linux-kernel - Re: [PATCHv2 14/14] treewide: Decouple cacheflush.h and set

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Date:   Sun, 5 Mar 2017 08:03:08 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Laura Abbott <labbott@...hat.com>
Cc:     kbuild-all@...org, Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Kees Cook <keescook@...omium.org>,
        Mark Rutland <mark.rutland@....com>,
        Arnd Bergmann <arnd@...db.de>, David Airlie <airlied@...ux.ie>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Wim Van Sebroeck <wim@...ana.be>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-watchdog@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jessica Yu <jeyu@...hat.com>, Takashi Iwai <tiwai@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Laura Abbott <labbott@...hat.com>, x86@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCHv2 14/14] treewide: Decouple cacheflush.h and set_memory.h

Hi Laura,

[auto build test ERROR on linus/master]
[also build test ERROR on next-20170303]
[cannot apply to tip/x86/core drm/drm-next v4.10]
[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/Laura-Abbott/set_memory_-functions-header-refactor/20170305-062939
config: i386-allmodconfig (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 >>):

   sound/pci/intel8x0.c: In function 'fill_nocache':
>> sound/pci/intel8x0.c:736:3: error: implicit declaration of function 'set_pages_uc' [-Werror=implicit-function-declaration]
      set_pages_uc(virt_to_page(buf), size);
      ^~~~~~~~~~~~
>> sound/pci/intel8x0.c:738:3: error: implicit declaration of function 'set_pages_wb' [-Werror=implicit-function-declaration]
      set_pages_wb(virt_to_page(buf), size);
      ^~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   sound/x86/intel_hdmi_audio.c: In function 'had_pcm_hw_params':
>> sound/x86/intel_hdmi_audio.c:1135:11: error: implicit declaration of function 'set_memory_uc' [-Werror=implicit-function-declaration]
     retval = set_memory_uc(addr, pages);
              ^~~~~~~~~~~~~
   sound/x86/intel_hdmi_audio.c: In function 'had_pcm_hw_free':
>> sound/x86/intel_hdmi_audio.c:1163:3: error: implicit declaration of function 'set_memory_wb' [-Werror=implicit-function-declaration]
      set_memory_wb(addr, pages);
      ^~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/set_pages_uc +736 sound/pci/intel8x0.c

631dd1a8 Justin P. Mattock 2010-10-18  730   *	http://download.intel.com/design/chipsets/specupdt/24505108.pdf
^1da177e Linus Torvalds    2005-04-16  731   */
^1da177e Linus Torvalds    2005-04-16  732  static void fill_nocache(void *buf, int size, int nocache)
^1da177e Linus Torvalds    2005-04-16  733  {
^1da177e Linus Torvalds    2005-04-16  734  	size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
6d238cc4 Arjan van de Ven  2008-01-30  735  	if (nocache)
6d238cc4 Arjan van de Ven  2008-01-30 @736  		set_pages_uc(virt_to_page(buf), size);
6d238cc4 Arjan van de Ven  2008-01-30  737  	else
6d238cc4 Arjan van de Ven  2008-01-30 @738  		set_pages_wb(virt_to_page(buf), size);
^1da177e Linus Torvalds    2005-04-16  739  }
^1da177e Linus Torvalds    2005-04-16  740  #else
6d238cc4 Arjan van de Ven  2008-01-30  741  #define fill_nocache(buf, size, nocache) do { ; } while (0)

:::::: The code at line 736 was first introduced by commit
:::::: 6d238cc4dc8a36a3915c26202fe49f58a0683fb9 x86: convert CPA users to the new set_page_ API

:::::: TO: Arjan van de Ven <arjan@...radead.org>
:::::: CC: Ingo Molnar <mingo@...e.hu>

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