From: Allen Pais <allen.pais@oracle.com>
Date: Mon, 15 May 2017 11:02:47 +0000 (+0530)
Subject: sparc64: increase FORCE_MAX_ZONEORDER to 16
X-Git-Tag: v4.1.12-98.0.20170517_2143~24
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ce505b1549bb0c84abe927a8e51fcbaebee645f4;p=users%2Fjedix%2Flinux-maple.git

sparc64: increase FORCE_MAX_ZONEORDER to 16

Orabug: 25448108

This change enables large tsb sizes of up to 256MB. The performance
improvement is substantial for those programs with an enormous tsb rss.

Signed-off-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
---

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ce32925ef1c7..df72da87b3e6 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -368,7 +368,7 @@ config ARCH_SPARSEMEM_DEFAULT
 config FORCE_MAX_ZONEORDER
 	int "Maximum zone order"
 	default "13" if KEXEC
-	default "11"
+	default "16"
 	help
 	  The kernel memory allocator divides physically contiguous memory
 	  blocks into "zones", where each zone is a power of two number of