timer.h File Reference

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Classes
struct	timer_list

Macros
#define	HZ   250 /* ticks per second — tune to your timer IRQ */
#define	msecs_to_jiffies(ms)   ((ms) * HZ / 1000)
#define	jiffies_to_msecs(j)   ((j) * 1000 / HZ)
#define	time_after(a, b)   ((long)((b) - (a)) < 0)
#define	time_before(a, b)   time_after(b, a)
#define	time_after_eq(a, b)   ((long)((a) - (b)) >= 0)
#define	timer_setup(t, fn, flags)
#define	setup_timer(t, fn, data)
#define	from_timer(var, callback_timer, timer_fieldname)    container_of(callback_timer, typeof(*var), timer_fieldname)

Variables
volatile unsigned long	jiffies

Macro Definition Documentation

from_timer

#define from_timer	(		var,
			callback_timer,
			timer_fieldname
	)		container_of(callback_timer, typeof(*var), timer_fieldname)

HZ

#define HZ   250 /* ticks per second — tune to your timer IRQ */

jiffies_to_msecs

#define jiffies_to_msecs

(

j

)

((j) * 1000 / HZ)

msecs_to_jiffies

#define msecs_to_jiffies

(

ms

)

((ms) * HZ / 1000)

setup_timer

#define setup_timer	(		t,
			fn,
			data
	)

Value:

    do { \
    (t)->function = (void(*)(struct timer_list*))(fn); \
    (t)->data     = (void*)(data);     \
    (t)->pending  = 0;                 \
} while (0)

time_after

#define time_after	(		a,
			b
	)		((long)((b) - (a)) < 0)

time_after_eq

#define time_after_eq	(		a,
			b
	)		((long)((a) - (b)) >= 0)

time_before

#define time_before	(		a,
			b
	)		time_after(b, a)

timer_setup

#define timer_setup	(		t,
			fn,
			flags
	)

Value:

    do { \
    (t)->function = (fn);              \
    (t)->pending  = 0;                 \
    (t)->data     = NULL;              \
    (t)->expires  = 0;                 \
} while (0)

Variable Documentation

jiffies

volatile unsigned long jiffies

extern