linux-kernel - [paulmck-rcu:dev.2023.07.24a 26/26] include/linux/init.h:149:33: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__ro_after

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Message-ID: <202307270622.15fzt0V1-lkp@intel.com>
Date:   Thu, 27 Jul 2023 06:11:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [paulmck-rcu:dev.2023.07.24a 26/26] include/linux/init.h:149:33:
 error: expected '=', ',', ';', 'asm' or '__attribute__' before
 '__ro_after_init'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2023.07.24a
head:   aaeb7f70ca6fef20998ac6aa580e42ca7b85fb7f
commit: aaeb7f70ca6fef20998ac6aa580e42ca7b85fb7f [26/26] squash! fs/proc: Add /proc/cmdline_load for boot loader arguments
config: parisc-randconfig-r006-20230726 (https://download.01.org/0day-ci/archive/20230727/202307270622.15fzt0V1-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230727/202307270622.15fzt0V1-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307270622.15fzt0V1-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from arch/parisc/include/asm/alternative.h:18,
                    from arch/parisc/include/asm/cache.h:9,
                    from include/linux/cache.h:6,
                    from include/linux/slab.h:15,
                    from drivers/w1/w1_netlink.c:6:
>> include/linux/init.h:149:33: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__ro_after_init'
     149 | extern char boot_command_line[] __ro_after_init;
         |                                 ^~~~~~~~~~~~~~~
--
   In file included from include/linux/init.h:116,
                    from arch/parisc/include/asm/alternative.h:18,
                    from arch/parisc/include/asm/cache.h:9,
                    from arch/parisc/include/asm/page.h:23,
                    from arch/parisc/include/asm/pgtable.h:5,
                    from include/linux/pgtable.h:6,
                    from arch/parisc/include/asm/io.h:6,
                    from drivers/w1/w1_io.c:6:
>> include/linux/cache.h:72:31: error: 'L1_CACHE_SHIFT' undeclared here (not in a function); did you mean 'L1_CACHE_ALIGN'?
      72 | #define INTERNODE_CACHE_SHIFT L1_CACHE_SHIFT
         |                               ^~~~~~~~~~~~~~
   include/linux/cache.h:78:42: note: in expansion of macro 'INTERNODE_CACHE_SHIFT'
      78 |         __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT))))
         |                                          ^~~~~~~~~~~~~~~~~~~~~
   include/linux/cache.h:95:3: note: in expansion of macro '____cacheline_internodealigned_in_smp'
      95 | } ____cacheline_internodealigned_in_smp;
         |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/parisc/include/asm/cache.h:23: warning: "ARCH_DMA_MINALIGN" redefined
      23 | #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
         | 
   include/linux/cache.h:104: note: this is the location of the previous definition
     104 | #define ARCH_DMA_MINALIGN __alignof__(unsigned long long)
         | 
>> arch/parisc/include/asm/cache.h:25: warning: "__read_mostly" redefined
      25 | #define __read_mostly __section(".data..read_mostly")
         | 
   include/linux/cache.h:28: note: this is the location of the previous definition
      28 | #define __read_mostly
         | 


vim +149 include/linux/init.h

   146	
   147	/* Defined in init/main.c */
   148	extern int do_one_initcall(initcall_t fn);
 > 149	extern char boot_command_line[] __ro_after_init;
   150	extern char *saved_command_line;
   151	extern unsigned int saved_command_line_len;
   152	extern unsigned int reset_devices;
   153	extern char saved_bootconfig_string[];
   154	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki