[IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id

Legacy HP ia64 platforms currently cannot provide
/proc/cpuinfo/physical_id due to legacy SAL/PAL implementations.
However, that physical topology information can be obtained
via ACPI.

Provide an interface that gives ACPI one last chance to provide
physical_id for these legacy platforms. This logic only comes
into play iff:

- ACPI actually provides slot information for the CPU
- we lack a valid socket_id

Otherwise, we don't do anything.

Since x86 uses the ACPI processor driver as well, we provide a nop
stub function for arch_fix_phys_package_id() in asm-x86/topology.h

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index f2f72ef2a897..32863b3bb1d3 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -116,6 +116,8 @@ void build_cpu_to_node_map(void);
 #define smt_capable()                           (smp_num_siblings > 1)
 #endif
 
+extern void arch_fix_phys_package_id(int num, u32 slot);
+
 #define pcibus_to_cpumask(bus)  (pcibus_to_node(bus) == -1 ? \
                                         CPU_MASK_ALL : \
                                         node_to_cpumask(pcibus_to_node(bus)) \