[PATCH 6/6] x86/numa: build node fallback info after setting up node to cpumask map

[Pingfan Liu]

After the previous patches, on x86, it is safe to call
memblock_build_node_order() after init_cpu_to_node(), which has set up node
to cpumask map. So calling memblock_build_node_order() to feed memblock with
numa node fall back info.

Signed-off-by: Pingfan Liu <kernelfans@xxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: Borislav Petkov <bp@xxxxxxxxx>
CC: "H. Peter Anvin" <hpa@xxxxxxxxx>
CC: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CC: Vlastimil Babka <vbabka@xxxxxxx>
CC: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Mel Gorman <mgorman@xxxxxxx>
CC: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
CC: Andy Lutomirski <luto@xxxxxxxxxx>
CC: Andi Kleen <ak@xxxxxxxxxxxxxxx>
CC: Petr Tesarik <ptesarik@xxxxxxx>
CC: Michal Hocko <mhocko@xxxxxxxx>
CC: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
CC: Jonathan Corbet <corbet@xxxxxxx>
CC: Nicholas Piggin <npiggin@xxxxxxxxx>
CC: Daniel Vacek <neelx@xxxxxxxxxx>
CC: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/x86/kernel/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3d872a5..3ec1a6e 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1245,6 +1245,8 @@ void __init setup_arch(char **cmdline_p)
 	prefill_possible_map();
 
 	init_cpu_to_node();
+	/* node to cpumask map is ready */
+	memblock_build_node_order();
 
 	io_apic_init_mappings();
 
-- 
2.7.4