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

* 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: hpet: Cleanup the clockevents init and register code
  x86: Convert PIT to clockevents_config_and_register()
  clockevents: Provide interface to reconfigure an active clock event device
  clockevents: Provide combined configure and register function
  clockevents: Restructure clock_event_device members
  clocksource: Get rid of the hardcoded 5 seconds sleep time limit
  clocksource: Restructure clocksource struct members

2 files changed, 48 insertions, 40 deletions

diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index fc53492..d6733e2 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -56,46 +56,52 @@ 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
+ * @min_delta_ticks:	minimum delta value in ticks stored for reconfiguration
+ * @max_delta_ticks:	maximum delta value in ticks stored for reconfiguration
+ * @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 *);
+	unsigned long		min_delta_ticks;
+	unsigned long		max_delta_ticks;
+
+	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
@@ -122,6 +128,12 @@ extern u64 clockevent_delta2ns(unsigned long latch,
 			       struct clock_event_device *evt);
 extern void clockevents_register_device(struct clock_event_device *dev);
 
+extern void clockevents_config_and_register(struct clock_event_device *dev,
+					    u32 freq, unsigned long min_delta,
+					    unsigned long max_delta);
+
+extern int clockevents_update_freq(struct clock_event_device *ce, u32 freq);
+
 extern void clockevents_exchange_device(struct clock_event_device *old,
 					struct clock_event_device *new);
 extern void clockevents_set_mode(struct clock_event_device *dev,
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 0fb0b7e..c918fbd 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -159,42 +159,38 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
  */
 struct clocksource {
 	/*
-	 * First part of structure is read mostly
+	 * Hotpath data, fits in a single cache line when the
+	 * clocksource itself is cacheline aligned.
 	 */
-	const char *name;
-	struct list_head list;
-	int rating;
 	cycle_t (*read)(struct clocksource *cs);
-	int (*enable)(struct clocksource *cs);
-	void (*disable)(struct clocksource *cs);
+	cycle_t cycle_last;
 	cycle_t mask;
 	u32 mult;
 	u32 shift;
 	u64 max_idle_ns;
-	unsigned long flags;
-	cycle_t (*vread)(void);
-	void (*suspend)(struct clocksource *cs);
-	void (*resume)(struct clocksource *cs);
+
 #ifdef CONFIG_IA64
 	void *fsys_mmio;        /* used by fsyscall asm code */
 #define CLKSRC_FSYS_MMIO_SET(mmio, addr)      ((mmio) = (addr))
 #else
 #define CLKSRC_FSYS_MMIO_SET(mmio, addr)      do { } while (0)
 #endif
-
-	/*
-	 * Second part is written at each timer interrupt
-	 * Keep it in a different cache line to dirty no
-	 * more than one cache line.
-	 */
-	cycle_t cycle_last ____cacheline_aligned_in_smp;
+	const char *name;
+	struct list_head list;
+	int rating;
+	cycle_t (*vread)(void);
+	int (*enable)(struct clocksource *cs);
+	void (*disable)(struct clocksource *cs);
+	unsigned long flags;
+	void (*suspend)(struct clocksource *cs);
+	void (*resume)(struct clocksource *cs);
 
 #ifdef CONFIG_CLOCKSOURCE_WATCHDOG
 	/* Watchdog related data, used by the framework */
 	struct list_head wd_list;
 	cycle_t wd_last;
 #endif
-};
+} ____cacheline_aligned;
 
 /*
  * Clock source flags bits::