Commit 7b1fdf2b authored by Suren Baghdasaryan's avatar Suren Baghdasaryan Committed by Vlastimil Babka
Browse files

mm, slab: move prepare_slab_obj_exts_hook under CONFIG_MEM_ALLOC_PROFILING 



The only place prepare_slab_obj_exts_hook() is currently being used is
from alloc_tagging_slab_alloc_hook() when CONFIG_MEM_ALLOC_PROFILING=y.
Move its definition under CONFIG_MEM_ALLOC_PROFILING to prevent unused
function warning for CONFIG_SLAB_OBJ_EXT=n case.

Reported-by: default avatarkernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407050845.zNONqauD-lkp@intel.com/


Signed-off-by: default avatarSuren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: default avatarXiongwei Song <xiongwei.song@linux.dev>
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
parent 302a3ea3

mm/slub.c

+21 −27
Original line number Diff line number Diff line
@@ -2009,30 +2009,6 @@ static inline bool need_slab_obj_ext(void) 
	return false;

}



static inline struct slabobj_ext *

prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p)

{

	struct slab *slab;



	if (!p)

		return NULL;



	if (s->flags & (SLAB_NO_OBJ_EXT | SLAB_NOLEAKTRACE))

		return NULL;



	if (flags & __GFP_NO_OBJ_EXT)

		return NULL;



	slab = virt_to_slab(p);

	if (!slab_obj_exts(slab) &&

	    WARN(alloc_slab_obj_exts(slab, s, flags, false),

		 "%s, %s: Failed to create slab extension vector!\n",

		 __func__, s->name))

		return NULL;



	return slab_obj_exts(slab) + obj_to_index(s, slab, p);

}



#else /* CONFIG_SLAB_OBJ_EXT */



static int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
@@ -2050,15 +2026,33 @@ static inline bool need_slab_obj_ext(void) 
	return false;

}



#endif /* CONFIG_SLAB_OBJ_EXT */



#ifdef CONFIG_MEM_ALLOC_PROFILING



static inline struct slabobj_ext *

prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p)

{

	struct slab *slab;



	if (!p)

		return NULL;

}



#endif /* CONFIG_SLAB_OBJ_EXT */

	if (s->flags & (SLAB_NO_OBJ_EXT | SLAB_NOLEAKTRACE))

		return NULL;



#ifdef CONFIG_MEM_ALLOC_PROFILING

	if (flags & __GFP_NO_OBJ_EXT)

		return NULL;



	slab = virt_to_slab(p);

	if (!slab_obj_exts(slab) &&

	    WARN(alloc_slab_obj_exts(slab, s, flags, false),

		 "%s, %s: Failed to create slab extension vector!\n",

		 __func__, s->name))

		return NULL;



	return slab_obj_exts(slab) + obj_to_index(s, slab, p);

}



static inline void

alloc_tagging_slab_alloc_hook(struct kmem_cache *s, void *object, gfp_t flags)