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authorStanislaw Gruszka <sgruszka@redhat.com>2011-03-07 09:58:33 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-03-08 16:10:38 +0100
commit997772884036e6e121de39322179989154437d9f (patch)
tree618ef63c45e16892ea26a99cafef6b0442e8eca1 /lib
parenta5abba989deceb731047425812d268daf7536575 (diff)
downloadlinux-997772884036e6e121de39322179989154437d9f.tar.gz
debugobjects: Add hint for better object identification
In complex subsystems like mac80211 structures can contain several timers and work structs, so identifying a specific instance from the call trace and object type output of debugobjects can be hard. Allow the subsystems which support debugobjects to provide a hint function. This function returns a pointer to a kernel address (preferrably the objects callback function) which is printed along with the debugobjects type. Add hint methods for timer_list, work_struct and hrtimer. [ tglx: Massaged changelog, made it compile ] Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> LKML-Reference: <20110307085809.GA9334@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib')
-rw-r--r--lib/debugobjects.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index deebcc57d4e..9d86e45086f 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -249,14 +249,17 @@ static struct debug_bucket *get_bucket(unsigned long addr)
static void debug_print_object(struct debug_obj *obj, char *msg)
{
+ struct debug_obj_descr *descr = obj->descr;
static int limit;
- if (limit < 5 && obj->descr != descr_test) {
+ if (limit < 5 && descr != descr_test) {
+ void *hint = descr->debug_hint ?
+ descr->debug_hint(obj->object) : NULL;
limit++;
WARN(1, KERN_ERR "ODEBUG: %s %s (active state %u) "
- "object type: %s\n",
+ "object type: %s hint: %pS\n",
msg, obj_states[obj->state], obj->astate,
- obj->descr->name);
+ descr->name, hint);
}
debug_objects_warnings++;
}