Messages in this thread Patch in this message | | | From | Qian Cai <> | Subject | [PATCH] s390: set NODES_SHIFT=0 when NUMA=n | Date | Tue, 9 Jun 2020 21:45:01 -0400 |
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When NUMA=n and nr_node_ids=2, in apply_wqattrs_prepare(), it has,
for_each_node(node) { if (wq_calc_node_cpumask(...
where it will trigger a booting warning,
WARNING: workqueue cpumask: online intersect > possible intersect
because it found 2 nodes and wq_numa_possible_cpumask[1] is an empty cpumask. NUMA=y has no such problem because node_possible_map will be initialized properly containing only node 0. Fix it by setting NODES_SHIFT=0 when NUMA=n.
Fixes: 701dc81e7412 ("s390/mm: remove fake numa support") Signed-off-by: Qian Cai <cai@lca.pw> --- arch/s390/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f854faff38c3..59625356d18a 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -462,7 +462,8 @@ config NUMA config NODES_SHIFT int - default "1" + default "1" if NUMA + default "0" config SCHED_SMT def_bool n -- 2.21.0 (Apple Git-122.2)
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