freebsd-dev/sys/compat/linuxkpi/common/include/linux/workqueue.h

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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_WORKQUEUE_H_
#define _LINUX_WORKQUEUE_H_
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <asm/atomic.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/taskqueue.h>
#include <sys/mutex.h>
#define WORK_CPU_UNBOUND MAXCPU
#define WQ_UNBOUND (1 << 0)
#define WQ_HIGHPRI (1 << 1)
struct work_struct;
typedef void (*work_func_t)(struct work_struct *);
struct work_exec {
TAILQ_ENTRY(work_exec) entry;
struct work_struct *target;
};
struct workqueue_struct {
struct taskqueue *taskqueue;
struct mtx exec_mtx;
TAILQ_HEAD(, work_exec) exec_head;
atomic_t draining;
};
#define WQ_EXEC_LOCK(wq) mtx_lock(&(wq)->exec_mtx)
#define WQ_EXEC_UNLOCK(wq) mtx_unlock(&(wq)->exec_mtx)
struct work_struct {
struct task work_task;
struct workqueue_struct *work_queue;
work_func_t func;
atomic_t state;
};
#define DECLARE_WORK(name, fn) \
struct work_struct name = { .func = (fn) }
struct delayed_work {
struct work_struct work;
struct {
struct callout callout;
struct mtx mtx;
int expires;
} timer;
};
#define DECLARE_DELAYED_WORK(name, fn) \
struct delayed_work name; \
static void name##_init(void *arg) \
{ \
linux_init_delayed_work(&name, fn); \
} \
SYSINIT(name, SI_SUB_LOCK, SI_ORDER_SECOND, name##_init, NULL)
static inline struct delayed_work *
to_delayed_work(struct work_struct *work)
{
return (container_of(work, struct delayed_work, work));
}
#define INIT_WORK(work, fn) \
do { \
(work)->func = (fn); \
(work)->work_queue = NULL; \
atomic_set(&(work)->state, 0); \
TASK_INIT(&(work)->work_task, 0, linux_work_fn, (work)); \
} while (0)
#define INIT_WORK_ONSTACK(work, fn) \
INIT_WORK(work, fn)
#define INIT_DELAYED_WORK(dwork, fn) \
linux_init_delayed_work(dwork, fn)
#define INIT_DEFERRABLE_WORK(dwork, fn) \
INIT_DELAYED_WORK(dwork, fn)
#define flush_scheduled_work() \
taskqueue_drain_all(system_wq->taskqueue)
#define queue_work(wq, work) \
linux_queue_work_on(WORK_CPU_UNBOUND, wq, work)
#define schedule_work(work) \
linux_queue_work_on(WORK_CPU_UNBOUND, system_wq, work)
#define queue_delayed_work(wq, dwork, delay) \
linux_queue_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay)
#define schedule_delayed_work_on(cpu, dwork, delay) \
linux_queue_delayed_work_on(cpu, system_wq, dwork, delay)
#define queue_work_on(cpu, wq, work) \
linux_queue_work_on(cpu, wq, work)
#define schedule_delayed_work(dwork, delay) \
linux_queue_delayed_work_on(WORK_CPU_UNBOUND, system_wq, dwork, delay)
#define queue_delayed_work_on(cpu, wq, dwork, delay) \
linux_queue_delayed_work_on(cpu, wq, dwork, delay)
#define create_singlethread_workqueue(name) \
linux_create_workqueue_common(name, 1)
#define create_workqueue(name) \
linux_create_workqueue_common(name, mp_ncpus)
#define alloc_ordered_workqueue(name, flags) \
linux_create_workqueue_common(name, 1)
#define alloc_workqueue(name, flags, max_active) \
linux_create_workqueue_common(name, max_active)
#define flush_workqueue(wq) \
taskqueue_drain_all((wq)->taskqueue)
#define drain_workqueue(wq) do { \
atomic_inc(&(wq)->draining); \
taskqueue_drain_all((wq)->taskqueue); \
atomic_dec(&(wq)->draining); \
} while (0)
#define mod_delayed_work(wq, dwork, delay) ({ \
bool __retval; \
__retval = linux_cancel_delayed_work(dwork); \
linux_queue_delayed_work_on(WORK_CPU_UNBOUND, \
wq, dwork, delay); \
__retval; \
})
#define delayed_work_pending(dwork) \
linux_work_pending(&(dwork)->work)
#define cancel_delayed_work(dwork) \
linux_cancel_delayed_work(dwork)
#define cancel_work_sync(work) \
linux_cancel_work_sync(work)
#define cancel_delayed_work_sync(dwork) \
linux_cancel_delayed_work_sync(dwork)
#define flush_work(work) \
linux_flush_work(work)
#define flush_delayed_work(dwork) \
linux_flush_delayed_work(dwork)
#define work_pending(work) \
linux_work_pending(work)
#define work_busy(work) \
linux_work_busy(work)
#define destroy_work_on_stack(work) \
do { } while (0)
#define destroy_delayed_work_on_stack(dwork) \
do { } while (0)
#define destroy_workqueue(wq) \
linux_destroy_workqueue(wq)
/* prototypes */
extern struct workqueue_struct *system_wq;
extern struct workqueue_struct *system_long_wq;
extern struct workqueue_struct *system_unbound_wq;
extern struct workqueue_struct *system_power_efficient_wq;
extern void linux_init_delayed_work(struct delayed_work *, work_func_t);
extern void linux_work_fn(void *, int);
extern struct workqueue_struct *linux_create_workqueue_common(const char *, int);
extern void linux_destroy_workqueue(struct workqueue_struct *);
extern bool linux_queue_work_on(int cpu, struct workqueue_struct *, struct work_struct *);
extern bool linux_queue_delayed_work_on(int cpu, struct workqueue_struct *,
struct delayed_work *, unsigned delay);
extern bool linux_cancel_delayed_work(struct delayed_work *);
extern bool linux_cancel_work_sync(struct work_struct *);
extern bool linux_cancel_delayed_work_sync(struct delayed_work *);
extern bool linux_flush_work(struct work_struct *);
extern bool linux_flush_delayed_work(struct delayed_work *);
extern bool linux_work_pending(struct work_struct *);
extern bool linux_work_busy(struct work_struct *);
#endif /* _LINUX_WORKQUEUE_H_ */