Re: [PATCH v5 2/5] arm: arm64: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn()

From: kbuild test robot <lkp@intel.com>
To: Jia He <hejianet@gmail.com>
Cc: kbuild-all@01.org, Russell King <linux@armlinux.org.uk>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Michal Hocko <mhocko@suse.com>,
	Wei Yang <richard.weiyang@gmail.com>,
	Kees Cook <keescook@chromium.org>,
	Laura Abbott <labbott@redhat.com>,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	Philip Derrin <philip@cog.systems>,
	Grygorii Strashko <grygorii.strashko@linaro.org>,
	AKASHI Takahiro <takahiro.akashi@linaro.org>,
	James Morse <james.morse@arm.com>,
	Steve Capper <steve.capper@arm.com>,
	Pavel Tatashin <pasha.tatashin@oracle.com>,
	Gioh Kim <gi-oh.kim@profitbricks.com>,
	Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@suse.de>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Kemi Wang <kemi.wang@intel.com>, Petr Tesarik <ptesarik@suse.com>,
	YASUAKI ISHIMATSU <yasu.isimatu@gmail.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Nikolay Borisov <nborisov@suse.com>,
	Daniel Jordan <daniel.m.jordan@oracle.com>,
	Daniel Vacek <neelx@redhat.com>,
	Eugeniu Rosca <erosca@de.adit-jv.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Jia He <hejianet@gmail.com>, Jia He <jia.he@hxt-semitech.com>
Subject: Re: [PATCH v5 2/5] arm: arm64: page_alloc: reduce unnecessary binary search in memblock_next_valid_pfn()
Date: Mon, 2 Apr 2018 23:07:19 +0800	[thread overview]
Message-ID: <201804022139.L0oMwzjy%fengguang.wu@intel.com> (raw)
In-Reply-To: <1522636236-12625-3-git-send-email-hejianet@gmail.com>

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Hi Jia,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.16 next-20180329]
[cannot apply to arm64/for-next/core]
[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/Jia-He/optimize-memblock_next_valid_pfn-and-early_pfn_valid-on-arm-and-arm64/20180402-131223
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All warnings (new ones prefixed by >>):

>> WARNING: vmlinux.o(.text+0x39a80): Section mismatch in reference from the function memblock_next_valid_pfn() to the variable .meminit.data:$d
   The function memblock_next_valid_pfn() references
   the variable __meminitdata $d.
   This is often because memblock_next_valid_pfn lacks a __meminitdata
   annotation or the annotation of $d is wrong.

---
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