kernel-ark/include/asm-cris/fasttimer.h
Jesper Nilsson d8e5219f9f CRISv10 improve and bugfix fasttimer
Improve and bugfix CRIS v10 fast timers.

- irq_handler_t now only takes two arguments.
- Keep interrupts disabled as long as we have a reference to the
  fasttimer list and only enable them while doing the callback.
  del_fast_timer may be called from other interrupt context.
- Fix bug where debug code could return without calling local_irq_restore.
- Use jiffies instead of usec (change from struct timeval to fasttime_t).
- Don't initialize static variables to zero.
- Remove obsolete #ifndef DECLARE_WAITQUEUE code.
- fast_timer_init should be __initcall.
- Change status/debug variables to unsigned.
- Remove CVS log and CVS id.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-14 18:45:47 -08:00

48 lines
1.1 KiB
C

/*
* linux/include/asm-cris/fasttimer.h
*
* Fast timers for ETRAX100LX
* Copyright (C) 2000-2007 Axis Communications AB
*/
#include <linux/time.h> /* struct timeval */
#include <linux/timex.h>
#ifdef CONFIG_ETRAX_FAST_TIMER
typedef void fast_timer_function_type(unsigned long);
struct fasttime_t {
unsigned long tv_jiff; /* jiffies */
unsigned long tv_usec; /* microseconds */
};
struct fast_timer{ /* Close to timer_list */
struct fast_timer *next;
struct fast_timer *prev;
struct fasttime_t tv_set;
struct fasttime_t tv_expires;
unsigned long delay_us;
fast_timer_function_type *function;
unsigned long data;
const char *name;
};
extern struct fast_timer *fast_timer_list;
void start_one_shot_timer(struct fast_timer *t,
fast_timer_function_type *function,
unsigned long data,
unsigned long delay_us,
const char *name);
int del_fast_timer(struct fast_timer * t);
/* return 1 if deleted */
void schedule_usleep(unsigned long us);
int fast_timer_init(void);
#endif