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

[kernel test robot]

Hi Yunhui,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on dennis-percpu/for-next v6.17-rc2 next-20250820]
[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/20250819-215256
base:   linus/master
patch link:    https://lore.kernel.org/r/20250819135007.85646-3-cuiyunhui%40bytedance.com
patch subject: [PATCH 2/2] riscv: introduce percpu.h into include/asm
config: riscv-allnoconfig (https://download.01.org/0day-ci/archive/20250821/202508210101.WySkXlSZ-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/20250821/202508210101.WySkXlSZ-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508210101.WySkXlSZ-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/atomic.h:80,
                    from include/linux/cpumask.h:14,
                    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:131:17: note: in expansion of macro 'cmpxchg128_local'
     131 |         ret__ = cmpxchg128_local(ptr__, old__, new__);                  \
         |                 ^~~~~~~~~~~~~~~~
   include/asm-generic/percpu.h:108:17: note: in expansion of macro 'this_cpu_cmpxchg128'
     108 |         __val = _cmpxchg(pcp, __old, nval);                             \
         |                 ^~~~~~~~
   include/asm-generic/percpu.h:527:9: note: in expansion of macro '__cpu_fallback_try_cmpxchg'
     527 |         __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:3638:16: note: in expansion of macro 'this_cpu_try_cmpxchg_freelist'
    3638 |         return this_cpu_try_cmpxchg_freelist(s->cpu_slab->freelist_tid.full,
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~


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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