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1 | /* |
2 | * async.h: Asynchronous function calls for boot performance | |
3 | * | |
4 | * (C) Copyright 2009 Intel Corporation | |
5 | * Author: Arjan van de Ven <arjan@linux.intel.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; version 2 | |
10 | * of the License. | |
11 | */ | |
2955b47d DW |
12 | #ifndef __ASYNC_H__ |
13 | #define __ASYNC_H__ | |
22a9d645 AV |
14 | |
15 | #include <linux/types.h> | |
16 | #include <linux/list.h> | |
17 | ||
18 | typedef u64 async_cookie_t; | |
19 | typedef void (async_func_ptr) (void *data, async_cookie_t cookie); | |
2955b47d DW |
20 | struct async_domain { |
21 | struct list_head node; | |
52722794 | 22 | struct list_head pending; |
2955b47d DW |
23 | unsigned registered:1; |
24 | }; | |
25 | ||
26 | /* | |
27 | * domain participates in global async_synchronize_full | |
28 | */ | |
29 | #define ASYNC_DOMAIN(_name) \ | |
30 | struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ | |
52722794 | 31 | .pending = LIST_HEAD_INIT(_name.pending), \ |
2955b47d DW |
32 | .registered = 1 } |
33 | ||
34 | /* | |
35 | * domain is free to go out of scope as soon as all pending work is | |
36 | * complete, this domain does not participate in async_synchronize_full | |
37 | */ | |
38 | #define ASYNC_DOMAIN_EXCLUSIVE(_name) \ | |
39 | struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ | |
52722794 | 40 | .pending = LIST_HEAD_INIT(_name.pending), \ |
2955b47d | 41 | .registered = 0 } |
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42 | |
43 | extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data); | |
766ccb9e | 44 | extern async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data, |
2955b47d | 45 | struct async_domain *domain); |
a4683487 | 46 | void async_unregister_domain(struct async_domain *domain); |
22a9d645 | 47 | extern void async_synchronize_full(void); |
2955b47d | 48 | extern void async_synchronize_full_domain(struct async_domain *domain); |
22a9d645 | 49 | extern void async_synchronize_cookie(async_cookie_t cookie); |
766ccb9e | 50 | extern void async_synchronize_cookie_domain(async_cookie_t cookie, |
2955b47d | 51 | struct async_domain *domain); |
84b233ad | 52 | extern bool current_is_async(void); |
2955b47d | 53 | #endif |