linux-kernel - [PATCH 4.14 061/143] powerpc/pseries: Add empty update_numa_cpu_lookup

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Message-Id: <20181102182901.995868005@linuxfoundation.org>
Date:   Fri,  2 Nov 2018 19:34:06 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Corentin Labbe <clabbe@...libre.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 061/143] powerpc/pseries: Add empty update_numa_cpu_lookup_table() for NUMA=n

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit c1e150ceb61e4a585bad156da15c33bfe89f5858 ]

When CONFIG_NUMA is not set, the build fails with:

  arch/powerpc/platforms/pseries/hotplug-cpu.c:335:4:
  error: déclaration implicite de la fonction « update_numa_cpu_lookup_table »

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>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 d5f2ee882f74..66c72b356ac0 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)
-- 
2.17.1