From: Christoph Lameter <cl@linux.com>
To: Laura Abbott <labbott@fedoraproject.org>
Cc: Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <js1304@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-hardening@lists.openwall.com,
Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH 3/3] slub: Add option to skip consistency checks
Date: Tue, 26 Jan 2016 09:00:20 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.20.1601260858590.27338@east.gentwo.org> (raw)
In-Reply-To: <1453770913-32287-4-git-send-email-labbott@fedoraproject.org>
On Mon, 25 Jan 2016, Laura Abbott wrote:
> SLUB debugging by default does checks to ensure consistency.
> These checks, while useful, are expensive for allocation speed.
> Features such as poisoning and tracing can stand alone without
> any checks. Add a slab flag to skip these checks.
I would suggest to rename the SLAB_DEBUG_FREE to SLAB_CONSISTENCY_CHECKS
instead. I think the flag is already used that way in a couple of places.
Flags generally enable stuff. Disabling what is enabled by others is
something that we want to avoid for simplicities sake.
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next prev parent reply other threads:[~2016-01-26 15:00 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-26 1:15 [RFC][PATCH 0/3] Speed up SLUB poisoning + disable checks Laura Abbott
2016-01-26 1:15 ` [RFC][PATCH 1/3] slub: Drop lock at the end of free_debug_processing Laura Abbott
2016-01-26 16:19 ` Christoph Lameter
2016-01-26 1:15 ` [RFC][PATCH 2/3] slub: Don't limit debugging to slow paths Laura Abbott
2016-01-26 8:48 ` Paul Bolle
2016-01-26 1:15 ` [PATCH 3/3] slub: Add option to skip consistency checks Laura Abbott
2016-01-26 15:00 ` Christoph Lameter [this message]
2016-01-26 7:03 ` [RFC][PATCH 0/3] Speed up SLUB poisoning + disable checks Joonsoo Kim
2016-01-26 15:01 ` Christoph Lameter
2016-01-26 15:21 ` Joonsoo Kim
2016-02-03 18:46 ` Laura Abbott
2016-02-03 21:06 ` Kees Cook
2016-02-03 21:35 ` Laura Abbott
2016-02-03 23:02 ` Christoph Lameter
2016-02-04 0:46 ` Laura Abbott
2016-02-04 3:23 ` Christoph Lameter
2016-01-26 14:57 ` Christoph Lameter
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