mirror of
https://github.com/torvalds/linux.git
synced 2024-11-17 17:41:44 +00:00
b6ecfa9273
In case mod_virt_timer is used to add a non pending timer the timer is always added as a one-shot timer. If mod_virt_timer is used for periodic timers they may therfore be degraded to one-shot timers. Add mod_virt_timer_periodic to the interface to allow safe re-programming of the interval value. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/*
|
|
* include/asm-s390/timer.h
|
|
*
|
|
* (C) Copyright IBM Corp. 2003,2006
|
|
* Virtual CPU timer
|
|
*
|
|
* Author: Jan Glauber (jang@de.ibm.com)
|
|
*/
|
|
|
|
#ifndef _ASM_S390_TIMER_H
|
|
#define _ASM_S390_TIMER_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/timer.h>
|
|
|
|
#define VTIMER_MAX_SLICE (0x7ffffffffffff000LL)
|
|
|
|
struct vtimer_list {
|
|
struct list_head entry;
|
|
|
|
int cpu;
|
|
__u64 expires;
|
|
__u64 interval;
|
|
|
|
void (*function)(unsigned long);
|
|
unsigned long data;
|
|
};
|
|
|
|
/* the vtimer value will wrap after ca. 71 years */
|
|
struct vtimer_queue {
|
|
struct list_head list;
|
|
spinlock_t lock;
|
|
__u64 timer; /* last programmed timer */
|
|
__u64 elapsed; /* elapsed time of timer expire values */
|
|
__u64 idle; /* temp var for idle */
|
|
int do_spt; /* =1: reprogram cpu timer in idle */
|
|
};
|
|
|
|
extern void init_virt_timer(struct vtimer_list *timer);
|
|
extern void add_virt_timer(void *new);
|
|
extern void add_virt_timer_periodic(void *new);
|
|
extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
|
|
extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
|
|
extern int del_virt_timer(struct vtimer_list *timer);
|
|
|
|
extern void init_cpu_vtimer(void);
|
|
extern void vtime_init(void);
|
|
|
|
extern void vtime_stop_cpu(void);
|
|
extern void vtime_start_leave(void);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_S390_TIMER_H */
|