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716154c592
Updated AUTHORS, COPYING, DISCLAIMER, and INSTALL files. Added standardized headers to all source file to clearly indicate the copyright, license, and to give credit where credit is due.
100 lines
4.2 KiB
C
100 lines
4.2 KiB
C
/*****************************************************************************\
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* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
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* Copyright (C) 2007 The Regents of the University of California.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* UCRL-CODE-235197
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://github.com/behlendorf/spl/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_TASKQ_H
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#define _SPL_TASKQ_H
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#include <linux/module.h>
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#include <linux/gfp.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/kthread.h>
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#include <sys/types.h>
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#include <sys/thread.h>
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#define TASKQ_NAMELEN 31
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#define TASKQ_PREPOPULATE 0x00000001
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#define TASKQ_CPR_SAFE 0x00000002
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#define TASKQ_DYNAMIC 0x00000004
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#define TASKQ_THREADS_CPU_PCT 0x00000008
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typedef unsigned long taskqid_t;
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typedef void (task_func_t)(void *);
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/*
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* Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as
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* KM_SLEEP/KM_NOSLEEP. TQ_NOQUEUE/TQ_NOALLOC are set particularly
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* large so as not to conflict with already used GFP_* defines.
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*/
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#define TQ_SLEEP KM_SLEEP
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#define TQ_NOSLEEP KM_NOSLEEP
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#define TQ_NOQUEUE 0x01000000
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#define TQ_NOALLOC 0x02000000
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#define TQ_NEW 0x04000000
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#define TQ_ACTIVE 0x80000000
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typedef struct taskq {
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spinlock_t tq_lock; /* protects taskq_t */
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unsigned long tq_lock_flags; /* interrupt state */
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struct task_struct **tq_threads; /* thread pointers */
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const char *tq_name; /* taskq name */
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int tq_nactive; /* # of active threads */
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int tq_nthreads; /* # of total threads */
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int tq_pri; /* priority */
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int tq_minalloc; /* min task_t pool size */
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int tq_maxalloc; /* max task_t pool size */
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int tq_nalloc; /* cur task_t pool size */
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uint_t tq_flags; /* flags */
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taskqid_t tq_next_id; /* next pend/work id */
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taskqid_t tq_lowest_id; /* lowest pend/work id */
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struct list_head tq_free_list; /* free task_t's */
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struct list_head tq_work_list; /* work task_t's */
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struct list_head tq_pend_list; /* pending task_t's */
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wait_queue_head_t tq_work_waitq; /* new work waitq */
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wait_queue_head_t tq_wait_waitq; /* wait waitq */
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} taskq_t;
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/* Global system-wide dynamic task queue available for all consumers */
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extern taskq_t *system_taskq;
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extern taskqid_t __taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
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extern taskq_t *__taskq_create(const char *, int, pri_t, int, int, uint_t);
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extern void __taskq_destroy(taskq_t *);
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extern void __taskq_wait_id(taskq_t *, taskqid_t);
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extern void __taskq_wait(taskq_t *);
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extern int __taskq_member(taskq_t *, void *);
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int spl_taskq_init(void);
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void spl_taskq_fini(void);
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#define taskq_member(tq, t) __taskq_member(tq, t)
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#define taskq_wait_id(tq, id) __taskq_wait_id(tq, id)
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#define taskq_wait(tq) __taskq_wait(tq)
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#define taskq_dispatch(tq, f, p, fl) __taskq_dispatch(tq, f, p, fl)
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#define taskq_create(n, th, p, mi, ma, fl) __taskq_create(n, th, p, mi, ma, fl)
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#define taskq_destroy(tq) __taskq_destroy(tq)
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#endif /* _SPL_TASKQ_H */
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