x86, numa: Avoid compiling NUMA emulation functions without CONFIG_NUMA_EMU

Both acpi_get_nodes() and amd_get_nodes() are only necessary when
CONFIG_NUMA_EMU is enabled, so avoid compiling them when the option is
disabled.

Signed-off-by: David Rientjes <rientjes@google.com>
LKML-Reference: <alpine.DEB.2.00.1012221701210.3701@chino.kir.corp.google.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

4 files changed, 12 insertions, 2 deletions

diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 55d106b5e31b..b326fa99db57 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -188,14 +188,17 @@ extern int acpi_numa;
 extern int acpi_get_nodes(struct bootnode *physnodes);
 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
+
+#ifdef CONFIG_NUMA_EMU
 extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
                                    int num_nodes);
+#endif
 #else
 static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
                                    int num_nodes)
 {
 }
-#endif
+#endif /* CONFIG_ACPI_NUMA */
 
 #define acpi_unlazy_tlb(x)      leave_mm(x)
 
diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h
index 6aee50d655d1..9c16cde63f04 100644
--- a/arch/x86/include/asm/amd_nb.h
+++ b/arch/x86/include/asm/amd_nb.h
@@ -9,10 +9,13 @@ struct bootnode;
 extern int early_is_amd_nb(u32 value);
 extern int amd_cache_northbridges(void);
 extern void amd_flush_garts(void);
-extern int amd_get_nodes(struct bootnode *nodes);
 extern int amd_numa_init(unsigned long start_pfn, unsigned long end_pfn);
 extern int amd_scan_nodes(void);
 
+#ifdef CONFIG_NUMA_EMU
+extern int amd_get_nodes(struct bootnode *nodes);
+#endif
+
 struct amd_northbridge {
         struct pci_dev *misc;
 };
diff --git a/arch/x86/mm/amdtopology_64.c b/arch/x86/mm/amdtopology_64.c
index 51fae9cfdecb..fe050af614e2 100644
--- a/arch/x86/mm/amdtopology_64.c
+++ b/arch/x86/mm/amdtopology_64.c
@@ -69,6 +69,7 @@ static __init void early_get_boot_cpu_id(void)
         early_init_lapic_mapping();
 }
 
+#ifdef CONFIG_NUMA_EMU
 int __init amd_get_nodes(struct bootnode *physnodes)
 {
         int i;
@@ -81,6 +82,7 @@ int __init amd_get_nodes(struct bootnode *physnodes)
         }
         return ret;
 }
+#endif /* CONFIG_NUMA_EMU */
 
 int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn)
 {
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index a35cb9d8b060..8241bf0f6eb2 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -339,6 +339,7 @@ static int __init nodes_cover_memory(const struct bootnode *nodes)
 
 void __init acpi_numa_arch_fixup(void) {}
 
+#ifdef CONFIG_NUMA_EMU
 int __init acpi_get_nodes(struct bootnode *physnodes)
 {
         int i;
@@ -351,6 +352,7 @@ int __init acpi_get_nodes(struct bootnode *physnodes)
         }
         return ret;
 }
+#endif /* CONFIG_NUMA_EMU */
 
 /* Use the information discovered above to actually set up the nodes. */
 int __init acpi_scan_nodes(unsigned long start, unsigned long end)