Differential D7393 Diff 19242 head/sys/sys/gtaskqueue.h

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head/sys/sys/gtaskqueue.h

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				/*-
				* Copyright (c) 2014 Jeffrey Roberson <jeff@freebsd.org>
				* Copyright (c) 2016 Matthew Macy <mmacy@nextbsd.org>
				* 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_
				#include <sys/taskqueue.h>

				#ifndef _KERNEL
				#error "no user-servicable parts inside"
				#endif

				struct gtaskqueue;
				typedef void (gtaskqueue_enqueue_fn)(void context);

				/*
				* Taskqueue groups. Manages dynamic thread groups and irq binding for
				* device and other tasks.
				*/

				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);

				int grouptaskqueue_enqueue(struct gtaskqueue queue, struct gtask task);
				void taskqgroup_attach(struct taskqgroup qgroup, struct grouptask grptask,
				void uniq, int irq, char name);
				int taskqgroup_attach_cpu(struct taskqgroup qgroup, struct grouptask grptask,
				void uniq, int cpu, int irq, char name);
				void taskqgroup_detach(struct taskqgroup qgroup, struct grouptask gtask);
				struct taskqgroup taskqgroup_create(char name);
				void taskqgroup_destroy(struct taskqgroup *qgroup);
				int taskqgroup_adjust(struct taskqgroup *qgroup, int cnt, int stride);

				#define TASK_ENQUEUED 0x1
				#define TASK_SKIP_WAKEUP 0x2


				#define GTASK_INIT(task, flags, priority, func, context) do { \
				(task)->ta_flags = flags; \
				(task)->ta_priority = (priority); \
				(task)->ta_func = (func); \
				(task)->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


				#ifdef EARLY_AP_STARTUP
				#define TASKQGROUP_DEFINE(name, cnt, stride) \
				\
				struct taskqgroup *qgroup_##name; \
				\
				static void \
				taskqgroup_define_##name(void *arg) \
				{ \
				qgroup_##name = taskqgroup_create(#name); \
				taskqgroup_adjust(qgroup_##name, (cnt), (stride)); \
				} \
				\
				SYSINIT(taskqgroup_##name, SI_SUB_INIT_IF, SI_ORDER_FIRST, \
				taskqgroup_define_##name, NULL)
				#else
				#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_INIT_IF, 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); \
				\
				struct __hack
				#endif
				TASKQGROUP_DECLARE(net);

				#endif /* !_SYS_GTASKQUEUE_H_ */