[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/kernel/irq.c b/arch/ia64/kernel/irq.c
index d33244c..5ce908e 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -163,8 +163,19 @@
{
unsigned int irq;
extern void ia64_process_pending_intr(void);
+ extern void ia64_disable_timer(void);
+ extern volatile int time_keeper_id;
- ia64_set_itv(1<<16);
+ ia64_disable_timer();
+
+ /*
+ * Find a new timesync master
+ */
+ if (smp_processor_id() == time_keeper_id) {
+ time_keeper_id = first_cpu(cpu_online_map);
+ printk ("CPU %d is now promoted to time-keeper master\n", time_keeper_id);
+ }
+
/*
* Phase 1: Locate irq's bound to this cpu and
* relocate them for cpu removal.