[PATCH 02/16] arm64: kconfig: make percpu related configs not depend on NUMA
From: Yang Shi
Date: Wed Jul 15 2026 - 14:15:33 EST
The percpu set up code has been moved out of arch_numa.c, so it is
unnecessary to have percpu related kernel configs depend on NUMA.
Signed-off-by: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/Kconfig | 6 +++---
arch/arm64/kernel/smp.c | 10 ++++++----
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b3afe0688919..2e1bd79a579c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -224,6 +224,7 @@ config ARM64
select MMU_GATHER_RCU_TABLE_FREE
select HAVE_RSEQ
select HAVE_RUST if RUSTC_SUPPORTS_ARM64
+ select HAVE_SETUP_PER_CPU_AREA
select HAVE_STACKPROTECTOR
select HAVE_STATIC_CALL if CFI
select HAVE_SYSCALL_TRACEPOINTS
@@ -239,6 +240,8 @@ config ARM64
select LOCK_MM_AND_FIND_VMA
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE
+ select NEED_PER_CPU_EMBED_FIRST_CHUNK
+ select NEED_PER_CPU_PAGE_FIRST_CHUNK
select NEED_SG_DMA_LENGTH
select OF
select OF_EARLY_FLATTREE
@@ -1581,9 +1584,6 @@ config NUMA
bool "NUMA Memory Allocation and Scheduler Support"
select GENERIC_ARCH_NUMA
select OF_NUMA
- select HAVE_SETUP_PER_CPU_AREA
- select NEED_PER_CPU_EMBED_FIRST_CHUNK
- select NEED_PER_CPU_PAGE_FIRST_CHUNK
select USE_PERCPU_NUMA_NODE_ID
help
Enable NUMA (Non-Uniform Memory Access) support.
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 0dab4e9c97e4..28ff889658d3 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -819,16 +819,18 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
}
}
-#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
+#ifdef CONFIG_NUMA
extern int cpu_to_node_map[NR_CPUS];
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
-EXPORT_SYMBOL(__per_cpu_offset);
-
int early_cpu_to_node(int cpu)
{
return cpu_to_node_map[cpu];
}
+#endif
+
+#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
+unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
+EXPORT_SYMBOL(__per_cpu_offset);
static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
{
--
2.47.0