linux-kernel - Re: mm/hugetlb.c:5580:3: error: implicit declaration of function 'for_each_mem_pfn_range'; did you mean 'for_each_mem

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Message-ID: <20200406172525.GA338360@carbon.DHCP.thefacebook.com>
Date:   Mon, 6 Apr 2020 10:25:25 -0700
From:   Roman Gushchin <guro@...com>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        open list <linux-kernel@...r.kernel.org>,
        <andreas.schaufler@....de>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Michal Hocko <mhocko@...nel.org>,
        Rik van Riel <riel@...riel.com>, <js1304@...il.com>,
        <lkft-triage@...ts.linaro.org>
Subject: Re: mm/hugetlb.c:5580:3: error: implicit declaration of function
 'for_each_mem_pfn_range'; did you mean 'for_each_mem_range'

On Mon, Apr 06, 2020 at 07:48:54PM +0530, Naresh Kamboju wrote:
> While building Linux-next master for arm beagle board x15 the following
> build error was noticed.

Hello Naresh!

There was a number of cleanups and fixes to the original hugetlb_cma
patch, and it looks like some parts were lost.
I'm going to gather all changes and resubmit a new version later today.
Sorry for the inconvenience.

Thanks!

> 
> mm/hugetlb.c: In function 'hugetlb_cma_reserve':
> mm/hugetlb.c:5580:3: error: implicit declaration of function
> 'for_each_mem_pfn_range'; did you mean 'for_each_mem_range'?
> [-Werror=implicit-function-declaration]
>    for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
>    ^~~~~~~~~~~~~~~~~~~~~~
>    for_each_mem_range
> mm/hugetlb.c:5580:62: error: expected ';' before '{' token
>    for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) {
>                                                               ^
> Few more details about build test,
> 
> CONFIG_HUGETLBFS=y
> CONFIG_HUGETLB_PAGE=y
> CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
> CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
> 
> # CONFIG_TRANSPARENT_HUGEPAGE is not set
> # CONFIG_CMA is not set
> 
> Kernel config link,
> https://urldefense.proofpoint.com/v2/url?u=http-3A__snapshots.linaro.org_openembedded_lkft_lkft_sumo_intel-2Dcore2-2D32_lkft_linux-2Dmainline_2591_config&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=jJYgtDM7QT-W-Fz_d29HYQ&m=UExtNmMVvgxP1D5SQnPuvrZmT1KYfONSBf9zENyfrs4&s=O436GE4UqAvqVk0stawAOhOUm1bNCFpZzxiVeNSs-ck&e= 
> 
> Build log,
> https://urldefense.proofpoint.com/v2/url?u=https-3A__ci.linaro.org_view_lkft_job_openembedded-2Dlkft-2Dlinux-2Dnext_DISTRO-3Dlkft-2CMACHINE-3Dam57xx-2Devm-2Clabel-3Ddocker-2Dlkft_743_consoleText&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=jJYgtDM7QT-W-Fz_d29HYQ&m=UExtNmMVvgxP1D5SQnPuvrZmT1KYfONSBf9zENyfrs4&s=nuGZRu4xyY-99ohWh1uNDTo6NeV62n7kSsyoefxEGvI&e= 
> 
> --
> Linaro LKFT
> https://urldefense.proofpoint.com/v2/url?u=https-3A__lkft.linaro.org&d=DwIBaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=jJYgtDM7QT-W-Fz_d29HYQ&m=UExtNmMVvgxP1D5SQnPuvrZmT1KYfONSBf9zENyfrs4&s=uYemxk7TXD2Qie6H7zY9UjuE7zlN5ILjbD_1UD3jo4A&e=