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[PATCH v5 5/8] xen/arm: use !CONFIG_NUMA to keep fake NUMA API
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Wei Chen <wei.chen@xxxxxxx>
- Date: Mon, 6 Jun 2022 12:09:13 +0800
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- Cc: <nd@xxxxxxx>, Wei Chen <wei.chen@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Jiamei Xie <jiamei.xie@xxxxxxx>
- Delivery-date: Mon, 06 Jun 2022 04:10:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Nodisclaimer: true
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.chen@xxxxxxx>
Tested-by: Jiamei Xie <jiamei.xie@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
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
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