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authorAshok Raj <ashok.raj@intel.com>2005-11-11 14:32:40 -0800
committerTony Luck <tony.luck@intel.com>2006-01-05 10:24:20 -0800
commitff741906ad3cf4b8ca1a958acb013a97a6381ca2 (patch)
tree66a4c2dbacd4c10015824a6789f9206693003092 /arch/ia64/mm/discontig.c
parentdb9edfd7e339ca4113153d887e782dd05be5a9eb (diff)
[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>
Diffstat (limited to 'arch/ia64/mm/discontig.c')
-rw-r--r--arch/ia64/mm/discontig.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index c87d6d1d5813..573d5cc63e2b 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -528,12 +528,17 @@ void __init find_memory(void)
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()];
}