We have introduced CONFIG_NUMA in a previous patch. And this option is enabled only on x86 at the current stage. In a follow up patch, we will enable this option for Arm. But we still want users to be able to disable the CONFIG_NUMA via Kconfig. In this case, keep the fake NUMA API, will make Arm code still able to work with NUMA aware memory allocation and scheduler.
Signed-off-by: Wei Chen <wei.c...@arm.com> Tested-by: Jiamei Xie <jiamei....@arm.com> Reviewed-by: Stefano Stabellini <sstabell...@kernel.org> --- v3 -> v4: no change v2 -> v3: Add Tb. v1 -> v2: No change. --- xen/arch/arm/include/asm/numa.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/xen/arch/arm/include/asm/numa.h b/xen/arch/arm/include/asm/numa.h index e4c4d89192..268a9db055 100644 --- a/xen/arch/arm/include/asm/numa.h +++ b/xen/arch/arm/include/asm/numa.h @@ -5,6 +5,8 @@ typedef u8 nodeid_t; +#ifndef CONFIG_NUMA + /* Fake one node for now. See also node_online_map. */ #define cpu_to_node(cpu) 0 #define node_to_cpumask(node) (cpu_online_map) @@ -24,6 +26,9 @@ extern mfn_t first_valid_mfn; #define node_spanned_pages(nid) (max_page - mfn_x(first_valid_mfn)) #define node_start_pfn(nid) (mfn_x(first_valid_mfn)) #define __node_distance(a, b) (20) + +#endif + #define arch_want_default_dmazone() (false) #endif /* __ARCH_ARM_NUMA_H */ -- 2.25.1
