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-rw-r--r--include/linux/async.h36
1 files changed, 32 insertions, 4 deletions
diff --git a/include/linux/async.h b/include/linux/async.h
index 68a9530196f2..7a24fe9b44b4 100644
--- a/include/linux/async.h
+++ b/include/linux/async.h
@@ -9,19 +9,47 @@
9 * as published by the Free Software Foundation; version 2 9 * as published by the Free Software Foundation; version 2
10 * of the License. 10 * of the License.
11 */ 11 */
12#ifndef __ASYNC_H__
13#define __ASYNC_H__
12 14
13#include <linux/types.h> 15#include <linux/types.h>
14#include <linux/list.h> 16#include <linux/list.h>
15 17
16typedef u64 async_cookie_t; 18typedef u64 async_cookie_t;
17typedef void (async_func_ptr) (void *data, async_cookie_t cookie); 19typedef void (async_func_ptr) (void *data, async_cookie_t cookie);
20struct async_domain {
21 struct list_head node;
22 struct list_head domain;
23 int count;
24 unsigned registered:1;
25};
26
27/*
28 * domain participates in global async_synchronize_full
29 */
30#define ASYNC_DOMAIN(_name) \
31 struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \
32 .domain = LIST_HEAD_INIT(_name.domain), \
33 .count = 0, \
34 .registered = 1 }
35
36/*
37 * domain is free to go out of scope as soon as all pending work is
38 * complete, this domain does not participate in async_synchronize_full
39 */
40#define ASYNC_DOMAIN_EXCLUSIVE(_name) \
41 struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \
42 .domain = LIST_HEAD_INIT(_name.domain), \
43 .count = 0, \
44 .registered = 0 }
18 45
19extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data); 46extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data);
20extern async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data, 47extern async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data,
21 struct list_head *list); 48 struct async_domain *domain);
49void async_unregister_domain(struct async_domain *domain);
22extern void async_synchronize_full(void); 50extern void async_synchronize_full(void);
23extern void async_synchronize_full_domain(struct list_head *list); 51extern void async_synchronize_full_domain(struct async_domain *domain);
24extern void async_synchronize_cookie(async_cookie_t cookie); 52extern void async_synchronize_cookie(async_cookie_t cookie);
25extern void async_synchronize_cookie_domain(async_cookie_t cookie, 53extern void async_synchronize_cookie_domain(async_cookie_t cookie,
26 struct list_head *list); 54 struct async_domain *domain);
27 55#endif