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: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-14 14:35 [PATCH v2 0/4] RFC: add init_on_alloc/init_on_free boot options Alexander Potapenko
2019-05-14 14:35 ` [PATCH v2 1/4] mm: security: introduce init_on_alloc=1 and init_on_free=1 " 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
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