linux-kernel - Re: [PATCH 2/2] sparc64: Fix pagetable freeing for hugepage regions

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Message-ID: <201606231051.bjnCP3zX%fengguang.wu@intel.com>
Date:	Thu, 23 Jun 2016 10:38:09 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Nitin Gupta <nitin.m.gupta@...cle.com>
Cc:	kbuild-all@...org, "David S. Miller" <davem@...emloft.net>,
	Nitin Gupta <nitin.m.gupta@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Zhang Zhen <zhenzhang.zhang@...wei.com>,
	Dominik Dingel <dingel@...ux.vnet.ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Mike Kravetz <mike.kravetz@...cle.com>,
	Hillf Danton <hillf.zj@...baba-inc.com>,
	Michal Hocko <mhocko@...e.com>,
	Chen Gang <chengang@...ndsoft.com.cn>,
	David Woods <dwoods@...hip.com>,
	Yaowei Bai <baiyaowei@...s.chinamobile.com>,
	sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] sparc64: Fix pagetable freeing for hugepage regions

Hi,

[auto build test ERROR on sparc/master]
[also build test ERROR on v4.7-rc4 next-20160622]
[cannot apply to sparc-next/master]
[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/Nitin-Gupta/sparc64-Trim-page-tables-for-8M-hugepages/20160623-092926
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master
config: i386-defconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/linux/hugetlb.h:420:0,
                    from kernel/fork.c:38:
>> arch/x86/include/asm/hugetlb.h:30:20: error: static declaration of 'hugetlb_free_pgd_range' follows non-static declaration
    static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
                       ^~~~~~~~~~~~~~~~~~~~~~
   In file included from kernel/fork.c:38:0:
   include/linux/hugetlb.h:123:6: note: previous declaration of 'hugetlb_free_pgd_range' was here
    void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
         ^~~~~~~~~~~~~~~~~~~~~~

vim +/hugetlb_free_pgd_range +30 arch/x86/include/asm/hugetlb.h

6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  24  		return -EINVAL;
a5516438 include/asm-x86/hugetlb.h Andi Kleen      2008-07-23  25  	if (addr & ~huge_page_mask(h))
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  26  		return -EINVAL;
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  27  	return 0;
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  28  }
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  29  
42b77728 include/asm-x86/hugetlb.h Jan Beulich     2008-07-23 @30  static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  31  					  unsigned long addr, unsigned long end,
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  32  					  unsigned long floor,
6d779079 include/asm-x86/hugetlb.h Gerald Schaefer 2008-04-28  33  					  unsigned long ceiling)

:::::: The code at line 30 was first introduced by commit
:::::: 42b7772812d15b86543a23b82bd6070eef9a08b1 mm: remove double indirection on tlb parameter to free_pgd_range() & Co

:::::: TO: Jan Beulich <jbeulich@...ell.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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