tree:   https://github.com/0day-ci/linux/commits/Kangmin-Park/Introducing-lockless-cache-built-on-top-of-slab-allocator/20210922-153019
head:   c40b46ce7950275afb58f344217952e6b29dd9fd
commit: c40b46ce7950275afb58f344217952e6b29dd9fd Introducing lockless cache built on top of slab allocator
date:   6 days ago
config: microblaze-buildonly-randconfig-r004-20210927 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/c40b46ce7950275afb58f344217952e6b29dd9fd
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Kangmin-Park/Introducing-lockless-cache-built-on-top-of-slab-allocator/20210922-153019
        git checkout c40b46ce7950275afb58f344217952e6b29dd9fd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   net/core/skbuff.c: In function 'napi_skb_cache_get':
>> net/core/skbuff.c:177:33: error: implicit declaration of function 'kmem_cache_alloc_cached'; did you mean 'kmem_cache_alloc_trace'? [-Werror=implicit-function-declaration]
     177 |                 nc->skb_cache = kmem_cache_alloc_cached(skbuff_head_cache,
         |                                 ^~~~~~~~~~~~~~~~~~~~~~~
         |                                 kmem_cache_alloc_trace
>> net/core/skbuff.c:178:70: error: 'SLB_LOCKLESS_CACHE' undeclared (first use in this function)
     178 |                                                         GFP_ATOMIC | SLB_LOCKLESS_CACHE);
         |                                                                      ^~~~~~~~~~~~~~~~~~
   net/core/skbuff.c:178:70: note: each undeclared identifier is reported only once for each function it appears in
   In file included from include/asm-generic/percpu.h:7,
                    from ./arch/microblaze/include/generated/asm/percpu.h:1,
                    from include/linux/irqflags.h:17,
                    from include/asm-generic/bitops.h:14,
                    from ./arch/microblaze/include/generated/asm/bitops.h:1,
                    from include/linux/bitops.h:33,
                    from include/linux/kernel.h:12,
                    from include/linux/list.h:9,
                    from include/linux/module.h:12,
                    from net/core/skbuff.c:37:
>> include/linux/percpu-defs.h:219:59: error: invalid use of undefined type 'struct kmem_cache'
     219 |         const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL;    \
         |                                                           ^
   include/linux/percpu-defs.h:259:9: note: in expansion of macro '__verify_pcpu_ptr'
     259 |         __verify_pcpu_ptr(__p);                                         \
         |         ^~~~~~~~~~~~~~~~~
   include/linux/percpu-defs.h:263:49: note: in expansion of macro 'VERIFY_PERCPU_PTR'
     263 | #define per_cpu_ptr(ptr, cpu)   ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
         |                                                 ^~~~~~~~~~~~~~~~~
   include/linux/percpu-defs.h:264:33: note: in expansion of macro 'per_cpu_ptr'
     264 | #define raw_cpu_ptr(ptr)        per_cpu_ptr(ptr, 0)
         |                                 ^~~~~~~~~~~
   include/linux/percpu-defs.h:265:33: note: in expansion of macro 'raw_cpu_ptr'
     265 | #define this_cpu_ptr(ptr)       raw_cpu_ptr(ptr)
         |                                 ^~~~~~~~~~~
   net/core/skbuff.c:179:33: note: in expansion of macro 'this_cpu_ptr'
     179 |                 nc->skb_count = this_cpu_ptr(skbuff_head_cache)->size;
         |                                 ^~~~~~~~~~~~
>> net/core/skbuff.c:179:64: error: invalid use of undefined type 'struct kmem_cache'
     179 |                 nc->skb_count = this_cpu_ptr(skbuff_head_cache)->size;
         |                                                                ^~
   cc1: all warnings being treated as errors


vim +177 net/core/skbuff.c

   167	
   168	static struct sk_buff *napi_skb_cache_get(void)
   169	{
   170		struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache);
   171		struct sk_buff *skb;
   172	
   173		if (unlikely(!nc->skb_count)) {
   174			/* kmem_cache_alloc_cached should be changed to return the size of
   175			 * the allocated cache
   176			 */
 > 177			nc->skb_cache = kmem_cache_alloc_cached(skbuff_head_cache,
 > 178								GFP_ATOMIC | SLB_LOCKLESS_CACHE);
 > 179			nc->skb_count = this_cpu_ptr(skbuff_head_cache)->size;
   180		}
   181	
   182		if (unlikely(!nc->skb_count))
   183			return NULL;
   184	
   185		skb = nc->skb_cache[--nc->skb_count];
   186		kasan_unpoison_object_data(skbuff_head_cache, skb);
   187	
   188		return skb;
   189	}
   190	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org