mm: Limit warning message in vmemmap_verify() to once

For a system only have limited mirrored memory or some numa node without
mirrored memory, the per node vmemmap page_structs prefer to allocate
memory from mirrored region, which will lead to vmemmap_verify() in
vmemmap_populate_basepages() report lots of warning message.

This patch change the frequency of "potential offnode page_structs" warning
messages to only once to avoid a very long print during bootup.

Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20220614092156.1972846-4-mawupeng1@huawei.com
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index f4fa61d..f34c688 100644 (file)
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -528,7 +528,7 @@ void __meminit vmemmap_verify(pte_t *pte, int node,
        int actual_node = early_pfn_to_nid(pfn);
 
        if (node_distance(actual_node, node) > LOCAL_DISTANCE)
-               pr_warn("[%lx-%lx] potential offnode page_structs\n",
+               pr_warn_once("[%lx-%lx] potential offnode page_structs\n",
                        start, end - 1);
 }