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From: Andrew Morton <akpm@linux-foundation.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	Michal Hocko <mhocko@suse.com>, Kees Cook <keescook@chromium.org>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	keith.busch@intel.com
Subject: Re: [PATCH v10 1/3] mm: Shuffle initial free memory to improve memory-side-cache utilization
Date: Tue, 5 Feb 2019 14:04:15 -0800	[thread overview]
Message-ID: <20190205140415.544ae2876ee44e6edb8ca743@linux-foundation.org> (raw)
In-Reply-To: <154899811738.3165233.12325692939590944259.stgit@dwillia2-desk3.amr.corp.intel.com>

On Thu, 31 Jan 2019 21:15:17 -0800 Dan Williams <dan.j.williams@intel.com> wrote:

> +config SHUFFLE_PAGE_ALLOCATOR
> +	bool "Page allocator randomization"
> +	default SLAB_FREELIST_RANDOM && ACPI_NUMA
> +	help

SLAB_FREELIST_RANDOM is default n, so this patchset won't get much
runtime testing.

How about you cook up a (-mm only) patch which makes the kernel default
to SLAB_FREELIST_RANDOM=y, SHUFFLE_PAGE_ALLOCATOR=y (or whatever) to
ensure we get a decent amount of runtime testing?  Then I can hold that
in -mm (and -next) until we get bored of it?


  reply	other threads:[~2019-02-05 22:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-01  5:15 [PATCH v10 0/3] mm: Randomize free memory Dan Williams
2019-02-01  5:15 ` [PATCH v10 1/3] mm: Shuffle initial free memory to improve memory-side-cache utilization Dan Williams
2019-02-05 22:04   ` Andrew Morton [this message]
2019-02-05 23:11     ` Kees Cook
2019-02-05 23:29       ` Matthew Wilcox
2019-05-31  7:33   ` Vlastimil Babka
2019-05-31 14:59     ` Dan Williams
2019-02-01  5:15 ` [PATCH v10 2/3] mm: Move buddy list manipulations into helpers Dan Williams
2019-02-19 15:24   ` Vlastimil Babka
2019-02-19 17:21     ` Dan Williams
2019-02-01  5:15 ` [PATCH v10 3/3] mm: Maintain randomization of page free lists Dan Williams
2019-02-01  9:58   ` Michal Hocko

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