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kobject: introduce kobj_completion

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A common way to handle kobject lifetimes in embedded in objects with
different lifetime rules is to pair the kobject with a struct completion.

This introduces a kobj_completion structure that can be used in place
of the pairing, along with several convenience functions for
initialization, release, and put-and-wait.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeff Mahoney
2013-09-11 13:00:30 -04:00
committed by Greg Kroah-Hartman
parent 1296fc02c2
commit eee0316497
2 changed files with 68 additions and 0 deletions
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18
include/linux/kobj_completion.h Normal file
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#ifndef _KOBJ_COMPLETION_H_
#define _KOBJ_COMPLETION_H_
#include <linux/kobject.h>
#include <linux/completion.h>
struct kobj_completion {
struct kobject kc_kobj;
struct completion kc_unregister;
};
#define kobj_to_kobj_completion(kobj) \
container_of(kobj, struct kobj_completion, kc_kobj)
void kobj_completion_init(struct kobj_completion *kc, struct kobj_type *ktype);
void kobj_completion_release(struct kobject *kobj);
void kobj_completion_del_and_wait(struct kobj_completion *kc);
#endif /* _KOBJ_COMPLETION_H_ */