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380c25f640
- Group tqent_task and tqent_timeout_task into a union. They are never used same time. This shrinks taskq_ent_t from 192 to 160 bytes. - Remove tqent_registered. Use tqent_id != 0 instead. - Remove tqent_cancelled. Use taskqueue pending counter instead. - Change tqent_type into uint_t. We don't need to pack it any more. - Change tqent_rc into uint_t, matching refcount(9). - Take shared locks in taskq_lookup(). - Call proper taskqueue_drain_timeout() for TIMEOUT_TASK in taskq_cancel_id() and taskq_wait_id(). - Switch from CK_LIST to regular LIST. Reviewed-by: Allan Jude <allan@klarasystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Mateusz Guzik <mjguzik@gmail.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15356
125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_TASKQ_H
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#define _SYS_TASKQ_H
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#ifdef _KERNEL
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#include <sys/types.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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#include <sys/taskqueue.h>
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#include <sys/thread.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define TASKQ_NAMELEN 31
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typedef struct taskq {
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struct taskqueue *tq_queue;
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} taskq_t;
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typedef uintptr_t taskqid_t;
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typedef void (task_func_t)(void *);
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typedef struct taskq_ent {
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union {
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struct task tqent_task;
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struct timeout_task tqent_timeout_task;
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};
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task_func_t *tqent_func;
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void *tqent_arg;
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taskqid_t tqent_id;
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LIST_ENTRY(taskq_ent) tqent_hash;
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uint_t tqent_type;
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volatile uint_t tqent_rc;
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} taskq_ent_t;
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/*
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* Public flags for taskq_create(): bit range 0-15
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*/
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#define TASKQ_PREPOPULATE 0x0001 /* Prepopulate with threads and data */
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#define TASKQ_CPR_SAFE 0x0002 /* Use CPR safe protocol */
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#define TASKQ_DYNAMIC 0x0004 /* Use dynamic thread scheduling */
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#define TASKQ_THREADS_CPU_PCT 0x0008 /* number of threads as % of ncpu */
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#define TASKQ_DC_BATCH 0x0010 /* Taskq uses SDC in batch mode */
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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.
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*/
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#define TQ_SLEEP 0x00 /* Can block for memory */
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#define TQ_NOSLEEP 0x01 /* cannot block for memory; may fail */
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#define TQ_NOQUEUE 0x02 /* Do not enqueue if can't dispatch */
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#define TQ_NOALLOC 0x04 /* cannot allocate memory; may fail */
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#define TQ_FRONT 0x08 /* Put task at the front of the queue */
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#define TASKQID_INVALID ((taskqid_t)0)
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#define taskq_init_ent(x)
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extern taskq_t *system_taskq;
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/* Global dynamic task queue for long delay */
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extern taskq_t *system_delay_taskq;
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extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
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extern taskqid_t taskq_dispatch_delay(taskq_t *, task_func_t, void *,
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uint_t, clock_t);
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extern void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t,
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taskq_ent_t *);
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extern int taskq_empty_ent(taskq_ent_t *);
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taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
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taskq_t *taskq_create_instance(const char *, int, int, pri_t, int, int, uint_t);
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taskq_t *taskq_create_proc(const char *, int, pri_t, int, int,
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struct proc *, uint_t);
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taskq_t *taskq_create_sysdc(const char *, int, int, int,
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struct proc *, uint_t, uint_t);
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void nulltask(void *);
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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_outstanding(taskq_t *, taskqid_t);
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extern void taskq_wait(taskq_t *);
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extern int taskq_cancel_id(taskq_t *, taskqid_t);
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extern int taskq_member(taskq_t *, kthread_t *);
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extern taskq_t *taskq_of_curthread(void);
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void taskq_suspend(taskq_t *);
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int taskq_suspended(taskq_t *);
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void taskq_resume(taskq_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL */
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#ifdef _STANDALONE
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typedef int taskq_ent_t;
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#define taskq_init_ent(x)
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#endif /* _STANDALONE */
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#endif /* _SYS_TASKQ_H */
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