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 51
