249#ifndef _LINUX_TIMER_H
#define _LINUX_TIMER_H

#include <linux/list.h>
#include <linux/ktime.h>
#include <linux/stddef.h>
#include <linux/debugobjects.h>
#include <linux/stringify.h>

struct tvec_base;

struct timer_list {
	/*
	 * All fields that change during normal runtime grouped to the
	 * same cacheline
	 */
	struct list_head entry;
	unsigned long expires;
	struct tvec_base *base;

	void (*function)(unsigned long);
	unsigned long data;

	int slack;

#ifdef CONFIG_TIMER_STATS
	int start_pid;
	void *start_site;
	char start_comm[16];
#endif
#ifdef CONFIG_LOCKDEP
	struct lockdep_map lockdep_map;
#endif
};

extern struct tvec_base boot_tvec_bases;

#ifdef CONFIG_LOCKDEP
/*
 * NB: because we have to copy the lockdep_map, setting the lockdep_map key
 * (second argument) here is required, otherwise it could be initialised to
 * the copy of the lockdep_map later! We use the pointer to and the string
 * "<file>:<line>" as the key resp. the name of the lockdep_map.
 */
#define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)				\
	.lockdep_map = STATIC_LOCKDEP_MAP_INIT(_kn, &_kn),
#else
#define __TIMER_LOCKDEP_MAP_INITIALIZER(_kn)
#endif

/*
 * Note that all tvec_bases are at least 4 byte aligned and lower two bits
 * of base in timer_list is guaranteed to be zero. Use them for flags.
 *
 * A deferrable timer will work normally when the system is busy, but
 * will not cause a CPU to come out of idle just to service it; instead,
 * the timer will be serviced when the CPU eventually wakes up with a
 * subsequent non-deferrable timer.
 *
 * An irqsafe timer is executed with IRQ disabled and it's safe to wait for
 * the completion of the running instance from IRQ handlers, for example,
 * by calling del_timer_sync().
 *
 * Note: The irq disabled callback execution is a special case for
 * workqueue locking issues. It's not meant for executing random crap
 * with interrupts disabled. Abuse is monitored!
 */
#define TIMER_DEFERRABLE		0x1LU
#define TIMER_IRQSAFE			0x2LU

#define TIMER_FLAG_MASK			0x3LU

#define __TIMER_INITIALIZER(_function, _expires, _data, _flags) { \
		.entry = { .prev = TIMER_ENTRY_STATIC },	\
		.function = (_function),			\
		.expires = (_expires),				\
		.data = (_data),				\
		.base = (void *)((unsigned long)&boot_tvec_bases + (_flags)), \
		.slack = -1,					\
		__TIMER_LOCKDEP_MAP_INITIALIZER(		\
			__FILE__ ":" __stringify(__LINE__))	\
	}

#define TIMER_INITIALIZER(_function, _expires, _data)		\
	__TIMER_INITIALIZER((_function), (_expires), (_data), 0)

#define TIMER_DEFERRED_INITIALIZER(_function, _expires, _data)	\
	__TIMER_INITIALIZER((_function), (_expires), (_data), TIMER_DEFERRABLE)

#define DEFINE_TIMER(_name, _function, _expires, _data)		\
	struct timer_list _name =				\
		TIMER_INITIALIZER(_function, _expires, _data)

void init_timer_key(struct timer_list *timer, unsigned int flags,
		    const char *name, struct lock_class_key *key);

#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
extern void init_timer_on_stack_key(struct timer_list *timer,
				    unsigned int flags, const char *name,
				    struct/*
 * vim: noexpandtab ts=8 sts=0 sw=8:
 *
 * configfs_example_macros.c - This file is a demonstration module
 *      containing a number of configfs subsystems.  It uses the helper
 *      macros defined by configfs.h
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.
 *
 * Based on sysfs:
 * 	sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel
 *
 * configfs Copyright (C) 2005 Oracle.  All rights reserved.
 */

#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <linux/configfs.h>



/*
 * 01-childless
 *
 * This first example is a childless subsystem.  It cannot create
 * any config_items.  It just has attributes.
 *
 * Note that we are enclosing the configfs_subsystem inside a container.
 * This is not necessary if a subsystem has no attributes directly
 * on the subsystem.  See the next example, 02-simple-children, for
 
	__init_timer((timer), 0)
#define init_timer_deferrable(timer)					\
	__init_timer((timer), TIMER_DEFERRABLE)
#define init_timer_on_stack(timer)					\
	__init_timer_on_stack((timer), 0)

#define __setup_timer(_timer, _fn, _data, _flags)			\
	do {								\
		__init_timer((_timer), (_flags));			\
		(_timer)->function = (_fn);				\
		(_timer)->data = (_data);				\
	} while (0)

#define __setup_timer_on_stack(_timer, _fn, _data, _flags)		\
	do {								\
		__init_timer_on_stack((_timer), (_flags));		\
		(_timer)->function = (_fn);				\
		(_timer)->data = (_data);				\
	} while (0)

#define setup_timer(timer, fn, data)					\
	__setup_timer((timer), (fn), (data), 0)
#define setup_timer_on_stack(timer, fn, data)				\
	__setup_timer_on_stack((timer), (fn), (data), 0)
#define setup_deferrable_timer_on_stack(timer, fn, data)		\
	__setup_timer_on_stack((timer), (fn), (data), TIMER_DEFERRABLE)

/**
 * timer_pending - is a timer pending?
 * @timer: the timer in question
 *
 * timer_pending will tell whether a given timer is currently pending,
 * or not. Callers must ensure serialization wrt. other operations done
 * to this timer, eg. interrupt contexts, or other CPUs on SMP.
 *
 * return value: 1 if the timer is pending, 0 if not.
 */
static inline int timer_pending(const struct timer_list * timer)
{
	return timer->entry.next != NULL;
}

extern void add_timer_on(struct timer_list *timer, int cpu);
extern
	return sprintf(page, "%d\n", childless->storeme);
}

static ssize_t childless_storeme_write(struct childless *childless,
				       const char *page,
				       size_t count)
{
	unsigned long tmp;
	char *p = (char *) page;

	tmp = simple_strtoul(p, &p, 10);
	if (!p || (*p && (*p != '\n')))
		return -EINVAL;

	if (tmp > INT_MAX)
		return -ERANGE;

	childless->storeme = tmp;

	return count;
}

static ssize_t childless_description_read(struct childless *childless,
					  char *page)
{
	return sprintf(page,
"[01-childless]\n"
"\n"
"The childless subsystem is the simplest possible subsystem in\n"
"configfs.  It does not support the creation of child config_items.\n"
"It only has a few attributes.  In fact, it isn't much different\n"
"than a directory in /proc.\n");
}

CHILDLESS_ATTR_RO(showme, childless_showme_read);
CHILDLESS_ATTR(storeme, S_IRUGO | S_IWUSR, childless_storeme_read,
	       childless_storeme_write);
CHILDLESS_ATTR_RO(description, childless_description_read);

static struct configfs_attribute *childless_attrs[] = {
	&childless_attr_showme.attr,
	&childless_attr_storeme.attr,
	&childless_attr_description.attr,
	NULL,
};

CONFIGFS_ATTR_OPS(childless);
static struct configfs_item_operations childless_item_ops = {
	.show_attribute		= childless_attr_show,
	.store_attribute	= chi
{
	timer->start_site = NULL;
}
#else
static inline void init_timer_stats(void)
{
}

static inline void timer_stats_timer_set_start_info(struct timer_list *timer)
{
}

static inline void timer_stats_timer_clear_start_info(struct timer_list *timer)
{
}
#endif

extern void add_timer(struct timer_list *timer);

extern int try_to_del_timer_sync(struct timer_list *timer);

#ifdef CONFIG_SMP
  extern int del_timer_sync(struct timer_list *timer);
#else
# define del_timer_sync(t)		del_timer(t)
#endif

#define del_singleshot_timer_sync(t) del_timer_sync(t)

extern void init_timers(void);
extern void run_local_timers(void);
struct hrtimer;
extern enum hrtimer_restart it_real_fn(struct hrtimer *);

unsigned long __round_jiffies(unsigned long j, int cpu);
unsigned long __round_jiffies_relative(unsigned long j, int cpu);
unsigned long round_jiffies(unsigned long j);
unsigned long round_jiffies_relative(unsigned long j);

unsigned long __round_jiffies_up(unsigned long j, int cpu);
unsigned long __round_jiffies_up_relative(unsigned long j, int cpu);
unsigned long round_jiffies_up(unsigned long j);
unsigned long round_jiffies_up_relative(unsigned long j);

#endif