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Diffstat (limited to 'lib/debugobjects.c')
-rw-r--r--lib/debugobjects.c92
1 files changed, 53 insertions, 39 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 519b5a10fd70..a8e12601eb37 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -269,16 +269,15 @@ static void debug_print_object(struct debug_obj *obj, char *msg)
* Try to repair the damage, so we have a better chance to get useful
* debug output.
*/
-static int
-debug_object_fixup(int (*fixup)(void *addr, enum debug_obj_state state),
+static bool
+debug_object_fixup(bool (*fixup)(void *addr, enum debug_obj_state state),
void * addr, enum debug_obj_state state)
{
- int fixed = 0;
-
- if (fixup)
- fixed = fixup(addr, state);
- debug_objects_fixups += fixed;
- return fixed;
+ if (fixup && fixup(addr, state)) {
+ debug_objects_fixups++;
+ return true;
+ }
+ return false;
}
static void debug_object_is_on_stack(void *addr, int onstack)
@@ -416,7 +415,7 @@ int debug_object_activate(void *addr, struct debug_obj_descr *descr)
state = obj->state;
raw_spin_unlock_irqrestore(&db->lock, flags);
ret = debug_object_fixup(descr->fixup_activate, addr, state);
- return ret ? -EINVAL : 0;
+ return ret ? 0 : -EINVAL;
case ODEBUG_STATE_DESTROYED:
debug_print_object(obj, "activate");
@@ -432,14 +431,21 @@ int debug_object_activate(void *addr, struct debug_obj_descr *descr)
raw_spin_unlock_irqrestore(&db->lock, flags);
/*
- * This happens when a static object is activated. We
- * let the type specific code decide whether this is
- * true or not.
+ * We are here when a static object is activated. We
+ * let the type specific code confirm whether this is
+ * true or not. if true, we just make sure that the
+ * static object is tracked in the object tracker. If
+ * not, this must be a bug, so we try to fix it up.
*/
- if (debug_object_fixup(descr->fixup_activate, addr,
- ODEBUG_STATE_NOTAVAILABLE)) {
+ if (descr->is_static_object && descr->is_static_object(addr)) {
+ /* track this static object */
+ debug_object_init(addr, descr);
+ debug_object_activate(addr, descr);
+ } else {
debug_print_object(&o, "activate");
- return -EINVAL;
+ ret = debug_object_fixup(descr->fixup_activate, addr,
+ ODEBUG_STATE_NOTAVAILABLE);
+ return ret ? 0 : -EINVAL;
}
return 0;
}
@@ -603,12 +609,18 @@ void debug_object_assert_init(void *addr, struct debug_obj_descr *descr)
raw_spin_unlock_irqrestore(&db->lock, flags);
/*
- * Maybe the object is static. Let the type specific
- * code decide what to do.
+ * Maybe the object is static, and we let the type specific
+ * code confirm. Track this static object if true, else invoke
+ * fixup.
*/
- if (debug_object_fixup(descr->fixup_assert_init, addr,
- ODEBUG_STATE_NOTAVAILABLE))
+ if (descr->is_static_object && descr->is_static_object(addr)) {
+ /* Track this static object */
+ debug_object_init(addr, descr);
+ } else {
debug_print_object(&o, "assert_init");
+ debug_object_fixup(descr->fixup_assert_init, addr,
+ ODEBUG_STATE_NOTAVAILABLE);
+ }
return;
}
@@ -793,11 +805,18 @@ struct self_test {
static __initdata struct debug_obj_descr descr_type_test;
+static bool __init is_static_object(void *addr)
+{
+ struct self_test *obj = addr;
+
+ return obj->static_init;
+}
+
/*
* fixup_init is called when:
* - an active object is initialized
*/
-static int __init fixup_init(void *addr, enum debug_obj_state state)
+static bool __init fixup_init(void *addr, enum debug_obj_state state)
{
struct self_test *obj = addr;
@@ -805,37 +824,31 @@ static int __init fixup_init(void *addr, enum debug_obj_state state)
case ODEBUG_STATE_ACTIVE:
debug_object_deactivate(obj, &descr_type_test);
debug_object_init(obj, &descr_type_test);
- return 1;
+ return true;
default:
- return 0;
+ return false;
}
}
/*
* fixup_activate is called when:
* - an active object is activated
- * - an unknown object is activated (might be a statically initialized object)
+ * - an unknown non-static object is activated
*/
-static int __init fixup_activate(void *addr, enum debug_obj_state state)
+static bool __init fixup_activate(void *addr, enum debug_obj_state state)
{
struct self_test *obj = addr;
switch (state) {
case ODEBUG_STATE_NOTAVAILABLE:
- if (obj->static_init == 1) {
- debug_object_init(obj, &descr_type_test);
- debug_object_activate(obj, &descr_type_test);
- return 0;
- }
- return 1;
-
+ return true;
case ODEBUG_STATE_ACTIVE:
debug_object_deactivate(obj, &descr_type_test);
debug_object_activate(obj, &descr_type_test);
- return 1;
+ return true;
default:
- return 0;
+ return false;
}
}
@@ -843,7 +856,7 @@ static int __init fixup_activate(void *addr, enum debug_obj_state state)
* fixup_destroy is called when:
* - an active object is destroyed
*/
-static int __init fixup_destroy(void *addr, enum debug_obj_state state)
+static bool __init fixup_destroy(void *addr, enum debug_obj_state state)
{
struct self_test *obj = addr;
@@ -851,9 +864,9 @@ static int __init fixup_destroy(void *addr, enum debug_obj_state state)
case ODEBUG_STATE_ACTIVE:
debug_object_deactivate(obj, &descr_type_test);
debug_object_destroy(obj, &descr_type_test);
- return 1;
+ return true;
default:
- return 0;
+ return false;
}
}
@@ -861,7 +874,7 @@ static int __init fixup_destroy(void *addr, enum debug_obj_state state)
* fixup_free is called when:
* - an active object is freed
*/
-static int __init fixup_free(void *addr, enum debug_obj_state state)
+static bool __init fixup_free(void *addr, enum debug_obj_state state)
{
struct self_test *obj = addr;
@@ -869,9 +882,9 @@ static int __init fixup_free(void *addr, enum debug_obj_state state)
case ODEBUG_STATE_ACTIVE:
debug_object_deactivate(obj, &descr_type_test);
debug_object_free(obj, &descr_type_test);
- return 1;
+ return true;
default:
- return 0;
+ return false;
}
}
@@ -917,6 +930,7 @@ out:
static __initdata struct debug_obj_descr descr_type_test = {
.name = "selftest",
+ .is_static_object = is_static_object,
.fixup_init = fixup_init,
.fixup_activate = fixup_activate,
.fixup_destroy = fixup_destroy,