linux-kernel - Re: [PATCH v2] arm64: use generic free_initrd

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Date:   Wed, 25 Sep 2019 01:18:26 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     kbuild-all@...org, Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Laura Abbott <labbott@...hat.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mike Rapoport <rppt@...ux.ibm.com>
Subject: Re: [PATCH v2] arm64: use generic free_initrd_mem()

Hi Mike,

I love your patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[cannot apply to v5.3 next-20190920]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Mike-Rapoport/arm64-use-generic-free_initrd_mem/20190924-220328
base:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: powerpc-allmodconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 7.4.0
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
        GCC_VERSION=7.4.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   init/initramfs.c: In function 'free_initrd_mem':
>> init/initramfs.c:536:2: error: implicit declaration of function 'memblock_free'; did you mean 'ptlock_free'? [-Werror=implicit-function-declaration]
     memblock_free(__virt_to_phys(start), end - start);
     ^~~~~~~~~~~~~
     ptlock_free
>> init/initramfs.c:536:16: error: implicit declaration of function '__virt_to_phys'; did you mean 'virt_to_phys'? [-Werror=implicit-function-declaration]
     memblock_free(__virt_to_phys(start), end - start);
                   ^~~~~~~~~~~~~~
                   virt_to_phys
   cc1: some warnings being treated as errors

vim +536 init/initramfs.c

   529	
   530	void __weak free_initrd_mem(unsigned long start, unsigned long end)
   531	{
   532		free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
   533				"initrd");
   534	
   535	#ifdef CONFIG_ARCH_KEEP_MEMBLOCK
 > 536		memblock_free(__virt_to_phys(start), end - start);
   537	#endif
   538	}
   539	

---
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