diff options
Diffstat (limited to 'kernel/include/linux/async.h')
| -rw-r--r-- | kernel/include/linux/async.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/kernel/include/linux/async.h b/kernel/include/linux/async.h new file mode 100644 index 000000000..6b0226bda --- /dev/null +++ b/kernel/include/linux/async.h @@ -0,0 +1,50 @@ +/* + * async.h: Asynchronous function calls for boot performance + * + * (C) Copyright 2009 Intel Corporation + * Author: Arjan van de Ven <arjan@linux.intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + */ +#ifndef __ASYNC_H__ +#define __ASYNC_H__ + +#include <linux/types.h> +#include <linux/list.h> + +typedef u64 async_cookie_t; +typedef void (*async_func_t) (void *data, async_cookie_t cookie); +struct async_domain { + struct list_head pending; + unsigned registered:1; +}; + +/* + * domain participates in global async_synchronize_full + */ +#define ASYNC_DOMAIN(_name) \ + struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \ + .registered = 1 } + +/* + * domain is free to go out of scope as soon as all pending work is + * complete, this domain does not participate in async_synchronize_full + */ +#define ASYNC_DOMAIN_EXCLUSIVE(_name) \ + struct async_domain _name = { .pending = LIST_HEAD_INIT(_name.pending), \ + .registered = 0 } + +extern async_cookie_t async_schedule(async_func_t func, void *data); +extern async_cookie_t async_schedule_domain(async_func_t func, void *data, + struct async_domain *domain); +void async_unregister_domain(struct async_domain *domain); +extern void async_synchronize_full(void); +extern void async_synchronize_full_domain(struct async_domain *domain); +extern void async_synchronize_cookie(async_cookie_t cookie); +extern void async_synchronize_cookie_domain(async_cookie_t cookie, + struct async_domain *domain); +extern bool current_is_async(void); +#endif |