litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

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author	Linus Torvalds <torvalds@g5.osdl.org>	2006-10-06 14:08:57 -0400
committer	Linus Torvalds <torvalds@g5.osdl.org>	2006-10-06 14:08:57 -0400
commit	428929a234d2c4b8a6d0145d0dcf687fcfa27325 (patch)
tree	dd097eeabbd41c4713be5ea7663f52399183fd84 /arch/sparc
parent	0cd61b68c340a4f901a06e8bb5e0dea4353161c0 (diff)
parent	8c1addbc752660e95bbf2128d66b8e5bb38d5fc7 (diff)

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix breakage from irq change

Diffstat (limited to 'arch/sparc')

0 files changed, 0 insertions, 0 deletions

t_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; u64 max_delta_ns; u64 min_delta_ns; u32 mult; u32 shift; 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; }; /* * Calculate a multiplication factor for scaled math, which is used to convert * nanoseconds based values to clock ticks: * * clock_ticks = (nanoseconds * factor) >> shift. * * div_sc is the rearranged equation to calculate a factor from a given clock * ticks / nanoseconds ratio: * * factor = (clock_ticks << shift) / nanoseconds */ static inline unsigned long div_sc(unsigned long ticks, unsigned long nsec, int shift) { uint64_t tmp = ((uint64_t)ticks) << shift; do_div(tmp, nsec); return (unsigned long) tmp; } /* Clock event layer functions */ 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_exchange_device(struct clock_event_device *old, struct clock_event_device *new); extern void clockevents_set_mode(struct clock_event_device *dev, enum clock_event_mode mode); extern int clockevents_register_notifier(struct notifier_block *nb); extern int clockevents_program_event(struct clock_event_device *dev, ktime_t expires, ktime_t now); extern void clockevents_handle_noop(struct clock_event_device *dev); static inline void clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec) { return clocks_calc_mult_shift(&ce->mult, &ce->shift, NSEC_PER_SEC, freq, minsec); } #ifdef CONFIG_GENERIC_CLOCKEVENTS extern void clockevents_notify(unsigned long reason, void *arg); #else # define clockevents_notify(reason, arg) do { } while (0) #endif #else /* CONFIG_GENERIC_CLOCKEVENTS_BUILD */ #define clockevents_notify(reason, arg) do { } while (0) #endif #endif


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