* [vbabka:slub-percpu-caches-v1 2/5] mm/slub.c:3568:12: error: call to undeclared function 'alloc_from_pca'; ISO C99 and later do not support implicit function declarations
@ 2023-08-08 13:12 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-08-08 13:12 UTC (permalink / raw)
To: Vlastimil Babka; +Cc: llvm, oe-kbuild-all, linux-mm
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: hexagon-randconfig-r016-20230808 (https://download.01.org/0day-ci/archive/20230808/202308082130.CSS5uQs2-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230808/202308082130.CSS5uQs2-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308082130.CSS5uQs2-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from mm/slub.c:14:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from mm/slub.c:14:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from mm/slub.c:14:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
mm/slub.c:2351:15: warning: variable 'partial_slabs' set but not used [-Wunused-but-set-variable]
2351 | unsigned int partial_slabs = 0;
| ^
>> mm/slub.c:3568:12: error: call to undeclared function 'alloc_from_pca'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
3568 | object = alloc_from_pca(s);
| ^
>> mm/slub.c:3568:10: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
3568 | object = alloc_from_pca(s);
| ^ ~~~~~~~~~~~~~~~~~
7 warnings and 2 errors generated.
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
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2023-08-08 13:12 [vbabka:slub-percpu-caches-v1 2/5] mm/slub.c:3568:12: error: call to undeclared function 'alloc_from_pca'; ISO C99 and later do not support implicit function declarations kernel test robot
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