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authorStanislaw Gruszka <sgruszka@redhat.com>2011-03-07 03:58:33 -0500
committerThomas Gleixner <tglx@linutronix.de>2011-03-08 10:10:38 -0500
commit997772884036e6e121de39322179989154437d9f (patch)
tree618ef63c45e16892ea26a99cafef6b0442e8eca1 /kernel/workqueue.c
parenta5abba989deceb731047425812d268daf7536575 (diff)
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 'kernel/workqueue.c')
-rw-r--r--kernel/workqueue.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ee6578b578ad..b5fe4c00eb3c 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -316,6 +316,11 @@ static inline int __next_wq_cpu(int cpu, const struct cpumask *mask,
316 316
317static struct debug_obj_descr work_debug_descr; 317static struct debug_obj_descr work_debug_descr;
318 318
319static void *work_debug_hint(void *addr)
320{
321 return ((struct work_struct *) addr)->func;
322}
323
319/* 324/*
320 * fixup_init is called when: 325 * fixup_init is called when:
321 * - an active object is initialized 326 * - an active object is initialized
@@ -387,6 +392,7 @@ static int work_fixup_free(void *addr, enum debug_obj_state state)
387 392
388static struct debug_obj_descr work_debug_descr = { 393static struct debug_obj_descr work_debug_descr = {
389 .name = "work_struct", 394 .name = "work_struct",
395 .debug_hint = work_debug_hint,
390 .fixup_init = work_fixup_init, 396 .fixup_init = work_fixup_init,
391 .fixup_activate = work_fixup_activate, 397 .fixup_activate = work_fixup_activate,
392 .fixup_free = work_fixup_free, 398 .fixup_free = work_fixup_free,