linux-kernel - Re: [PATCH 1/1] mm/page_owner: ignore everything below the IRQ entry point

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Date:   Tue, 5 Dec 2017 14:05:35 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Maninder Singh <maninder1.s@...sung.com>
Cc:     kbuild-all@...org, aryabinin@...tuozzo.com, glider@...gle.com,
        vyukov@...gle.com, mbenes@...e.cz, tglx@...utronix.de,
        pombredanne@...b.com, mingo@...nel.org, gregkh@...uxfoundation.org,
        jpoimboe@...hat.com, akpm@...ux-foundation.org, vbabka@...e.cz,
        sfr@...b.auug.org.au, mhocko@...e.com,
        linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, a.sahrawat@...sung.com, pankaj.m@...sung.com,
        Maninder Singh <maninder1.s@...sung.com>,
        Vaneet Narang <v.narang@...sung.com>
Subject: Re: [PATCH 1/1] mm/page_owner: ignore everything below the IRQ entry
 point

Hi Maninder,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.15-rc2 next-20171204]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Maninder-Singh/mm-page_owner-ignore-everything-below-the-IRQ-entry-point/20171205-122901
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: tile-allmodconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 5.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=tile 

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

   In file included from include/linux/interrupt.h:22:0,
                    from include/linux/kernel_stat.h:9,
                    from mm//swap.c:18:
>> arch/tile/include/asm/sections.h:18:29: error: redefinition of 'arch_is_kernel_data'
    #define arch_is_kernel_data arch_is_kernel_data
                                ^
>> arch/tile/include/asm/sections.h:38:19: note: in expansion of macro 'arch_is_kernel_data'
    static inline int arch_is_kernel_data(unsigned long addr)
                      ^
   In file included from include/linux/stacktrace.h:6:0,
                    from include/linux/lockdep.h:29,
                    from include/linux/spinlock_types.h:18,
                    from include/linux/spinlock.h:82,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:6,
                    from include/linux/mm.h:10,
                    from mm//swap.c:16:
   include/asm-generic/sections.h:70:19: note: previous definition of 'arch_is_kernel_data' was here
    static inline int arch_is_kernel_data(unsigned long addr)
                      ^

vim +/arch_is_kernel_data +18 arch/tile/include/asm/sections.h

867e359b Chris Metcalf 2010-05-28  17  
867e359b Chris Metcalf 2010-05-28 @18  #define arch_is_kernel_data arch_is_kernel_data
867e359b Chris Metcalf 2010-05-28  19  
867e359b Chris Metcalf 2010-05-28  20  #include <asm-generic/sections.h>
867e359b Chris Metcalf 2010-05-28  21  
4a556f4f Chris Metcalf 2013-08-07  22  extern char vdso_start[], vdso_end[];
4a556f4f Chris Metcalf 2013-08-07  23  #ifdef CONFIG_COMPAT
4a556f4f Chris Metcalf 2013-08-07  24  extern char vdso32_start[], vdso32_end[];
4a556f4f Chris Metcalf 2013-08-07  25  #endif
0707ad30 Chris Metcalf 2010-06-25  26  
0707ad30 Chris Metcalf 2010-06-25  27  /* Not exactly sections, but PC comparison points in the code. */
0707ad30 Chris Metcalf 2010-06-25  28  extern char __rt_sigreturn[], __rt_sigreturn_end[];
2f9ac29e Chris Metcalf 2013-08-06  29  #ifdef __tilegx__
2f9ac29e Chris Metcalf 2013-08-06  30  extern char __start_unalign_asm_code[], __end_unalign_asm_code[];
2f9ac29e Chris Metcalf 2013-08-06  31  #else
0707ad30 Chris Metcalf 2010-06-25  32  extern char sys_cmpxchg[], __sys_cmpxchg_end[];
0707ad30 Chris Metcalf 2010-06-25  33  extern char __sys_cmpxchg_grab_lock[];
0707ad30 Chris Metcalf 2010-06-25  34  extern char __start_atomic_asm_code[], __end_atomic_asm_code[];
0707ad30 Chris Metcalf 2010-06-25  35  #endif
867e359b Chris Metcalf 2010-05-28  36  
40a3b8df Jiang Liu     2013-07-03  37  /* Handle the discontiguity between _sdata and _text. */
867e359b Chris Metcalf 2010-05-28 @38  static inline int arch_is_kernel_data(unsigned long addr)
867e359b Chris Metcalf 2010-05-28  39  {
867e359b Chris Metcalf 2010-05-28  40  	return addr >= (unsigned long)_sdata &&
867e359b Chris Metcalf 2010-05-28  41  		addr < (unsigned long)_end;
867e359b Chris Metcalf 2010-05-28  42  }
867e359b Chris Metcalf 2010-05-28  43  

:::::: The code at line 18 was first introduced by commit
:::::: 867e359b97c970a60626d5d76bbe2a8fadbf38fb arch/tile: core support for Tilera 32-bit chips.

:::::: TO: Chris Metcalf <cmetcalf@...era.com>
:::::: CC: Chris Metcalf <cmetcalf@...era.com>

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