[IA64] Count disabled cpus as potential hot-pluggable CPUs
Minor updates to earlier patch.
- Added to documentation to add ia64 as well.
- Minor clarification on how to use disabled cpus
- used plain max instead of max_t per Andew Morton.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 34795ed..ecd44bd 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -794,24 +794,21 @@
int possible, disabled_cpus;
disabled_cpus = total_cpus - available_cpus;
+
if (additional_cpus == -1) {
- if (disabled_cpus > 0) {
- possible = total_cpus;
+ if (disabled_cpus > 0)
additional_cpus = disabled_cpus;
- }
- else {
- possible = available_cpus;
+ else
additional_cpus = 0;
- }
- } else {
- possible = available_cpus + additional_cpus;
- }
+ }
+
+ possible = available_cpus + additional_cpus;
+
if (possible > NR_CPUS)
possible = NR_CPUS;
printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
- possible,
- max_t(int, additional_cpus, 0));
+ possible, max((possible - available_cpus), 0));
for (i = 0; i < possible; i++)
cpu_set(i, cpu_possible_map);