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Arjan van de Ven22a9d642009-01-07 08:45:46 -08001/*
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 */
Dan Williams2955b472012-07-09 19:33:25 -070012#ifndef __ASYNC_H__
13#define __ASYNC_H__
Arjan van de Ven22a9d642009-01-07 08:45:46 -080014
15#include <linux/types.h>
16#include <linux/list.h>
17
18typedef u64 async_cookie_t;
19typedef void (async_func_ptr) (void *data, async_cookie_t cookie);
Dan Williams2955b472012-07-09 19:33:25 -070020struct async_domain {
Tejun Heo52722792013-01-23 09:32:30 -080021 struct list_head pending;
Dan Williams2955b472012-07-09 19:33:25 -070022 unsigned registered:1;
23};
24
25/*
26 * domain participates in global async_synchronize_full
27 */
28#define ASYNC_DOMAIN(_name) \
Lai Jiangshancc2a8b12013-03-12 13:59:14 -070029 struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \
Dan Williams2955b472012-07-09 19:33:25 -070030 .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) \
Lai Jiangshancc2a8b12013-03-12 13:59:14 -070037 struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \
Dan Williams2955b472012-07-09 19:33:25 -070038 .registered = 0 }
Arjan van de Ven22a9d642009-01-07 08:45:46 -080039
40extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data);
Cornelia Huck766ccb92009-01-20 15:31:31 +010041extern async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data,
Dan Williams2955b472012-07-09 19:33:25 -070042 struct async_domain *domain);
Dan Williamsa4683482012-07-09 19:33:30 -070043void async_unregister_domain(struct async_domain *domain);
Arjan van de Ven22a9d642009-01-07 08:45:46 -080044extern void async_synchronize_full(void);
Dan Williams2955b472012-07-09 19:33:25 -070045extern void async_synchronize_full_domain(struct async_domain *domain);
Arjan van de Ven22a9d642009-01-07 08:45:46 -080046extern void async_synchronize_cookie(async_cookie_t cookie);
Cornelia Huck766ccb92009-01-20 15:31:31 +010047extern void async_synchronize_cookie_domain(async_cookie_t cookie,
Dan Williams2955b472012-07-09 19:33:25 -070048 struct async_domain *domain);
Tejun Heo84b233a2013-01-18 14:05:56 -080049extern bool current_is_async(void);
Dan Williams2955b472012-07-09 19:33:25 -070050#endif