cpumask *mask);
+        void                    (*set_mode)(enum clock_event_mode mode,
+                                            struct clock_event_device *);
+        const char              *name;
         int                     rating;
         int                     irq;
         const struct cpumask    *cpumask;
-        int                     (*set_next_event)(unsigned long evt,
-                                                  struct clock_event_device *);
-        void                    (*set_mode)(enum clock_event_mode mode,
-                                            struct clock_event_device *);
-        void                    (*event_handler)(struct clock_event_device *);
-        void                    (*broadcast)(const struct cpumask *mask);
         struct list_head        list;
-        enum clock_event_mode   mode;
-        ktime_t                 next_event;
-        unsigned long           retries;
-};
+} ____cacheline_aligned;
 
 /*
  * Calculate a multiplication factor for scaled math, which is used to convert