diff options
| author |   Ashok Raj <ashok.raj@intel.com> | 2005-11-11 14:32:40 -0800 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2006-01-05 10:24:20 -0800 |
| commit | ff741906ad3cf4b8ca1a958acb013a97a6381ca2 (patch) | |
| tree | 66a4c2dbacd4c10015824a6789f9206693003092 /arch/ia64/mm/discontig.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6 (diff) | |
| download | linux-dev-ff741906ad3cf4b8ca1a958acb013a97a6381ca2.tar.xz linux-dev-ff741906ad3cf4b8ca1a958acb013a97a6381ca2.zip | |
[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.c | 9 |
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()]; } |