blob: 0bfae54526a3a5d99b60f90278916afd7692bc75 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#include <sys/taskq.h>
/*
* Task queue interface
*
* The taskq_work_wrapper functions are used to manage the work_structs
* which must be submitted to linux. The shim layer allocates a wrapper
* structure for all items which contains a pointer to itself as well as
* the real work to be performed. When the work item run the generic
* handle is called which calls the real work function and then using
* the self pointer frees the work_struct.
*/
typedef struct taskq_work_wrapper {
struct work_struct tww_work;
task_func_t tww_func;
void * tww_priv;
} taskq_work_wrapper_t;
static void
taskq_work_handler(void *priv)
{
taskq_work_wrapper_t *tww = priv;
BUG_ON(tww == NULL);
BUG_ON(tww->tww_func == NULL);
/* Call the real function and free the wrapper */
tww->tww_func(tww->tww_priv);
kfree(tww);
}
/* XXX - All flags currently ignored */
taskqid_t
__taskq_dispatch(taskq_t *tq, task_func_t func, void *priv, uint_t flags)
{
struct workqueue_struct *wq = tq;
taskq_work_wrapper_t *tww;
int rc;
BUG_ON(in_interrupt());
BUG_ON(tq == NULL);
BUG_ON(func == NULL);
tww = (taskq_work_wrapper_t *)kmalloc(sizeof(*tww), GFP_KERNEL);
if (!tww)
return (taskqid_t)0;
INIT_WORK(&(tww->tww_work), taskq_work_handler, tww);
tww->tww_func = func;
tww->tww_priv = priv;
rc = queue_work(wq, &(tww->tww_work));
if (!rc) {
kfree(tww);
return (taskqid_t)0;
}
return (taskqid_t)wq;
}
EXPORT_SYMBOL(__taskq_dispatch);
/* XXX - Most args ignored until we decide if it's worth the effort
* to emulate the solaris notion of dynamic thread pools. For
* now we simply serialize everything through one thread which
* may come back to bite us as a performance issue.
* pri - Ignore priority
* min - Ignored until this is a dynamic thread pool
* max - Ignored until this is a dynamic thread pool
* flags - Ignored until this is a dynamic thread_pool
*/
taskq_t *
__taskq_create(const char *name, int nthreads, pri_t pri,
int minalloc, int maxalloc, uint_t flags)
{
/* NOTE: Linux workqueue names are limited to 10 chars */
return create_singlethread_workqueue(name);
}
EXPORT_SYMBOL(__taskq_create);
|
