tree: https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git slub-percpu-caches-v1 head: 23793c9cd4b2fc31144dba68dd67554b8e4308e9 commit: 88f3fc9382220fb76fbd700a74cce623dadf8138 [2/5] mm, slub: add opt-in slub_percpu_array config: loongarch-randconfig-r021-20230808 (https://download.01.org/0day-ci/archive/20230808/202308082248.9OaLeTUo-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230808/202308082248.9OaLeTUo-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308082248.9OaLeTUo-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): mm/slub.c: In function 'slab_alloc_node': >> mm/slub.c:3568:26: error: implicit declaration of function 'alloc_from_pca' [-Werror=implicit-function-declaration] 3568 | object = alloc_from_pca(s); | ^~~~~~~~~~~~~~ >> mm/slub.c:3568:24: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 3568 | object = alloc_from_pca(s); | ^ cc1: some warnings being treated as errors vim +/alloc_from_pca +3568 mm/slub.c 3541 3542 /* 3543 * Inlined fastpath so that allocation functions (kmalloc, kmem_cache_alloc) 3544 * have the fastpath folded into their functions. So no function call 3545 * overhead for requests that can be satisfied on the fastpath. 3546 * 3547 * The fastpath works by first checking if the lockless freelist can be used. 3548 * If not then __slab_alloc is called for slow processing. 3549 * 3550 * Otherwise we can simply pick the next object from the lockless free list. 3551 */ 3552 static __fastpath_inline void *slab_alloc_node(struct kmem_cache *s, struct list_lru *lru, 3553 gfp_t gfpflags, int node, unsigned long addr, size_t orig_size) 3554 { 3555 void *object; 3556 struct obj_cgroup *objcg = NULL; 3557 bool init = false; 3558 3559 s = slab_pre_alloc_hook(s, lru, &objcg, 1, gfpflags); 3560 if (!s) 3561 return NULL; 3562 3563 object = kfence_alloc(s, orig_size, gfpflags); 3564 if (unlikely(object)) 3565 goto out; 3566 3567 if (s->cpu_array) > 3568 object = alloc_from_pca(s); 3569 3570 if (!object) 3571 object = __slab_alloc_node(s, gfpflags, node, addr, orig_size); 3572 3573 maybe_wipe_obj_freeptr(s, object); 3574 init = slab_want_init_on_alloc(gfpflags, s); 3575 3576 out: 3577 /* 3578 * When init equals 'true', like for kzalloc() family, only 3579 * @orig_size bytes might be zeroed instead of s->object_size 3580 */ 3581 slab_post_alloc_hook(s, objcg, gfpflags, 1, &object, init, orig_size); 3582 3583 return object; 3584 } 3585 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
