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Date: Sun, 19 Mar 2023 16:41:24 +0800 From: Yangtao Li <frank.li@...o.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org> Cc: Yangtao Li <frank.li@...o.com>, linux-kernel@...r.kernel.org Subject: [PATCH v2 01/10] kobject: introduce kobject_del_and_put() There are plenty of using kobject_del() and kobject_put() together in the kernel tree. This patch wraps these two calls in a single helper. Signed-off-by: Yangtao Li <frank.li@...o.com> --- v2: -add kobject_del_and_put() users include/linux/kobject.h | 1 + lib/kobject.c | 17 +++++++++++++++-- 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/include/linux/kobject.h b/include/linux/kobject.h index bdab370a24f4..782d4bd119f8 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -111,6 +111,7 @@ extern struct kobject *kobject_get(struct kobject *kobj); extern struct kobject * __must_check kobject_get_unless_zero( struct kobject *kobj); extern void kobject_put(struct kobject *kobj); +extern void kobject_del_and_put(struct kobject *kobj); extern const void *kobject_namespace(const struct kobject *kobj); extern void kobject_get_ownership(const struct kobject *kobj, diff --git a/lib/kobject.c b/lib/kobject.c index 6e2f0bee3560..8c0293e37214 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -731,6 +731,20 @@ void kobject_put(struct kobject *kobj) } EXPORT_SYMBOL(kobject_put); +/** + * kobject_del_and_put() - Delete kobject. + * @kobj: object. + * + * Unlink kobject from hierarchy and decrement the refcount. + * If refcount is 0, call kobject_cleanup(). + */ +void kobject_del_and_put(struct kobject *kobj) +{ + kobject_del(kobj); + kobject_put(kobj); +} +EXPORT_SYMBOL_GPL(kobject_del_and_put); + static void dynamic_kobj_release(struct kobject *kobj) { pr_debug("kobject: (%p): %s\n", kobj, __func__); @@ -874,8 +888,7 @@ void kset_unregister(struct kset *k) { if (!k) return; - kobject_del(&k->kobj); - kobject_put(&k->kobj); + kobject_del_and_put(&k->kobj); } EXPORT_SYMBOL(kset_unregister); -- 2.35.1
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