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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2012 - 2014 Cisco Systems
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
*/
#ifndef __TIMER_INTERNAL_H__
#define __TIMER_INTERNAL_H__
#include <linux/list.h>
#include <asm/bug.h>
#include <shared/timetravel.h>
#define TIMER_MULTIPLIER 256
#define TIMER_MIN_DELTA 500
#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT
struct time_travel_event {
unsigned long long time;
void (*fn)(struct time_travel_event *d);
struct list_head list;
bool pending, onstack;
};
void time_travel_sleep(void);
static inline void
time_travel_set_event_fn(struct time_travel_event *e,
void (*fn)(struct time_travel_event *d))
{
e->fn = fn;
}
void __time_travel_propagate_time(void);
static inline void time_travel_propagate_time(void)
{
if (time_travel_mode == TT_MODE_EXTERNAL)
__time_travel_propagate_time();
}
void __time_travel_wait_readable(int fd);
static inline void time_travel_wait_readable(int fd)
{
if (time_travel_mode == TT_MODE_EXTERNAL)
__time_travel_wait_readable(fd);
}
void time_travel_add_irq_event(struct time_travel_event *e);
void time_travel_add_event_rel(struct time_travel_event *e,
unsigned long long delay_ns);
bool time_travel_del_event(struct time_travel_event *e);
#else
struct time_travel_event {
};
static inline void time_travel_sleep(void)
{
}
/* this is a macro so the event/function need not exist */
#define time_travel_set_event_fn(e, fn) do {} while (0)
static inline void time_travel_propagate_time(void)
{
}
static inline void time_travel_wait_readable(int fd)
{
}
static inline void time_travel_add_irq_event(struct time_travel_event *e)
{
WARN_ON(1);
}
/*
* not inlines so the data structure need not exist,
* cause linker failures
*/
extern void time_travel_not_configured(void);
#define time_travel_add_event_rel(...) time_travel_not_configured()
#define time_travel_del_event(...) time_travel_not_configured()
#endif /* CONFIG_UML_TIME_TRAVEL_SUPPORT */
/*
* Without CONFIG_UML_TIME_TRAVEL_SUPPORT this is a linker error if used,
* which is intentional since we really shouldn't link it in that case.
*/
void time_travel_ndelay(unsigned long nsec);
#endif /* __TIMER_INTERNAL_H__ */