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Commit 1461c5be authored by Fengguang Wu's avatar Fengguang Wu Committed by Greg Kroah-Hartman
Browse files

kobject: show debug info on delayed kobject release 



Useful for locating buggy drivers on kernel oops.

It may add dozens of new lines to boot dmesg. DEBUG_KOBJECT_RELEASE is
hopefully only enabled in debug kernels (like maybe the Fedora rawhide
one, or at developers), so being a bit more verbose is likely ok.

Signed-off-by: default avatarFengguang Wu <fengguang.wu@intel.com>
Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a6b01ded

lib/kobject.c

+1 −1
Original line number Diff line number Diff line
@@ -628,7 +628,7 @@ static void kobject_release(struct kref *kref) 
{

	struct kobject *kobj = container_of(kref, struct kobject, kref);

#ifdef CONFIG_DEBUG_KOBJECT_RELEASE

	pr_debug("kobject: '%s' (%p): %s, parent %p (delayed)\n",

	pr_info("kobject: '%s' (%p): %s, parent %p (delayed)\n",

		 kobject_name(kobj), kobj, __func__, kobj->parent);

	INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);

	schedule_delayed_work(&kobj->release, HZ);