[IA64] support for cpu0 removal
here is the BSP removal support for IA64. Its pretty much the same thing that
was released a while back, but has your feedback incorporated.
- Removed CONFIG_BSP_REMOVE_WORKAROUND and associated cmdline param
- Fixed compile issue with sn2/zx1 due to a undefined fix_b0_for_bsp
- some formatting nits (whitespace etc)
This has been tested on tiger and long back by alex on hp systems as well.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index c87d6d1..573d5cc 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -528,12 +528,17 @@
void *per_cpu_init(void)
{
int cpu;
+ static int first_time = 1;
+
if (smp_processor_id() != 0)
return __per_cpu_start + __per_cpu_offset[smp_processor_id()];
- for (cpu = 0; cpu < NR_CPUS; cpu++)
- per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu];
+ if (first_time) {
+ first_time = 0;
+ for (cpu = 0; cpu < NR_CPUS; cpu++)
+ per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu];
+ }
return __per_cpu_start + __per_cpu_offset[smp_processor_id()];
}