Re: [PATCH] mm: cma: improve utilization of cma pages

From: kbuild test robot <lkp@intel.com>
To: Chen Feng <puck.chen@hisilicon.com>
Cc: kbuild-all@01.org, puck.chen@hisilicon.com,
	akpm@linux-foundation.org, mhocko@suse.com, vbabka@suse.cz,
	hannes@cmpxchg.org, kirill.shutemov@linux.intel.com,
	mgorman@techsingularity.net, iamjoonsoo.kim@lge.com,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	oliver.fu@hisilicon.com, suzhuangluan@hisilicon.com,
	qijiwen@hisilicon.com, xuyiping@hisilicon.com,
	puck.chen@foxmail.com
Subject: Re: [PATCH] mm: cma: improve utilization of cma pages
Date: Thu, 3 Nov 2016 17:54:53 +0800	[thread overview]
Message-ID: <201611031703.8WVh4Fcm%fengguang.wu@intel.com> (raw)
In-Reply-To: <1478163499-110185-1-git-send-email-puck.chen@hisilicon.com>

[-- Attachment #1: Type: text/plain, Size: 1971 bytes --]

Hi Chen,

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.9-rc3 next-20161028]
[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/Chen-Feng/mm-cma-improve-utilization-of-cma-pages/20161103-173624
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: x86_64-randconfig-x011-201644 (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=x86_64 

All errors (new ones prefixed by >>):

   In file included from include/linux/slab.h:14:0,
                    from include/linux/crypto.h:24,
                    from arch/x86/kernel/asm-offsets.c:8:
   include/linux/gfp.h: In function 'gfpflags_to_migratetype':
>> include/linux/gfp.h:274:10: error: 'MIGRATE_CMA' undeclared (first use in this function)
      return MIGRATE_CMA;
             ^~~~~~~~~~~
   include/linux/gfp.h:274:10: note: each undeclared identifier is reported only once for each function it appears in
   make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/MIGRATE_CMA +274 include/linux/gfp.h

   268	{
   269		VM_WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
   270		BUILD_BUG_ON((1UL << GFP_MOVABLE_SHIFT) != ___GFP_MOVABLE);
   271		BUILD_BUG_ON((___GFP_MOVABLE >> GFP_MOVABLE_SHIFT) != MIGRATE_MOVABLE);
   272	
   273		if (IS_ENABLED(CONFIG_CMA) && gfp_flags & __GFP_MOVABLE)
 > 274			return MIGRATE_CMA;
   275	
   276		if (unlikely(page_group_by_mobility_disabled))
   277			return MIGRATE_UNMOVABLE;

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 25105 bytes --]