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authorAlex Chiang <achiang@hp.com>2008-04-30 02:05:29 +0400
committerTony Luck <tony.luck@intel.com>2008-04-30 02:05:29 +0400
commitfe086a7bea7ab714930bd48addba961ceeef7634 (patch)
tree9595c1876f94a81a19166cc4eeb3fac84a895f5e /arch/ia64
parent6ff0bc94eee96fe45e5caa338c8b03cb99431fa9 (diff)
downloadlinux-fe086a7bea7ab714930bd48addba961ceeef7634.tar.xz
[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>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/topology.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index a2484fc1a06c..abb17a613b17 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -27,6 +27,15 @@
static struct ia64_cpu *sysfs_cpus;
+void arch_fix_phys_package_id(int num, u32 slot)
+{
+#ifdef CONFIG_SMP
+ if (cpu_data(num)->socket_id == -1)
+ cpu_data(num)->socket_id = slot;
+#endif
+}
+EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);
+
int arch_register_cpu(int num)
{
#if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU)