aboutsummaryrefslogtreecommitdiff
path: root/arch/ia64/kernel/irq.c
diff options
context:
space:
mode:
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/kernel/irq.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/kernel/irq.c')
-rw-r--r--arch/ia64/kernel/irq.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index d33244c3275..5ce908ef9c9 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -163,8 +163,19 @@ void fixup_irqs(void)
{
unsigned int irq;
extern void ia64_process_pending_intr(void);
+ extern void ia64_disable_timer(void);
+ extern volatile int time_keeper_id;
+
+ 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);
+ }
- ia64_set_itv(1<<16);
/*
* Phase 1: Locate irq's bound to this cpu and
* relocate them for cpu removal.