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authorIngo Molnar <mingo@kernel.org>2021-08-29 09:18:53 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-01-04 14:36:06 +0100
commitf083266487690124481eac0869da850406fb3ed3 (patch)
tree303cb74c7b12ad0b4615fd4cfdc234444ead79a7 /drivers/base
parent28f0c335dd4a1a4b44b3e6c6402825a93132e1a4 (diff)
downloadlinux-next-f083266487690124481eac0869da850406fb3ed3.tar.gz
headers/uninline: Uninline single-use function: kobject_has_children()
This was the only usage of <linux/kref_api.h> in <linux/kobject_api.h>, so we'll able to decouple the two after this change. Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/core.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 60d703ebd123..603941b00988 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -3028,6 +3028,23 @@ static inline struct kobject *get_glue_dir(struct device *dev)
return dev->kobj.parent;
}
+/**
+ * kobject_has_children - Returns whether a kobject has children.
+ * @kobj: the object to test
+ *
+ * This will return whether a kobject has other kobjects as children.
+ *
+ * It does NOT account for the presence of attribute files, only sub
+ * directories. It also assumes there is no concurrent addition or
+ * removal of such children, and thus relies on external locking.
+ */
+static inline bool kobject_has_children(struct kobject *kobj)
+{
+ WARN_ON_ONCE(kref_read(&kobj->kref) == 0);
+
+ return kobj->sd && kobj->sd->dir.subdirs;
+}
+
/*
* make sure cleaning up dir as the last step, we need to make
* sure .release handler of kobject is run with holding the