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List:       linux-mm
Subject:    [PATCH 2/2] topology: Guard node_reclaim_distance with CONFIFG_NUMA
From:       Palmer Dabbelt <palmer () dabbelt ! com>
Date:       2021-02-26 20:17:21
Message-ID: 20210226201721.510177-2-palmer () dabbelt ! com
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From: Palmer Dabbelt <palmerdabbelt@google.com>

This is only defined (and useful) for CONFIG_NUMA, but isn't
conditionally declared.  This makes users a bit more of a headache to
track down.

Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
---
 include/linux/topology.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/topology.h b/include/linux/topology.h
index 7634cd737061..15f02281bdf0 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -73,7 +73,9 @@ int arch_update_cpu_topology(void);
  * *improves* if allowed to reclaim memory and load balance tasks
  * between NUMA nodes 2-hops apart.
  */
+#ifdef CONFIG_NUMA
 extern int __read_mostly node_reclaim_distance;
+#endif
 
 #ifndef PENALTY_FOR_NODE_WITH_CPUS
 #define PENALTY_FOR_NODE_WITH_CPUS	(1)
-- 
2.30.1.766.gb4fecdf3b7-goog


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