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Commit 164d44fd authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clocksource: Add clocksource_register_hz/khz interface
  posix-cpu-timers: Optimize run_posix_cpu_timers()
  time: Remove xtime_cache
  mqueue: Convert message queue timeout to use hrtimers
  hrtimers: Provide schedule_hrtimeout for CLOCK_REALTIME
  timers: Introduce the concept of timer slack for legacy timers
  ntp: Remove tickadj
  ntp: Make time_adjust static
  time: Add xtime, wall_to_monotonic to feature-removal-schedule
  timer: Try to survive timer callback preempt_count leak
  timer: Split out timer function call
  timer: Print function name for timer callbacks modifying preemption count
  time: Clean up warp_clock()
  cpu-timers: Avoid iterating over all threads in fastpath_timer_check()
  cpu-timers: Change SIGEV_NONE timer implementation
  cpu-timers: Return correct previous timer reload value
  cpu-timers: Cleanup arm_timer()
  cpu-timers: Simplify RLIMIT_CPU handling
parents 5bfec46b d7e81c26

Documentation/feature-removal-schedule.txt

+10 −0
Original line number Diff line number Diff line
@@ -541,6 +541,16 @@ Who: Avi Kivity <avi@redhat.com> 


----------------------------



What:	xtime, wall_to_monotonic

When:	2.6.36+

Files:	kernel/time/timekeeping.c include/linux/time.h

Why:	Cleaning up timekeeping internal values. Please use

	existing timekeeping accessor functions to access

	the equivalent functionality.

Who:	John Stultz <johnstul@us.ibm.com>



----------------------------



What:	KVM kernel-allocated memory slots

When:	July 2010

Why:	Since 2.6.25, kvm supports user-allocated memory slots, which are

include/linux/clocksource.h

+18 −1
Original line number Diff line number Diff line
@@ -273,7 +273,6 @@ static inline s64 clocksource_cyc2ns(cycle_t cycles, u32 mult, u32 shift) 
}





/* used to install a new clocksource */

extern int clocksource_register(struct clocksource*);

extern void clocksource_unregister(struct clocksource*);

extern void clocksource_touch_watchdog(void);
@@ -287,6 +286,24 @@ extern void clocksource_mark_unstable(struct clocksource *cs); 
extern void

clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 minsec);



/*

 * Don't call __clocksource_register_scale directly, use

 * clocksource_register_hz/khz

 */

extern int

__clocksource_register_scale(struct clocksource *cs, u32 scale, u32 freq);



static inline int clocksource_register_hz(struct clocksource *cs, u32 hz)

{

	return __clocksource_register_scale(cs, 1, hz);

}



static inline int clocksource_register_khz(struct clocksource *cs, u32 khz)

{

	return __clocksource_register_scale(cs, 1000, khz);

}





static inline void

clocksource_calc_mult_shift(struct clocksource *cs, u32 freq, u32 minsec)

{

include/linux/hrtimer.h

+2 −0
Original line number Diff line number Diff line
@@ -422,6 +422,8 @@ extern void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, 


extern int schedule_hrtimeout_range(ktime_t *expires, unsigned long delta,

						const enum hrtimer_mode mode);

extern int schedule_hrtimeout_range_clock(ktime_t *expires,

		unsigned long delta, const enum hrtimer_mode mode, int clock);

extern int schedule_hrtimeout(ktime_t *expires, const enum hrtimer_mode mode);



/* Soft interrupt function to run the hrtimer queues: */

include/linux/time.h

+0 −1
Original line number Diff line number Diff line
@@ -150,7 +150,6 @@ extern struct timespec timespec_trunc(struct timespec t, unsigned gran); 
extern int timekeeping_valid_for_hres(void);

extern u64 timekeeping_max_deferment(void);

extern void update_wall_time(void);

extern void update_xtime_cache(u64 nsec);

extern void timekeeping_leap_insert(int leapsecond);



struct tms;

include/linux/timer.h

+9 −1
Original line number Diff line number Diff line
@@ -10,13 +10,19 @@ 
struct tvec_base;



struct timer_list {

	/*

	 * All fields that change during normal runtime grouped to the

	 * same cacheline

	 */

	struct list_head entry;

	unsigned long expires;

	struct tvec_base *base;



	void (*function)(unsigned long);

	unsigned long data;



	struct tvec_base *base;

	int slack;



#ifdef CONFIG_TIMER_STATS

	void *start_site;

	char start_comm[16];
@@ -165,6 +171,8 @@ extern int mod_timer(struct timer_list *timer, unsigned long expires); 
extern int mod_timer_pending(struct timer_list *timer, unsigned long expires);

extern int mod_timer_pinned(struct timer_list *timer, unsigned long expires);



extern void set_timer_slack(struct timer_list *time, int slack_hz);



#define TIMER_NOT_PINNED	0

#define TIMER_PINNED		1

/*