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: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202407050845.zNONqauD-lkp@xxxxxxxxx/ Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> --- Applied over slab/for-next because of the refactoring [1] in that branch. [1] 302a3ea38aec ("mm, slab: move allocation tagging code in the alloc path into a hook") mm/slub.c | 48 +++++++++++++++++++++--------------------------- 1 file changed, 21 insertions(+), 27 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index ce39544acf7c..829a1f08e8a2 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2027,6 +2027,27 @@ static inline bool need_slab_obj_ext(void) return false; } +#else /* CONFIG_SLAB_OBJ_EXT */ + +static int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s, + gfp_t gfp, bool new_slab) +{ + return 0; +} + +static inline void free_slab_obj_exts(struct slab *slab) +{ +} + +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) { @@ -2051,33 +2072,6 @@ prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p) 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, - gfp_t gfp, bool new_slab) -{ - return 0; -} - -static inline void free_slab_obj_exts(struct slab *slab) -{ -} - -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) -{ - return NULL; -} - -#endif /* CONFIG_SLAB_OBJ_EXT */ - -#ifdef CONFIG_MEM_ALLOC_PROFILING - static inline void alloc_tagging_slab_alloc_hook(struct kmem_cache *s, void *object, gfp_t flags) { base-commit: fe4e761669ab4d8b388fdb6e9dbe9a110eed8009 -- 2.45.2.993.g49e7a77208-goog
