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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2014 Jeffrey Roberson <jeff@freebsd.org>
* Copyright (c) 2016 Matthew Macy <mmacy@mattmacy.io>
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 _SYS_GTASKQUEUE_H_
#define _SYS_GTASKQUEUE_H_
#ifndef _KERNEL
#error "no user-serviceable parts inside"
#endif
#include <sys/_task.h>
#include <sys/bus.h>
#include <sys/taskqueue.h>
#include <sys/types.h>
struct gtaskqueue;
/*
* Taskqueue groups. Manages dynamic thread groups and irq binding for
* device and other tasks.
*/
struct grouptask {
struct gtask gt_task;
void *gt_taskqueue;
LIST_ENTRY(grouptask) gt_list;
void *gt_uniq;
#define GROUPTASK_NAMELEN 32
char gt_name[GROUPTASK_NAMELEN];
#ifndef __rtems__
device_t gt_dev;
struct resource *gt_irq;
int gt_cpu;
#endif /* __rtems__ */
};
void gtaskqueue_block(struct gtaskqueue *queue);
void gtaskqueue_unblock(struct gtaskqueue *queue);
int gtaskqueue_cancel(struct gtaskqueue *queue, struct gtask *gtask);
void gtaskqueue_drain(struct gtaskqueue *queue, struct gtask *task);
void gtaskqueue_drain_all(struct gtaskqueue *queue);
void grouptask_block(struct grouptask *grouptask);
void grouptask_unblock(struct grouptask *grouptask);
int grouptaskqueue_enqueue(struct gtaskqueue *queue, struct gtask *task);
void taskqgroup_attach(struct taskqgroup *qgroup, struct grouptask *grptask,
void *uniq, device_t dev, struct resource *irq, const char *name);
int taskqgroup_attach_cpu(struct taskqgroup *qgroup,
struct grouptask *grptask, void *uniq, int cpu, device_t dev,
struct resource *irq, const char *name);
void taskqgroup_detach(struct taskqgroup *qgroup, struct grouptask *gtask);
struct taskqgroup *taskqgroup_create(const char *name);
void taskqgroup_destroy(struct taskqgroup *qgroup);
int taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride);
void taskqgroup_config_gtask_init(void *ctx, struct grouptask *gtask,
gtask_fn_t *fn, const char *name);
void taskqgroup_config_gtask_deinit(struct grouptask *gtask);
#define TASK_ENQUEUED 0x1
#define TASK_SKIP_WAKEUP 0x2
#define TASK_NOENQUEUE 0x4
#define GTASK_INIT(gtask, flags, priority, func, context) do { \
(gtask)->ta_flags = flags; \
(gtask)->ta_priority = (priority); \
(gtask)->ta_func = (func); \
(gtask)->ta_context = (context); \
} while (0)
#define GROUPTASK_INIT(gtask, priority, func, context) \
GTASK_INIT(&(gtask)->gt_task, TASK_SKIP_WAKEUP, priority, func, context)
#define GROUPTASK_ENQUEUE(gtask) \
grouptaskqueue_enqueue((gtask)->gt_taskqueue, &(gtask)->gt_task)
#define TASKQGROUP_DECLARE(name) \
extern struct taskqgroup *qgroup_##name
#define TASKQGROUP_DEFINE(name, cnt, stride) \
\
struct taskqgroup *qgroup_##name; \
\
static void \
taskqgroup_define_##name(void *arg) \
{ \
qgroup_##name = taskqgroup_create(#name); \
} \
\
SYSINIT(taskqgroup_##name, SI_SUB_TASKQ, SI_ORDER_FIRST, \
taskqgroup_define_##name, NULL); \
\
static void \
taskqgroup_adjust_##name(void *arg) \
{ \
taskqgroup_adjust(qgroup_##name, (cnt), (stride)); \
} \
\
SYSINIT(taskqgroup_adj_##name, SI_SUB_SMP, SI_ORDER_ANY, \
taskqgroup_adjust_##name, NULL)
TASKQGROUP_DECLARE(net);
TASKQGROUP_DECLARE(softirq);
#endif /* !_SYS_GTASKQUEUE_H_ */
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