| 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 | */ |
| 12 | #ifndef __ASYNC_H__ |
| 13 | #define __ASYNC_H__ |
| 14 | |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/list.h> |
| 17 | |
| 18 | typedef u64 async_cookie_t; |
| 19 | typedef void (*async_func_t) (void *data, async_cookie_t cookie); |
| 20 | struct async_domain { |
| 21 | struct list_head pending; |
| 22 | unsigned registered:1; |
| 23 | }; |
| 24 | |
| 25 | /* |
| 26 | * domain participates in global async_synchronize_full |
| 27 | */ |
| 28 | #define ASYNC_DOMAIN(_name) \ |
| 29 | struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \ |
| 30 | .registered = 1 } |
| 31 | |
| 32 | /* |
| 33 | * domain is free to go out of scope as soon as all pending work is |
| 34 | * complete, this domain does not participate in async_synchronize_full |
| 35 | */ |
| 36 | #define ASYNC_DOMAIN_EXCLUSIVE(_name) \ |
| 37 | struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \ |
| 38 | .registered = 0 } |
| 39 | |
| 40 | extern async_cookie_t async_schedule(async_func_t func, void *data); |
| 41 | extern async_cookie_t async_schedule_domain(async_func_t func, void *data, |
| 42 | struct async_domain *domain); |
| 43 | void async_unregister_domain(struct async_domain *domain); |
| 44 | extern void async_synchronize_full(void); |
| 45 | extern void async_synchronize_full_domain(struct async_domain *domain); |
| 46 | extern void async_synchronize_cookie(async_cookie_t cookie); |
| 47 | extern void async_synchronize_cookie_domain(async_cookie_t cookie, |
| 48 | struct async_domain *domain); |
| 49 | extern bool current_is_async(void); |
| 50 | #endif |