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authorJiaxun Yang <jiaxun.yang@flygoat.com>2024-06-03 15:45:53 +0800
committerHuacai Chen <chenhuacai@loongson.cn>2024-06-03 15:45:53 +0800
commit3de9c42d02a79a5e09bbee7a4421ddc00cfd5c6d (patch)
treedbf4975146ba93d65b3cfeb885430a94a1721c19 /arch
parentb56f67a6c748bb009f313f91651c8020d2338d63 (diff)
LoongArch: Add all CPUs enabled by fdt to NUMA node 0
NUMA enabled kernel on FDT based machine fails to boot because CPUs are all in NUMA_NO_NODE and mm subsystem won't accept that. Fix by adding them to default NUMA node at FDT parsing phase and move numa_add_cpu(0) to a later point. Cc: stable@vger.kernel.org Fixes: 88d4d957edc7 ("LoongArch: Add FDT booting support from efi system table") Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch')
-rw-r--r--arch/loongarch/include/asm/numa.h1
-rw-r--r--arch/loongarch/kernel/smp.c5
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/loongarch/include/asm/numa.h b/arch/loongarch/include/asm/numa.h
index 27f319b49862..b5f9de9f102e 100644
--- a/arch/loongarch/include/asm/numa.h
+++ b/arch/loongarch/include/asm/numa.h
@@ -56,6 +56,7 @@ extern int early_cpu_to_node(int cpu);
static inline void early_numa_add_cpu(int cpuid, s16 node) { }
static inline void numa_add_cpu(unsigned int cpu) { }
static inline void numa_remove_cpu(unsigned int cpu) { }
+static inline void set_cpuid_to_node(int cpuid, s16 node) { }
static inline int early_cpu_to_node(int cpu)
{
diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c
index 0dfe2388ef41..1436d2465939 100644
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -273,7 +273,6 @@ static void __init fdt_smp_setup(void)
if (cpuid == loongson_sysconf.boot_cpu_id) {
cpu = 0;
- numa_add_cpu(cpu);
} else {
cpu = cpumask_next_zero(-1, cpu_present_mask);
}
@@ -283,6 +282,9 @@ static void __init fdt_smp_setup(void)
set_cpu_present(cpu, true);
__cpu_number_map[cpuid] = cpu;
__cpu_logical_map[cpu] = cpuid;
+
+ early_numa_add_cpu(cpu, 0);
+ set_cpuid_to_node(cpuid, 0);
}
loongson_sysconf.nr_cpus = num_processors;
@@ -468,6 +470,7 @@ void smp_prepare_boot_cpu(void)
set_cpu_possible(0, true);
set_cpu_online(0, true);
set_my_cpu_offset(per_cpu_offset(0));
+ numa_add_cpu(0);
rr_node = first_node(node_online_map);
for_each_possible_cpu(cpu) {