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| author | Dmitry Osipenko <dmitry.osipenko@collabora.com> | 2022-05-10 02:32:10 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-05-19 19:30:30 +0200 |
| commit | c82f898d873ce10d88f8d60b38c8dd19f1ed7c66 (patch) | |
| tree | 71df2d32a177655702f8241e7eca842db2b4fd37 /include/linux/notifier.h | |
| parent | 13dfd97a341a5cf9d15f415dd469f45e971ef12a (diff) | |
| download | linux-c82f898d873ce10d88f8d60b38c8dd19f1ed7c66.tar.gz | |
notifier: Add blocking/atomic_notifier_chain_register_unique_prio()
Add variant of blocking/atomic_notifier_chain_register() functions that
allow registration of a notifier only if it has unique priority, otherwise
-EBUSY error code is returned by the new functions.
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/notifier.h')
| -rw-r--r-- | include/linux/notifier.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/notifier.h b/include/linux/notifier.h index 95e2440037de14..aef88c2d117366 100644 --- a/include/linux/notifier.h +++ b/include/linux/notifier.h @@ -150,6 +150,11 @@ extern int raw_notifier_chain_register(struct raw_notifier_head *nh, extern int srcu_notifier_chain_register(struct srcu_notifier_head *nh, struct notifier_block *nb); +extern int atomic_notifier_chain_register_unique_prio( + struct atomic_notifier_head *nh, struct notifier_block *nb); +extern int blocking_notifier_chain_register_unique_prio( + struct blocking_notifier_head *nh, struct notifier_block *nb); + extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh, struct notifier_block *nb); extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh, |