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#ifndef _BACKPORT_TIMER_H
#define _BACKPORT_TIMER_H
#include_next <linux/timer.h>
#ifndef setup_deferrable_timer
/*
* The TIMER_DEFERRABLE flag has not been around since 3.0 so
* two different backports are needed here.
*/
#ifdef TIMER_DEFERRABLE
#define setup_deferrable_timer(timer, fn, data) \
__setup_timer((timer), (fn), (data), TIMER_DEFERRABLE)
#else
static inline void setup_deferrable_timer_key(struct timer_list *timer,
const char *name,
struct lock_class_key *key,
void (*func)(unsigned long),
unsigned long data)
{
timer->function = func;
timer->data = data;
init_timer_deferrable_key(timer, name, key);
}
#define setup_deferrable_timer(timer, fn, data) \
do { \
static struct lock_class_key __key; \
setup_deferrable_timer_key((timer), #timer, &__key, \
(fn), (data)); \
} while (0)
#endif
#endif
#ifndef TIMER_DEFERRABLE
#define TIMER_DEFERRABLE 1
#endif
#ifndef from_timer
#define TIMER_DATA_TYPE unsigned long
#define TIMER_FUNC_TYPE void (*)(TIMER_DATA_TYPE)
static inline void timer_setup(struct timer_list *timer,
void (*callback) (struct timer_list *),
unsigned int flags)
{
#ifdef __setup_timer
__setup_timer(timer, (TIMER_FUNC_TYPE) callback,
(TIMER_DATA_TYPE) timer, flags);
#else
if (flags & TIMER_DEFERRABLE)
setup_deferrable_timer(timer, (TIMER_FUNC_TYPE) callback,
(TIMER_DATA_TYPE) timer);
else
setup_timer(timer, (TIMER_FUNC_TYPE) callback,
(TIMER_DATA_TYPE) timer);
#endif
}
#define from_timer(var, callback_timer, timer_fieldname) \
container_of(callback_timer, typeof(*var), timer_fieldname)
#endif
#if LINUX_VERSION_IS_LESS(4,15,0)
#undef DEFINE_TIMER
#define DEFINE_TIMER(_name, _function) \
struct timer_list _name = \
__TIMER_INITIALIZER(_function, 0, 0, 0)
#endif
#endif /* _BACKPORT_TIMER_H */
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