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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-04 08:17:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-04 08:17:12 -0700
commitb854e4de0bf88d094476af82c0d5a80f6f2af916 (patch)
tree6e9b0a9f28468b043bd395fd816c4b44d4ac8f58 /lib
parent458c3f60ef12996d5a5b390260a5112bb1da1615 (diff)
parent7d992feb7694a21ee81f22894b455dadd5d1c110 (diff)
downloadlwn-b854e4de0bf88d094476af82c0d5a80f6f2af916.tar.gz
lwn-b854e4de0bf88d094476af82c0d5a80f6f2af916.zip
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "Main RCU changes this cycle were: - Full-system idle detection. This is for use by Frederic Weisbecker's adaptive-ticks mechanism. Its purpose is to allow the timekeeping CPU to shut off its tick when all other CPUs are idle. - Miscellaneous fixes. - Improved rcutorture test coverage. - Updated RCU documentation" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) nohz_full: Force RCU's grace-period kthreads onto timekeeping CPU nohz_full: Add full-system-idle state machine jiffies: Avoid undefined behavior from signed overflow rcu: Simplify _rcu_barrier() processing rcu: Make rcutorture emit online failures if verbose rcu: Remove unused variable from rcu_torture_writer() rcu: Sort rcutorture module parameters rcu: Increase rcutorture test coverage rcu: Add duplicate-callback tests to rcutorture doc: Fix memory-barrier control-dependency example rcu: Update RTFP documentation nohz_full: Add full-system-idle arguments to API nohz_full: Add full-system idle states and variables nohz_full: Add per-CPU idle-state tracking nohz_full: Add rcu_dyntick data for scalable detection of all-idle state nohz_full: Add Kconfig parameter for scalable detection of all-idle state nohz_full: Add testing information to documentation rcu: Eliminate unused APIs intended for adaptive ticks rcu: Select IRQ_WORK from TREE_PREEMPT_RCU rculist: list_first_or_null_rcu() should use list_entry_rcu() ...
Diffstat (limited to 'lib')
-rw-r--r--lib/debugobjects.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 37061ede8b81..bf2c8b1043d8 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -381,19 +381,21 @@ void debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr)
* debug_object_activate - debug checks when an object is activated
* @addr: address of the object
* @descr: pointer to an object specific debug description structure
+ * Returns 0 for success, -EINVAL for check failed.
*/
-void debug_object_activate(void *addr, struct debug_obj_descr *descr)
+int debug_object_activate(void *addr, struct debug_obj_descr *descr)
{
enum debug_obj_state state;
struct debug_bucket *db;
struct debug_obj *obj;
unsigned long flags;
+ int ret;
struct debug_obj o = { .object = addr,
.state = ODEBUG_STATE_NOTAVAILABLE,
.descr = descr };
if (!debug_objects_enabled)
- return;
+ return 0;
db = get_bucket((unsigned long) addr);
@@ -405,23 +407,26 @@ void debug_object_activate(void *addr, struct debug_obj_descr *descr)
case ODEBUG_STATE_INIT:
case ODEBUG_STATE_INACTIVE:
obj->state = ODEBUG_STATE_ACTIVE;
+ ret = 0;
break;
case ODEBUG_STATE_ACTIVE:
debug_print_object(obj, "activate");
state = obj->state;
raw_spin_unlock_irqrestore(&db->lock, flags);
- debug_object_fixup(descr->fixup_activate, addr, state);
- return;
+ ret = debug_object_fixup(descr->fixup_activate, addr, state);
+ return ret ? -EINVAL : 0;
case ODEBUG_STATE_DESTROYED:
debug_print_object(obj, "activate");
+ ret = -EINVAL;
break;
default:
+ ret = 0;
break;
}
raw_spin_unlock_irqrestore(&db->lock, flags);
- return;
+ return ret;
}
raw_spin_unlock_irqrestore(&db->lock, flags);
@@ -431,8 +436,11 @@ void debug_object_activate(void *addr, struct debug_obj_descr *descr)
* true or not.
*/
if (debug_object_fixup(descr->fixup_activate, addr,
- ODEBUG_STATE_NOTAVAILABLE))
+ ODEBUG_STATE_NOTAVAILABLE)) {
debug_print_object(&o, "activate");
+ return -EINVAL;
+ }
+ return 0;
}
/**