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| author | Paul Mundt <lethal@linux-sh.org> | 2006-12-01 13:23:47 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:40 +0900 |
| commit | bd156147eb63ae525e0ac67868e41a808f03c532 (patch) | |
| tree | 8774cf4f3297c94c10583f6331b5b17e0322f0db /include | |
| parent | 1d118562c2067a42d0e8f70671a4ce27d7c6ffee (diff) | |
| download | linux-bd156147eb63ae525e0ac67868e41a808f03c532.tar.gz linux-bd156147eb63ae525e0ac67868e41a808f03c532.tar.bz2 linux-bd156147eb63ae525e0ac67868e41a808f03c532.zip | |
sh: dyntick infrastructure.
This adds basic NO_IDLE_HZ support to the SH timer API so timers
are able to wire it up. Taken from the ARM version, as it fit in
to our API with very few changes needed.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sh/timer.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-sh/timer.h b/include/asm-sh/timer.h index 5a014bca9d58..17b5e76a4c31 100644 --- a/include/asm-sh/timer.h +++ b/include/asm-sh/timer.h @@ -18,8 +18,29 @@ struct sys_timer { struct sys_device dev; struct sys_timer_ops *ops; + +#ifdef CONFIG_NO_IDLE_HZ + struct dyn_tick_timer *dyn_tick; +#endif }; +#ifdef CONFIG_NO_IDLE_HZ +#define DYN_TICK_ENABLED (1 << 1) + +struct dyn_tick_timer { + spinlock_t lock; + unsigned int state; /* Current state */ + int (*enable)(void); /* Enables dynamic tick */ + int (*disable)(void); /* Disables dynamic tick */ + void (*reprogram)(unsigned long); /* Reprograms the timer */ + int (*handler)(int, void *); +}; + +void timer_dyn_reprogram(void); +#else +#define timer_dyn_reprogram() do { } while (0) +#endif + #define TICK_SIZE (tick_nsec / 1000) extern struct sys_timer tmu_timer, cmt_timer, mtu2_timer; |