From: Mel Gorman <mgorman@techsingularity.net>
To: Linux-Stable <stable@vger.kernel.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Mel Gorman <mgorman@techsingularity.net>
Subject: [PATCH 4.3-stable 0/5] Disable automatic numa balancing on UMA
Date: Thu, 7 Jan 2016 17:57:31 +0000 [thread overview]
Message-ID: <1452189456-8486-1-git-send-email-mgorman@techsingularity.net> (raw)
Automatic NUMA balancing only makes sense on NUMA machines but was enabled
in 4.3 on UMA by commit 2a1ed24 ("sched/numa: Prefer NUMA hotness over
cache hotness") and is still enabled in 4.3.3 despite the fixes being in
mainline. With this series applied, UMA has zero automatic NUMA-related
page table updates as expected.
kernel/sched/core.c | 18 ++++++------------
kernel/sched/fair.c | 8 ++++----
kernel/sched/features.h | 16 ----------------
kernel/sched/sched.h | 12 +-----------
4 files changed, 11 insertions(+), 43 deletions(-)
--
2.6.4
next reply other threads:[~2016-01-07 17:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-07 17:57 Mel Gorman [this message]
2016-01-07 17:57 ` [PATCH 1/5] sched/numa: Rename numabalancing_enabled to sched_numa_balancing Mel Gorman
2016-01-07 17:57 ` [PATCH 2/5] sched/numa: Disable sched_numa_balancing on UMA systems Mel Gorman
2016-01-07 17:57 ` [PATCH 3/5] sched/numa: Remove the NUMA sched_feature Mel Gorman
2016-01-07 17:57 ` [PATCH 4/5] sched/numa: Convert sched_numa_balancing to a static_branch Mel Gorman
2016-01-07 17:57 ` [PATCH 5/5] sched/numa: Fix task_tick_fair() from disabling numa_balancing Mel Gorman
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