On 08/26/2020 09:01 PM, Matthew Wilcox wrote:
On Wed, Aug 26, 2020 at 08:53:27PM +0800, Jinyang He wrote:
+++ b/arch/mips/include/asm/mach-loongson64/topology.h
@@ -4,7 +4,11 @@
#ifdef CONFIG_NUMA
+#ifdef CONFIG_SMP
#define cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2)
+#else
+#define cpu_to_node(cpu) 0
+#endif
Are you saying you've enabled NUMA without enabling SMP? Does that make
sense?
NUMA option normally work with more than two nodes, though Loongson64 use it
default after patch 6fbde6b492dfc761ad60a68fb2cb32b1eb05b786. Loongson64(3A)'s
each node consists of 4 cpus while it only has 4 cpus. In other words, it has
only one node while open NUMA. I'm confused it if NUMA deponds on SMP.
I'll try fix it with unabling NUMA and SMP later.
Thanks.:-)
