diff options
Diffstat (limited to 'lib/debugobjects.c')
| -rw-r--r-- | lib/debugobjects.c | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/lib/debugobjects.c b/lib/debugobjects.c index fe4557955d97..9e14ae02306b 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -19,6 +19,7 @@ #include <linux/slab.h> #include <linux/hash.h> #include <linux/kmemleak.h> +#include <linux/cpu.h> #define ODEBUG_HASH_BITS 14 #define ODEBUG_HASH_SIZE (1 << ODEBUG_HASH_BITS) @@ -90,7 +91,7 @@ static int debug_objects_pool_size __read_mostly = ODEBUG_POOL_SIZE; static int debug_objects_pool_min_level __read_mostly = ODEBUG_POOL_MIN_LEVEL; -static struct debug_obj_descr *descr_test __read_mostly; +static const struct debug_obj_descr *descr_test __read_mostly; static struct kmem_cache *obj_cache __read_mostly; /* @@ -223,7 +224,7 @@ static struct debug_obj *__alloc_object(struct hlist_head *list) * Must be called with interrupts disabled. */ static struct debug_obj * -alloc_object(void *addr, struct debug_bucket *b, struct debug_obj_descr *descr) +alloc_object(void *addr, struct debug_bucket *b, const struct debug_obj_descr *descr) { struct debug_percpu_free *percpu_pool = this_cpu_ptr(&percpu_obj_pool); struct debug_obj *obj; @@ -433,6 +434,25 @@ static void free_object(struct debug_obj *obj) } } +#ifdef CONFIG_HOTPLUG_CPU +static int object_cpu_offline(unsigned int cpu) +{ + struct debug_percpu_free *percpu_pool; + struct hlist_node *tmp; + struct debug_obj *obj; + + /* Remote access is safe as the CPU is dead already */ + percpu_pool = per_cpu_ptr(&percpu_obj_pool, cpu); + hlist_for_each_entry_safe(obj, tmp, &percpu_pool->free_objs, node) { + hlist_del(&obj->node); + kmem_cache_free(obj_cache, obj); + } + percpu_pool->obj_free = 0; + + return 0; +} +#endif + /* * We run out of memory. That means we probably have tons of objects * allocated. @@ -475,7 +495,7 @@ 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; + const struct debug_obj_descr *descr = obj->descr; static int limit; if (limit < 5 && descr != descr_test) { @@ -529,7 +549,7 @@ static void debug_object_is_on_stack(void *addr, int onstack) } static void -__debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack) +__debug_object_init(void *addr, const struct debug_obj_descr *descr, int onstack) { enum debug_obj_state state; bool check_stack = false; @@ -587,7 +607,7 @@ __debug_object_init(void *addr, struct debug_obj_descr *descr, int onstack) * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_init(void *addr, struct debug_obj_descr *descr) +void debug_object_init(void *addr, const struct debug_obj_descr *descr) { if (!debug_objects_enabled) return; @@ -602,7 +622,7 @@ EXPORT_SYMBOL_GPL(debug_object_init); * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_init_on_stack(void *addr, struct debug_obj_descr *descr) +void debug_object_init_on_stack(void *addr, const struct debug_obj_descr *descr) { if (!debug_objects_enabled) return; @@ -617,7 +637,7 @@ EXPORT_SYMBOL_GPL(debug_object_init_on_stack); * @descr: pointer to an object specific debug description structure * Returns 0 for success, -EINVAL for check failed. */ -int debug_object_activate(void *addr, struct debug_obj_descr *descr) +int debug_object_activate(void *addr, const struct debug_obj_descr *descr) { enum debug_obj_state state; struct debug_bucket *db; @@ -695,7 +715,7 @@ EXPORT_SYMBOL_GPL(debug_object_activate); * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_deactivate(void *addr, struct debug_obj_descr *descr) +void debug_object_deactivate(void *addr, const struct debug_obj_descr *descr) { struct debug_bucket *db; struct debug_obj *obj; @@ -747,7 +767,7 @@ EXPORT_SYMBOL_GPL(debug_object_deactivate); * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_destroy(void *addr, struct debug_obj_descr *descr) +void debug_object_destroy(void *addr, const struct debug_obj_descr *descr) { enum debug_obj_state state; struct debug_bucket *db; @@ -797,7 +817,7 @@ EXPORT_SYMBOL_GPL(debug_object_destroy); * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_free(void *addr, struct debug_obj_descr *descr) +void debug_object_free(void *addr, const struct debug_obj_descr *descr) { enum debug_obj_state state; struct debug_bucket *db; @@ -838,7 +858,7 @@ EXPORT_SYMBOL_GPL(debug_object_free); * @addr: address of the object * @descr: pointer to an object specific debug description structure */ -void debug_object_assert_init(void *addr, struct debug_obj_descr *descr) +void debug_object_assert_init(void *addr, const struct debug_obj_descr *descr) { struct debug_bucket *db; struct debug_obj *obj; @@ -886,7 +906,7 @@ EXPORT_SYMBOL_GPL(debug_object_assert_init); * @next: state to move to if expected state is found */ void -debug_object_active_state(void *addr, struct debug_obj_descr *descr, +debug_object_active_state(void *addr, const struct debug_obj_descr *descr, unsigned int expect, unsigned int next) { struct debug_bucket *db; @@ -934,7 +954,7 @@ EXPORT_SYMBOL_GPL(debug_object_active_state); static void __debug_check_no_obj_freed(const void *address, unsigned long size) { unsigned long flags, oaddr, saddr, eaddr, paddr, chunks; - struct debug_obj_descr *descr; + const struct debug_obj_descr *descr; enum debug_obj_state state; struct debug_bucket *db; struct hlist_node *tmp; @@ -1052,7 +1072,7 @@ struct self_test { unsigned long dummy2[3]; }; -static __initdata struct debug_obj_descr descr_type_test; +static __initconst const struct debug_obj_descr descr_type_test; static bool __init is_static_object(void *addr) { @@ -1177,7 +1197,7 @@ out: return res; } -static __initdata struct debug_obj_descr descr_type_test = { +static __initconst const struct debug_obj_descr descr_type_test = { .name = "selftest", .is_static_object = is_static_object, .fixup_init = fixup_init, @@ -1367,6 +1387,11 @@ void __init debug_objects_mem_init(void) } else debug_objects_selftest(); +#ifdef CONFIG_HOTPLUG_CPU + cpuhp_setup_state_nocalls(CPUHP_DEBUG_OBJ_DEAD, "object:offline", NULL, + object_cpu_offline); +#endif + /* * Increase the thresholds for allocating and freeing objects * according to the number of possible CPUs available in the system. |