linux-kernel - [PATCH 4/6] powerpc: numa: Restrict fake NUMA enulation to CONFIG

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Message-Id: <20180220161424.5421-5-j.neuschaefer@gmx.net>
Date:   Tue, 20 Feb 2018 17:14:22 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>, linux-mm@...ck.org,
        Joel Stanley <joel@....id.au>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
        Michael Bringmann <mwb@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>,
        Kees Cook <keescook@...omium.org>
Subject: [PATCH 4/6] powerpc: numa: Restrict fake NUMA enulation to CONFIG_NUMA systems

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 arch/powerpc/mm/numa.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index df03a65b658f..dfe279529463 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -738,7 +738,8 @@ static void __init setup_nonnuma(void)
 		start_pfn = memblock_region_memory_base_pfn(reg);
 		end_pfn = memblock_region_memory_end_pfn(reg);
 
-		fake_numa_create_new_node(end_pfn, &nid);
+		if (IS_ENABLED(CONFIG_NUMA))
+			fake_numa_create_new_node(end_pfn, &nid);
 		memblock_set_node(PFN_PHYS(start_pfn),
 				  PFN_PHYS(end_pfn - start_pfn),
 				  &memblock.memory, nid);
-- 
2.16.1