From 13b55dd49ff2ed2572318efcf4af19a3b5616ce2 Mon Sep 17 00:00:00 2001
From: Mike Travis <travis@sgi.com>
Date: Sat, 10 Jan 2009 21:58:11 -0800
Subject: [PATCH] --- yaml --- r: 136378 b: refs/heads/master c:
 c7a3589e7a1f8fdbd2536fe1bfa60b37f5121c69 h: refs/heads/master v: v3

---
 [refs]                     |  2 +-
 trunk/drivers/xen/events.c | 21 ++++++++++++++++-----
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/[refs] b/[refs]
index cdd9649d87d7..77bfb0450083 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d38b223c86db3162dc85b5a1997ac8a210e1660b
+refs/heads/master: c7a3589e7a1f8fdbd2536fe1bfa60b37f5121c69
diff --git a/trunk/drivers/xen/events.c b/trunk/drivers/xen/events.c
index e0767ff35d6c..ed7527b3745a 100644
--- a/trunk/drivers/xen/events.c
+++ b/trunk/drivers/xen/events.c
@@ -75,7 +75,14 @@ enum {
 static int evtchn_to_irq[NR_EVENT_CHANNELS] = {
 	[0 ... NR_EVENT_CHANNELS-1] = -1
 };
-static unsigned long cpu_evtchn_mask[NR_CPUS][NR_EVENT_CHANNELS/BITS_PER_LONG];
+struct cpu_evtchn_s {
+	unsigned long bits[NR_EVENT_CHANNELS/BITS_PER_LONG];
+};
+static struct cpu_evtchn_s *cpu_evtchn_mask_p;
+static inline unsigned long *cpu_evtchn_mask(int cpu)
+{
+	return cpu_evtchn_mask_p[cpu].bits;
+}
 static u8 cpu_evtchn[NR_EVENT_CHANNELS];
 
 /* Reference counts for bindings to IRQs. */
@@ -115,7 +122,7 @@ static inline unsigned long active_evtchns(unsigned int cpu,
 					   unsigned int idx)
 {
 	return (sh->evtchn_pending[idx] &
-		cpu_evtchn_mask[cpu][idx] &
+		cpu_evtchn_mask(cpu)[idx] &
 		~sh->evtchn_mask[idx]);
 }
 
@@ -128,8 +135,8 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
 	cpumask_copy(irq_to_desc(irq)->affinity, cpumask_of(cpu));
 #endif
 
-	__clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]);
-	__set_bit(chn, cpu_evtchn_mask[cpu]);
+	__clear_bit(chn, cpu_evtchn_mask(cpu_evtchn[chn]));
+	__set_bit(chn, cpu_evtchn_mask(cpu));
 
 	cpu_evtchn[chn] = cpu;
 }
@@ -147,7 +154,7 @@ static void init_evtchn_cpu_bindings(void)
 #endif
 
 	memset(cpu_evtchn, 0, sizeof(cpu_evtchn));
-	memset(cpu_evtchn_mask[0], ~0, sizeof(cpu_evtchn_mask[0]));
+	memset(cpu_evtchn_mask(0), ~0, sizeof(cpu_evtchn_mask(0)));
 }
 
 static inline unsigned int cpu_from_evtchn(unsigned int evtchn)
@@ -822,6 +829,10 @@ static struct irq_chip xen_dynamic_chip __read_mostly = {
 void __init xen_init_IRQ(void)
 {
 	int i;
+	size_t size = nr_cpu_ids * sizeof(struct cpu_evtchn_s);
+
+	cpu_evtchn_mask_p = kmalloc(size, GFP_KERNEL);
+	BUG_ON(cpu_evtchn_mask == NULL);
 
 	init_evtchn_cpu_bindings();