linux-kernel - [PATCH] powerpc: add empty update_numa_cpu_lookup_table for !CONFIG

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Date:   Wed, 14 Feb 2018 12:17:47 +0000
From:   Corentin Labbe <clabbe@...libre.com>
To:     benh@...nel.crashing.org, mpe@...erman.id.au, paulus@...ba.org,
        nfont@...ux.vnet.ibm.com, tyreld@...ux.vnet.ibm.com
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH] powerpc: add empty update_numa_cpu_lookup_table for !CONFIG_NUMA

When CONFIG_NUMA is not set, build fail with:
arch/powerpc/platforms/pseries/hotplug-cpu.c:335:4: error: déclaration implicite de la fonction « update_numa_cpu_lookup_table » [-Werror=implicit-function-declaration]

So we have to add update_numa_cpu_lookup_table as an empty function when CONFIG_NUMA is not set.

Fixes: 1d9a090783be ("powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove")
Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
 arch/powerpc/include/asm/topology.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
index 593248110902..9f421641a35c 100644
--- a/arch/powerpc/include/asm/topology.h
+++ b/arch/powerpc/include/asm/topology.h
@@ -81,6 +81,9 @@ static inline int numa_update_cpu_topology(bool cpus_locked)
 {
 	return 0;
 }
+
+static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
+
 #endif /* CONFIG_NUMA */
 
 #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
-- 
2.13.6