linux-kernel - Re: [PATCH v3 3/7] x86: Implement memset16, memset32 & memset64

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Date:   Sun, 26 Mar 2017 15:44:42 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        linux-fbdev@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        x86@...nel.org, linux-mips@...ux-mips.org,
        linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
        Minchan Kim <minchan@...nel.org>,
        Matthew Wilcox <mawilcox@...rosoft.com>
Subject: Re: [PATCH v3 3/7] x86: Implement memset16, memset32 & memset64

Hi Matthew,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.11-rc3 next-20170324]
[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/Matthew-Wilcox/Add-memsetN-functions/20170326-140108
config: i386-randconfig-x077-201713 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> lib/string.c:733:7: error: redefinition of 'memset32'
    void *memset32(uint32_t *s, uint32_t v, size_t count)
          ^~~~~~~~
   In file included from arch/x86/include/asm/string.h:2:0,
                    from include/linux/string.h:18,
                    from lib/string.c:23:
   arch/x86/include/asm/string_32.h:347:21: note: previous definition of 'memset32' was here
    static inline void *memset32(uint32_t *s, uint32_t v, size_t n)
                        ^~~~~~~~

vim +/memset32 +733 lib/string.c

9114f9de Matthew Wilcox 2017-03-24  717  	return s;
9114f9de Matthew Wilcox 2017-03-24  718  }
9114f9de Matthew Wilcox 2017-03-24  719  EXPORT_SYMBOL(memset16);
9114f9de Matthew Wilcox 2017-03-24  720  #endif
9114f9de Matthew Wilcox 2017-03-24  721  
9114f9de Matthew Wilcox 2017-03-24  722  #ifndef __HAVE_ARCH_MEMSET32
9114f9de Matthew Wilcox 2017-03-24  723  /**
9114f9de Matthew Wilcox 2017-03-24  724   * memset32() - Fill a memory area with a uint32_t
9114f9de Matthew Wilcox 2017-03-24  725   * @s: Pointer to the start of the area.
9114f9de Matthew Wilcox 2017-03-24  726   * @v: The value to fill the area with
9114f9de Matthew Wilcox 2017-03-24  727   * @count: The number of values to store
9114f9de Matthew Wilcox 2017-03-24  728   *
9114f9de Matthew Wilcox 2017-03-24  729   * Differs from memset() in that it fills with a uint32_t instead
9114f9de Matthew Wilcox 2017-03-24  730   * of a byte.  Remember that @count is the number of uint32_ts to
9114f9de Matthew Wilcox 2017-03-24  731   * store, not the number of bytes.
9114f9de Matthew Wilcox 2017-03-24  732   */
9114f9de Matthew Wilcox 2017-03-24 @733  void *memset32(uint32_t *s, uint32_t v, size_t count)
9114f9de Matthew Wilcox 2017-03-24  734  {
9114f9de Matthew Wilcox 2017-03-24  735  	uint32_t *xs = s;
9114f9de Matthew Wilcox 2017-03-24  736  
9114f9de Matthew Wilcox 2017-03-24  737  	while (count--)
9114f9de Matthew Wilcox 2017-03-24  738  		*xs++ = v;
9114f9de Matthew Wilcox 2017-03-24  739  	return s;
9114f9de Matthew Wilcox 2017-03-24  740  }
9114f9de Matthew Wilcox 2017-03-24  741  EXPORT_SYMBOL(memset32);

:::::: The code at line 733 was first introduced by commit
:::::: 9114f9de5005f9468370ed1cb1b5b841b10d3bad Add multibyte memset functions

:::::: TO: Matthew Wilcox <mawilcox@...rosoft.com>
:::::: CC: 0day robot <fengguang.wu@...el.com>

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