linux-kernel - Re: [PATCH v3] sparc64: Reduce TLB flushes during hugepte changes

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Message-ID: <201603300647.PqTf5ciq%fengguang.wu@intel.com>
Date:	Wed, 30 Mar 2016 06:38:38 +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>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Khalid Aziz <khalid.aziz@...cle.com>,
	Minchan Kim <minchan@...nel.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Zhang Zhen <zhenzhang.zhang@...wei.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Ingo Molnar <mingo@...nel.org>,
	Chris Hyser <chris.hyser@...cle.com>,
	David Hildenbrand <dahi@...ux.vnet.ibm.com>,
	Toshi Kani <toshi.kani@....com>,
	Tony Luck <tony.luck@...el.com>, sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] sparc64: Reduce TLB flushes during hugepte changes

Hi Nitin,

[auto build test ERROR on sparc/master]
[also build test ERROR on v4.6-rc1 next-20160329]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Nitin-Gupta/sparc64-Reduce-TLB-flushes-during-hugepte-changes/20160330-051327
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master
config: sparc64-allnoconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   arch/sparc/mm/tlb.c: In function 'tlb_batch_add':
>> arch/sparc/mm/tlb.c:115:2: error: implicit declaration of function 'is_hugetlb_pte' [-Werror=implicit-function-declaration]
     bool huge = is_hugetlb_pte(orig);
     ^
   cc1: all warnings being treated as errors

vim +/is_hugetlb_pte +115 arch/sparc/mm/tlb.c

   109		put_cpu_var(tlb_batch);
   110	}
   111	
   112	void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
   113			   pte_t *ptep, pte_t orig, int fullmm)
   114	{
 > 115		bool huge = is_hugetlb_pte(orig);
   116	
   117		if (tlb_type != hypervisor &&
   118		    pte_dirty(orig)) {

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Download attachment ".config.gz" of type "application/octet-stream" (4864 bytes)