linux-kernel - Re: [v6 04/15] mm: discard memblock data later

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Message-ID: <aac7b5f1-5c5e-e716-af49-bc150449ddbc@oracle.com>
Date:   Mon, 14 Aug 2017 09:39:17 -0400
From:   Pasha Tatashin <pasha.tatashin@...cle.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        x86@...nel.org, kasan-dev@...glegroups.com, borntraeger@...ibm.com,
        heiko.carstens@...ibm.com, davem@...emloft.net,
        willy@...radead.org, ard.biesheuvel@...aro.org,
        will.deacon@....com, catalin.marinas@....com, sam@...nborg.org,
        Mel Gorman <mgorman@...e.de>
Subject: Re: [v6 04/15] mm: discard memblock data later

>> #ifdef CONFIG_MEMBLOCK in page_alloc, or define memblock_discard() stubs in
>> nobootmem headfile.
> 
> This is the standard way to do this. And it is usually preferred to
> proliferate ifdefs in the code.

Hi Michal,

As you suggested, I sent-out this patch separately. If you feel 
strongly, that this should be updated to have stubs for platforms that 
do not implement memblock, please send a reply to that e-mail, so those 
who do not follow this tread will see it. Otherwise, I can leave it as 
is, page_alloc file already has a number memblock related ifdefs all of 
which can be cleaned out once every platform implements it (is it even 
achievable?)

Thank you,
Pasha