slub: Get rid of slab_free_hook_irq()

[pandora-kernel.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index e15aa7f..bae7a5c 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -807,14 +807,24 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, void
 static inline void slab_free_hook(struct kmem_cache *s, void *x)
 {
        kmemleak_free_recursive(x, s->flags);
-}
 
-static inline void slab_free_hook_irq(struct kmem_cache *s, void *object)
-{
-       kmemcheck_slab_free(s, object, s->objsize);
-       debug_check_no_locks_freed(object, s->objsize);
-       if (!(s->flags & SLAB_DEBUG_OBJECTS))
-               debug_check_no_obj_freed(object, s->objsize);
+       /*
+        * Trouble is that we may no longer disable interupts in the fast path
+        * So in order to make the debug calls that expect irqs to be
+        * disabled we need to disable interrupts temporarily.
+        */
+#if defined(CONFIG_KMEMCHECK) || defined(CONFIG_LOCKDEP)
+       {
+               unsigned long flags;
+
+               local_irq_save(flags);
+               kmemcheck_slab_free(s, x, s->objsize);
+               debug_check_no_locks_freed(x, s->objsize);
+               if (!(s->flags & SLAB_DEBUG_OBJECTS))
+                       debug_check_no_obj_freed(x, s->objsize);
+               local_irq_restore(flags);
+       }
+#endif
 }
 
 /*
@@ -1101,9 +1111,6 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags,
 
 static inline void slab_free_hook(struct kmem_cache *s, void *x) {}
 
-static inline void slab_free_hook_irq(struct kmem_cache *s,
-               void *object) {}
-
 #endif /* CONFIG_SLUB_DEBUG */
 
 /*
@@ -1909,8 +1916,6 @@ static __always_inline void slab_free(struct kmem_cache *s,
        local_irq_save(flags);
        c = __this_cpu_ptr(s->cpu_slab);
 
-       slab_free_hook_irq(s, x);
-
        if (likely(page == c->page && c->node != NUMA_NO_NODE)) {
                set_freepointer(s, object, c->freelist);
                c->freelist = object;