Re: [PATCH v2 2/3] riscv: introduce percpu.h into include/asm

From: kernel test robot <lkp@intel.com>
To: Yunhui Cui <cuiyunhui@bytedance.com>,
	aou@eecs.berkeley.edu, alex@ghiti.fr, andii@kernel.org,
	andybnac@gmail.com, apatel@ventanamicro.com, ast@kernel.org,
	ben.dooks@codethink.co.uk, bjorn@kernel.org, bpf@vger.kernel.org,
	charlie@rivosinc.com, cl@gentwo.org, conor.dooley@microchip.com,
	cyrilbur@tenstorrent.com, daniel@iogearbox.net,
	debug@rivosinc.com, dennis@kernel.org, eddyz87@gmail.com,
	haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org,
	kpsingh@kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, linux-riscv@lists.infradead.org,
	linux@rasmusvillemoes.dk, martin.lau@linux.dev,
	palmer@dabbelt.com, pjw@kernel.org, puranjay@kernel.org
Cc: oe-kbuild-all@lists.linux.dev
Subject: Re: [PATCH v2 2/3] riscv: introduce percpu.h into include/asm
Date: Tue, 9 Dec 2025 10:12:47 +0800	[thread overview]
Message-ID: <202512090907.agDhp0Nd-lkp@intel.com> (raw)
In-Reply-To: <20251208034944.73113-3-cuiyunhui@bytedance.com>

Hi Yunhui,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.18 next-20251208]
[cannot apply to bpf-next/net bpf-next/master bpf/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Yunhui-Cui/riscv-remove-irqflags-h-inclusion-in-asm-bitops-h/20251208-115407
base:   linus/master
patch link:    https://lore.kernel.org/r/20251208034944.73113-3-cuiyunhui%40bytedance.com
patch subject: [PATCH v2 2/3] riscv: introduce percpu.h into include/asm
config: riscv-allnoconfig (https://download.01.org/0day-ci/archive/20251209/202512090907.agDhp0Nd-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251209/202512090907.agDhp0Nd-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/202512090907.agDhp0Nd-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/atomic.h:80,
                    from include/linux/cpumask.h:10,
                    from include/linux/smp.h:13,
                    from include/linux/lockdep.h:14,
                    from include/linux/spinlock.h:63,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:7,
                    from include/linux/mm.h:7,
                    from mm/slub.c:13:
   mm/slub.c: In function '__update_cpu_freelist_fast':
>> include/linux/atomic/atomic-arch-fallback.h:414:30: error: implicit declaration of function 'arch_cmpxchg128_local'; did you mean 'arch_cmpxchg64_local'? [-Wimplicit-function-declaration]
     414 | #define raw_cmpxchg128_local arch_cmpxchg128_local
         |                              ^~~~~~~~~~~~~~~~~~~~~
   include/linux/atomic/atomic-instrumented.h:5005:9: note: in expansion of macro 'raw_cmpxchg128_local'
    5005 |         raw_cmpxchg128_local(__ai_ptr, __VA_ARGS__); \
         |         ^~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/percpu.h:231:17: note: in expansion of macro 'cmpxchg128_local'
     231 |         ret__ = cmpxchg128_local(ptr__, old__, new__);                  \
         |                 ^~~~~~~~~~~~~~~~
   include/asm-generic/percpu.h:110:17: note: in expansion of macro 'this_cpu_cmpxchg128'
     110 |         __val = _cmpxchg(pcp, __old, nval);                             \
         |                 ^~~~~~~~
   include/asm-generic/percpu.h:529:9: note: in expansion of macro '__cpu_fallback_try_cmpxchg'
     529 |         __cpu_fallback_try_cmpxchg(pcp, ovalp, nval, this_cpu_cmpxchg128)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/slab.h:24:41: note: in expansion of macro 'this_cpu_try_cmpxchg128'
      24 | #define this_cpu_try_cmpxchg_freelist   this_cpu_try_cmpxchg128
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~
   mm/slub.c:4380:16: note: in expansion of macro 'this_cpu_try_cmpxchg_freelist'
    4380 |         return this_cpu_try_cmpxchg_freelist(s->cpu_slab->freelist_tid,
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +414 include/linux/atomic/atomic-arch-fallback.h

9257959a6e5b4f Mark Rutland 2023-06-05  413  
9257959a6e5b4f Mark Rutland 2023-06-05 @414  #define raw_cmpxchg128_local arch_cmpxchg128_local
e6ce9d741163af Uros Bizjak  2023-04-05  415  

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https://github.com/intel/lkp-tests/wiki