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bcd68186d8
configurable number of threads like the Solaris version and almost all of the options are supported. Unfortunately, it appears to have made absolutely no difference to our performance numbers. I need to keep looking for where we are bottle necking. git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@93 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
83 lines
3.0 KiB
C
83 lines
3.0 KiB
C
#ifndef _SPL_TASKQ_H
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#define _SPL_TASKQ_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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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/kmem.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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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 task {
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spinlock_t t_lock;
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struct list_head t_list;
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taskqid_t t_id;
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task_func_t *t_func;
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void *t_arg;
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} task_t;
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typedef struct taskq {
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spinlock_t tq_lock; /* protects taskq_t */
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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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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(taskq_t *);
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extern int __taskq_member(taskq_t *, 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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#ifdef __cplusplus
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}
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#endif
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#endif /* _SPL_TASKQ_H */
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