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Message-ID: <202010031001.GlLJ0bsy-lkp@intel.com>
Date:   Sat, 3 Oct 2020 10:58:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org
Subject: include/linux/sched/topology.h:237:9: error: implicit declaration of
 function 'cpu_logical_map'

Hi Rafael,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d3d45f8220d60a0b2aaaacf8fb2be4e6ffd9008e
commit: 5b5642075c317e67ea342a2fb8023a8e754a5002 Merge branches 'pm-em' and 'pm-core'
date:   9 weeks ago
config: mips-randconfig-r024-20201003 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bcd05599d0e53977a963799d6ee4f6e0bc21331b)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b5642075c317e67ea342a2fb8023a8e754a5002
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 5b5642075c317e67ea342a2fb8023a8e754a5002
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

   clang-12: warning: argument unused during compilation: '-mno-branch-likely' [-Wunused-command-line-argument]
   clang-12: warning: argument unused during compilation: '-mno-branch-likely' [-Wunused-command-line-argument]
   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:15:
   In file included from include/linux/socket.h:8:
   In file included from include/linux/uio.h:10:
   In file included from include/crypto/hash.h:11:
   In file included from include/linux/crypto.h:19:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:9:
   include/linux/topology.h:119:9: error: implicit declaration of function 'cpu_logical_map' [-Werror,-Wimplicit-function-declaration]
           return cpu_to_node(raw_smp_processor_id());
                  ^
   arch/mips/include/asm/mach-loongson64/topology.h:7:27: note: expanded from macro 'cpu_to_node'
   #define cpu_to_node(cpu)        (cpu_logical_map(cpu) >> 2)
                                    ^
   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:15:
   In file included from include/linux/socket.h:8:
   In file included from include/linux/uio.h:10:
   In file included from include/crypto/hash.h:11:
   In file included from include/linux/crypto.h:19:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:9:
   include/linux/topology.h:176:9: error: implicit declaration of function 'cpu_logical_map' [-Werror,-Wimplicit-function-declaration]
           return cpu_to_node(cpu);
                  ^
   arch/mips/include/asm/mach-loongson64/topology.h:7:27: note: expanded from macro 'cpu_to_node'
   #define cpu_to_node(cpu)        (cpu_logical_map(cpu) >> 2)
                                    ^
   In file included from arch/mips/kernel/asm-offsets.c:12:
   In file included from include/linux/compat.h:15:
   In file included from include/linux/socket.h:8:
   In file included from include/linux/uio.h:10:
   In file included from include/crypto/hash.h:11:
   In file included from include/linux/crypto.h:19:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:9:
   include/linux/topology.h:210:25: error: implicit declaration of function 'cpu_logical_map' [-Werror,-Wimplicit-function-declaration]
           return cpumask_of_node(cpu_to_node(cpu));
                                  ^
   arch/mips/include/asm/mach-loongson64/topology.h:7:27: note: expanded from macro 'cpu_to_node'
   #define cpu_to_node(cpu)        (cpu_logical_map(cpu) >> 2)
                                    ^
   In file included from arch/mips/kernel/asm-offsets.c:17:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:11:
   In file included from include/linux/genhd.h:36:
   In file included from include/linux/device.h:16:
   In file included from include/linux/energy_model.h:10:
>> include/linux/sched/topology.h:237:9: error: implicit declaration of function 'cpu_logical_map' [-Werror,-Wimplicit-function-declaration]
           return cpu_to_node(task_cpu(p));
                  ^
   arch/mips/include/asm/mach-loongson64/topology.h:7:27: note: expanded from macro 'cpu_to_node'
   #define cpu_to_node(cpu)        (cpu_logical_map(cpu) >> 2)
                                    ^
   arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for function 'output_ptreg_defines' [-Wmissing-prototypes]
   void output_ptreg_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_ptreg_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for function 'output_task_defines' [-Wmissing-prototypes]
   void output_task_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_task_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:93:6: warning: no previous prototype for function 'output_thread_info_defines' [-Wmissing-prototypes]
   void output_thread_info_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:93:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_info_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:110:6: warning: no previous prototype for function 'output_thread_defines' [-Wmissing-prototypes]
   void output_thread_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:110:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:138:6: warning: no previous prototype for function 'output_thread_fpu_defines' [-Wmissing-prototypes]
   void output_thread_fpu_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:138:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_thread_fpu_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:181:6: warning: no previous prototype for function 'output_mm_defines' [-Wmissing-prototypes]
   void output_mm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:181:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_mm_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:242:6: warning: no previous prototype for function 'output_sc_defines' [-Wmissing-prototypes]
   void output_sc_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:242:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_sc_defines(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:255:6: warning: no previous prototype for function 'output_signal_defined' [-Wmissing-prototypes]
   void output_signal_defined(void)
        ^
   arch/mips/kernel/asm-offsets.c:255:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_signal_defined(void)
   ^
   static 
   arch/mips/kernel/asm-offsets.c:348:6: warning: no previous prototype for function 'output_kvm_defines' [-Wmissing-prototypes]
   void output_kvm_defines(void)
        ^
   arch/mips/kernel/asm-offsets.c:348:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void output_kvm_defines(void)
   ^
   static 
   9 warnings and 4 errors generated.
   make[2]: *** [scripts/Makefile.build:114: arch/mips/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1175: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

vim +/cpu_logical_map +237 include/linux/sched/topology.h

36a0df85d2e85e1 Thara Gopinath 2020-02-21  234  
ee6a3d19f15b9b1 Ingo Molnar    2017-02-06  235  static inline int task_node(const struct task_struct *p)
ee6a3d19f15b9b1 Ingo Molnar    2017-02-06  236  {
ee6a3d19f15b9b1 Ingo Molnar    2017-02-06 @237  	return cpu_to_node(task_cpu(p));
ee6a3d19f15b9b1 Ingo Molnar    2017-02-06  238  }
ee6a3d19f15b9b1 Ingo Molnar    2017-02-06  239  

:::::: The code at line 237 was first introduced by commit
:::::: ee6a3d19f15b9b10075481088b8d4537f286d7b4 sched/headers: Remove the <linux/topology.h> include from <linux/sched.h>

:::::: TO: Ingo Molnar <mingo@...nel.org>
:::::: CC: Ingo Molnar <mingo@...nel.org>

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

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