linux-kernel - [PATCH 22/52] sched, numa, mm: Add credits for NUMA placement

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Date:	Sun,  2 Dec 2012 19:43:14 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Turner <pjt@...gle.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Christoph Lameter <cl@...ux.com>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>
Subject: [PATCH 22/52] sched, numa, mm: Add credits for NUMA placement

From: Rik van Riel <riel@...hat.com>

The NUMA placement code has been rewritten several times, but
the basic ideas took a lot of work to develop. The people who
put in the work deserve credit for it. Thanks Andrea & Peter :)

[ The Documentation/scheduler/numa-problem.txt file should
  probably be rewritten once we figure out the final details of
  what the NUMA code needs to do, and why. ]

Signed-off-by: Rik van Riel <riel@...hat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Andrea Arcangeli <aarcange@...hat.com>
Cc: Rik van Riel <riel@...hat.com>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
----
This is against tip.git numa/core
---
 CREDITS             | 1 +
 kernel/sched/fair.c | 3 +++
 mm/memory.c         | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/CREDITS b/CREDITS
index 2346b09..17899e2 100644
--- a/CREDITS
+++ b/CREDITS
@@ -125,6 +125,7 @@ D: Author of pscan that helps to fix lp/parport bugs
 D: Author of lil (Linux Interrupt Latency benchmark)
 D: Fixed the shm swap deallocation at swapoff time (try_to_unuse message)
 D: VM hacker
+D: NUMA task placement
 D: Various other kernel hacks
 S: Imola 40026
 S: Italy
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 511fbb8..8af0208 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -18,6 +18,9 @@
  *
  *  Adaptive scheduling granularity, math enhancements by Peter Zijlstra
  *  Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra <pzijlstr@...hat.com>
+ *
+ *  NUMA placement, statistics and algorithm by Andrea Arcangeli,
+ *  CFS balancing changes by Peter Zijlstra. Copyright (C) 2012 Red Hat, Inc.
  */
 
 #include <linux/latencytop.h>
diff --git a/mm/memory.c b/mm/memory.c
index 0cfd26a..1e043d4 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -36,6 +36,8 @@
  *		(Gerhard.Wichert@....siemens.de)
  *
  * Aug/Sep 2004 Changed to four level page tables (Andi Kleen)
+ *
+ * 2012 - NUMA placement page faults (Andrea Arcangeli, Peter Zijlstra)
  */
 
 #include <linux/kernel_stat.h>
-- 
1.7.11.7

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