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#ifndef _SPL_TASKQ_H
#define _SPL_TASKQ_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Task Queues - As of linux 2.6.x task queues have been replaced by a
* similar construct called work queues. The big difference on the linux
* side is that functions called from work queues run in process context
* and not interrupt context.
*
* One nice feature of Solaris which does not exist in linux work
* queues in the notion of a dynamic work queue. Rather than implementing
* this in the shim layer I'm hardcoding one-thread per work queue.
*
* XXX - This may end up being a significant performance penalty which
* forces us to implement dynamic workqueues. Which is all very doable
* with a little effort.
*/
#include <linux/module.h>
#include <linux/workqueue.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include "spl-types.h"
#undef DEBUG_TASKQ_UNIMPLEMENTED
#define TASKQ_NAMELEN 31
#define taskq_t workq_t
typedef struct workqueue_struct workq_t;
typedef unsigned long taskqid_t;
typedef void (*task_func_t)(void *);
/*
* Public flags for taskq_create(): bit range 0-15
*/
#define TASKQ_PREPOPULATE 0x0000 /* XXX - Workqueues fully populate */
#define TASKQ_CPR_SAFE 0x0000 /* XXX - No analog */
#define TASKQ_DYNAMIC 0x0000 /* XXX - Worksqueues not dynamic */
/*
* Flags for taskq_dispatch. TQ_SLEEP/TQ_NOSLEEP should be same as
* KM_SLEEP/KM_NOSLEEP.
*/
#define TQ_SLEEP 0x00 /* XXX - Workqueues don't support */
#define TQ_NOSLEEP 0x00 /* these sorts of flags. They */
#define TQ_NOQUEUE 0x00 /* always run in application */
#define TQ_NOALLOC 0x00 /* context and can sleep. */
#ifdef DEBUG_TASKQ_UNIMPLEMENTED
static __inline__ void taskq_init(void) {
#error "taskq_init() not implemented"
}
static __inline__ taskq_t *
taskq_create_instance(const char *, int, int, pri_t, int, int, uint_t) {
#error "taskq_create_instance() not implemented"
}
extern void nulltask(void *);
extern void taskq_suspend(taskq_t *);
extern int taskq_suspended(taskq_t *);
extern void taskq_resume(taskq_t *);
#endif /* DEBUG_TASKQ_UNIMPLEMENTED */
extern taskqid_t __taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
extern taskq_t *__taskq_create(const char *, int, pri_t, int, int, uint_t);
#define taskq_create(name, thr, pri, min, max, flags) \
__taskq_create(name, thr, pri, min, max, flags)
#define taskq_dispatch(tq, func, priv, flags) \
__taskq_dispatch(tq, func, priv, flags)
#define taskq_destory(tq) destroy_workqueue(tq)
#define taskq_wait(tq) flush_workqueue(tq)
#define taskq_member(tq, kthr) 1 /* XXX -Just be true */
#ifdef __cplusplus
}
#endif
#endif /* _SPL_TASKQ_H */
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