Messages in this thread Patch in this message | | | From | Geert Uytterhoeven <> | Subject | [PATCH 1/2] mm: Move node_reclaim_distance to fix NUMA without SMP | Date | Thu, 16 Sep 2021 10:42:42 +0200 |
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If CONFIG_NUMA=y, but CONFIG_SMP=n (e.g. sh/migor_defconfig):
sh4-linux-gnu-ld: mm/page_alloc.o: in function `get_page_from_freelist': page_alloc.c:(.text+0x2c24): undefined reference to `node_reclaim_distance'
Fix this by moving the declaration of node_reclaim_distance from an SMP-only to a generic file.
Fixes: a55c7454a8c887b2 ("sched/topology: Improve load balancing on AMD EPYC systems") Suggested-by: Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- kernel/sched/topology.c | 1 - mm/page_alloc.c | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 4e8698e62f0754a3..738ee7fa79724c7d 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1481,7 +1481,6 @@ static int sched_domains_curr_level; int sched_max_numa_distance; static int *sched_domains_numa_distance; static struct cpumask ***sched_domains_numa_masks; -int __read_mostly node_reclaim_distance = RECLAIM_DISTANCE; static unsigned long __read_mostly *sched_numa_onlined_nodes; #endif diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b37435c274cf1cb1..8b2d7a9bae6c1754 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3966,6 +3966,8 @@ bool zone_watermark_ok_safe(struct zone *z, unsigned int order, } #ifdef CONFIG_NUMA +int __read_mostly node_reclaim_distance = RECLAIM_DISTANCE; + static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone) { return node_distance(zone_to_nid(local_zone), zone_to_nid(zone)) <= -- 2.25.1
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