diff options
| author | David Rientjes <rientjes@google.com> | 2010-12-22 17:23:51 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-12-23 15:27:14 -0800 |
| commit | f51bf3073a145a5b3263fd882c52d6ec04b687da (patch) | |
| tree | c9e07ebc957cbb768c4e750b1a67640e0ad81118 /arch/x86/include/asm/acpi.h | |
| parent | 4e76f4e67a106ed827ca721b4c8b622047cd2f6d (diff) | |
x86, numa: Fake apicid and pxm mappings for NUMA emulation
This patch adds the equivalent of acpi_fake_nodes() for AMD Northbridge
platforms. The goal is to fake the apicid-to-node mappings for NUMA
emulation so the physical topology of the machine is correctly maintained
within the kernel.
This change also fakes proximity domains for both ACPI and k8 code so the
physical distance between emulated nodes is maintained via
node_distance(). This exports the correct distances via
/sys/devices/system/node/.../distance based on the underlying topology.
A new helper function, fake_physnodes(), is introduced to correctly
invoke the correct NUMA code to fake these two mappings based on the
system type. If there is no underlying NUMA configuration, all cpus are
mapped to node 0 for local distance.
Since acpi_fake_nodes() is no longer called with CONFIG_ACPI_NUMA, it's
prototype can be removed from the header file for such a configuration.
Signed-off-by: David Rientjes <rientjes@google.com>
LKML-Reference: <alpine.DEB.2.00.1012221701360.3701@chino.kir.corp.google.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/acpi.h')
| -rw-r--r-- | arch/x86/include/asm/acpi.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index b326fa99db5..8288daf72dc 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -193,11 +193,6 @@ extern int acpi_scan_nodes(unsigned long start, unsigned long end); 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 /* CONFIG_ACPI_NUMA */ #define acpi_unlazy_tlb(x) leave_mm(x) |