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 ce32925ef1c72e401151ea76696b229c8498fda7..df72da87b3e6d6315cd777a40dddf7f7abd7c154 100644 (file)
--- 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