linux-kernel - [RFC PATCH 0/2] Automatic NUMA balancing and PROT

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Date:	Thu,  5 Mar 2015 23:54:50 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Dave Chinner <david@...morbit.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>, xfs@....sgi.com,
	linuxppc-dev@...ts.ozlabs.org, Mel Gorman <mgorman@...e.de>
Subject: [RFC PATCH 0/2] Automatic NUMA balancing and PROT_NONE handling followup

Dave Chinner reported a problem due to excessive NUMA balancing activity and
bisected it. These are two patches that address two major issues with that
series. The first patch is almost certainly unrelated to what he saw due
to fact his vmstats showed no huge page activity but the fix is important.
The second patch restores performance of one benchmark to similar levels
to 3.19-vanilla but it still has to be tested on his workload. While I
have a test configuration for his workload, I don't have either the KVM
setup or suitable storage to test against. It also needs to be reviewed
and tested on ppc64.

 arch/powerpc/include/asm/pgtable-ppc64.h | 16 ++++++++++++++++
 arch/x86/include/asm/pgtable.h           | 14 ++++++++++++++
 include/asm-generic/pgtable.h            | 19 +++++++++++++++++++
 mm/huge_memory.c                         | 23 ++++++++++++++++++-----
 mm/mprotect.c                            |  5 +++++
 5 files changed, 72 insertions(+), 5 deletions(-)

-- 
2.1.2

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