From: Kees Cook <keescook@chromium.org>
To: Alexander Potapenko <glider@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Kernel Hardening <kernel-hardening@lists.openwall.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Kostya Serebryany <kcc@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Sandeep Patil <sspatil@android.com>,
Laura Abbott <labbott@redhat.com>,
Randy Dunlap <rdunlap@infradead.org>,
Jann Horn <jannh@google.com>, Mark Rutland <mark.rutland@arm.com>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-security-module <linux-security-module@vger.kernel.org>
Subject: Re: [PATCH 5/4] mm: Introduce SLAB_NO_FREE_INIT and mark excluded caches
Date: Fri, 17 May 2019 08:59:39 -0700 [thread overview]
Message-ID: <201905170858.CE4109E77@keescook> (raw)
In-Reply-To: <CAG_fn=W41zDac9DN9qVB_EwJG89f2cNBQYNyove4oO3dwe6d5Q@mail.gmail.com>
On Fri, May 17, 2019 at 10:34:26AM +0200, Alexander Potapenko wrote:
> On Fri, May 17, 2019 at 2:50 AM Kees Cook <keescook@chromium.org> wrote:
> >
> > In order to improve the init_on_free performance, some frequently
> > freed caches with less sensitive contents can be excluded from the
> > init_on_free behavior.
> Did you see any notable performance improvement with this patch?
> A similar one gave me only 1-2% on the parallel Linux build.
Yup, that's in the other thread. I saw similar. But 1-2% on a 5% hit is
a lot. ;)
--
Kees Cook
next prev parent reply other threads:[~2019-05-17 15:59 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190514143537.10435-1-glider@google.com>
2019-05-14 14:35 ` [PATCH v2 1/4] mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options Alexander Potapenko
2019-05-16 16:19 ` Kees Cook
2019-05-16 16:42 ` Alexander Potapenko
2019-05-16 17:03 ` Kees Cook
2019-05-17 1:26 ` Kees Cook
2019-05-17 14:38 ` Alexander Potapenko
2019-05-17 14:04 ` Michal Hocko
2019-05-17 14:11 ` Alexander Potapenko
2019-05-17 14:20 ` Michal Hocko
2019-05-17 16:36 ` Kees Cook
2019-05-17 17:11 ` Michal Hocko
2019-05-14 14:35 ` [PATCH v2 2/4] lib: introduce test_meminit module Alexander Potapenko
2019-05-16 1:02 ` Kees Cook
2019-05-17 15:51 ` Alexander Potapenko
2019-05-17 16:37 ` Kees Cook
2019-05-14 14:35 ` [PATCH v2 3/4] gfp: mm: introduce __GFP_NO_AUTOINIT Alexander Potapenko
2019-05-17 12:59 ` Michal Hocko
2019-05-17 13:18 ` Alexander Potapenko
2019-05-17 13:25 ` Michal Hocko
2019-05-17 13:37 ` Alexander Potapenko
2019-05-17 14:01 ` Michal Hocko
2019-05-17 16:27 ` Kees Cook
2019-05-17 17:11 ` Michal Hocko
2019-05-21 14:18 ` Alexander Potapenko
2019-05-21 14:25 ` Michal Hocko
2019-05-14 14:35 ` [PATCH v2 4/4] net: apply __GFP_NO_AUTOINIT to AF_UNIX sk_buff allocations Alexander Potapenko
2019-05-16 16:53 ` Kees Cook
2019-05-17 0:26 ` Kees Cook
2019-05-17 8:49 ` Alexander Potapenko
2019-05-17 13:50 ` Alexander Potapenko
2019-05-17 16:13 ` Kees Cook
2019-05-17 0:50 ` [PATCH 5/4] mm: Introduce SLAB_NO_FREE_INIT and mark excluded caches Kees Cook
2019-05-17 8:34 ` Alexander Potapenko
2019-05-17 15:59 ` Kees Cook [this message]
2019-05-20 6:10 ` Mathias Krause
2019-05-20 16:12 ` Kees Cook
Reply instructions:
You may reply publicly 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=201905170858.CE4109E77@keescook \
--to=keescook@chromium.org \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=dvyukov@google.com \
--cc=glider@google.com \
--cc=jannh@google.com \
--cc=jmorris@namei.org \
--cc=kcc@google.com \
--cc=kernel-hardening@lists.openwall.com \
--cc=labbott@redhat.com \
--cc=linux-mm@kvack.org \
--cc=linux-security-module@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=ndesaulniers@google.com \
--cc=rdunlap@infradead.org \
--cc=serge@hallyn.com \
--cc=sspatil@android.com \
--cc=yamada.masahiro@socionext.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox