Linux-ARM-Kernel Archive on lore.kernel.org
 help / color / Atom feed
From: Shakeel Butt <shakeelb@google.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: mark.rutland@arm.com, Michal Hocko <mhocko@suse.com>,
	linux-sh@vger.kernel.org, peterz@infradead.org,
	catalin.marinas@arm.com,
	Dave Hansen <dave.hansen@linux.intel.com>,
	will.deacon@arm.com, christoffer.dall@arm.com,
	Linux MM <linux-mm@kvack.org>,
	kvmarm@lists.cs.columbia.edu, aneesh.kumar@linux.ibm.com,
	linux@armlinux.org.uk, Ingo Molnar <mingo@redhat.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	David Rientjes <rientjes@google.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	marc.zyngier@arm.com, Mike Rapoport <rppt@linux.vnet.ibm.com>,
	"Kirill A. Shutemov" <kirill@shutemov.name>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-arm-kernel@lists.infradead.org,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	ard.biesheuvel@linaro.org, linuxppc-dev@lists.ozlabs.org,
	steve.capper@arm.com, LKML <linux-kernel@vger.kernel.org>,
	james.morse@arm.com, Andrew Morton <akpm@linux-foundation.org>,
	robin.murphy@arm.com
Subject: Re: [PATCH] mm: Introduce GFP_PGTABLE
Date: Sat, 12 Jan 2019 08:50:42 -0800
Message-ID: <CALvZod5XfFujzzMC0n2dZmofjof0juWw45RF4475CAEu9nAv3Q@mail.gmail.com> (raw)
In-Reply-To: <20190112154944.GT6310@bombadil.infradead.org>

On Sat, Jan 12, 2019 at 7:50 AM Matthew Wilcox <willy@infradead.org> wrote:
>
> On Sat, Jan 12, 2019 at 02:49:29PM +0100, Christophe Leroy wrote:
> > As far as I can see,
> >
> > #define GFP_KERNEL_ACCOUNT (GFP_KERNEL | __GFP_ACCOUNT)
> >
> > So what's the difference between:
> >
> > (GFP_KERNEL_ACCOUNT | __GFP_ZERO) & ~__GFP_ACCOUNT
> >
> > and
> >
> > (GFP_KERNEL | __GFP_ZERO) & ~__GFP_ACCOUNT
>
> Nothing.  But there's a huge difference in the other parts of that same
> file where GFP_ACCOUNT is _not_ used.
>
> I think this unification is too small to bother with.  Something I've
> had on my todo list for some time and have not done anything about
> is to actually unify all of the architecture pte/pmd/... allocations.
> There are tricks some architectures use that others would benefit from.

Can you explain a bit more on this? If this is too low priority on
your todo list then maybe me or someone else can pick that up.

Shakeel

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-12 10:26 Anshuman Khandual
2019-01-12 12:12 ` Matthew Wilcox
2019-01-12 12:55   ` Anshuman Khandual
2019-01-12 13:49   ` Christophe Leroy
2019-01-12 15:49     ` Matthew Wilcox
2019-01-12 16:50       ` Shakeel Butt [this message]
2019-01-14  4:28       ` Anshuman Khandual
2019-01-12 16:48 ` Shakeel Butt
2019-01-14  4:14   ` Anshuman Khandual
2019-01-13 17:35 ` Michal Hocko
2019-01-14  4:00   ` Anshuman Khandual
2019-01-14  7:01     ` Michal Hocko
2019-01-15 14:11       ` Anshuman Khandual

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CALvZod5XfFujzzMC0n2dZmofjof0juWw45RF4475CAEu9nAv3Q@mail.gmail.com \
    --to=shakeelb@google.com \
    --cc=akpm@linux-foundation.org \
    --cc=aneesh.kumar@linux.ibm.com \
    --cc=anshuman.khandual@arm.com \
    --cc=ard.biesheuvel@linaro.org \
    --cc=catalin.marinas@arm.com \
    --cc=christoffer.dall@arm.com \
    --cc=christophe.leroy@c-s.fr \
    --cc=dave.hansen@linux.intel.com \
    --cc=james.morse@arm.com \
    --cc=kirill@shutemov.name \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-sh@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=marc.zyngier@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=mhocko@suse.com \
    --cc=mingo@redhat.com \
    --cc=peterz@infradead.org \
    --cc=rientjes@google.com \
    --cc=robin.murphy@arm.com \
    --cc=rppt@linux.vnet.ibm.com \
    --cc=steve.capper@arm.com \
    --cc=tglx@linutronix.de \
    --cc=vbabka@suse.cz \
    --cc=will.deacon@arm.com \
    --cc=willy@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-Kernel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/0 linux-arm-kernel/git/0.git
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/1 linux-arm-kernel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-kernel linux-arm-kernel/ https://lore.kernel.org/linux-arm-kernel \
		linux-arm-kernel@lists.infradead.org infradead-linux-arm-kernel@archiver.kernel.org
	public-inbox-index linux-arm-kernel


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-arm-kernel


AGPL code for this site: git clone https://public-inbox.org/ public-inbox