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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 23:50:05 -0400
committerIngo Molnar <mingo@elte.hu>2008-10-16 10:52:29 -0400
commit08678b0841267c1d00d771fe01548d86043d065e (patch)
tree7debb21f9e9a768ced43077f7376797a0c46f8c0 /drivers/xen
parentbfea1238beac9d306eeac081c67de5ca6aec4c7a (diff)
generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[]
add CONFIG_HAVE_SPARSE_IRQ to for use condensed array. Get rid of irq_desc[] array assumptions. Preallocate 32 irq_desc, and irq_desc() will try to get more. ( No change in functionality is expected anywhere, except the odd build failure where we missed a code site or where a crossing commit itroduces new irq_desc[] usage. ) v2: according to Eric, change get_irq_desc() to irq_desc() Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/events.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index ed8235187dc0..56ace47f24d6 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -125,7 +125,7 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
125 125
126 BUG_ON(irq == -1); 126 BUG_ON(irq == -1);
127#ifdef CONFIG_SMP 127#ifdef CONFIG_SMP
128 irq_desc[irq].affinity = cpumask_of_cpu(cpu); 128 irq_to_desc(irq)->affinity = cpumask_of_cpu(cpu);
129#endif 129#endif
130 130
131 __clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]); 131 __clear_bit(chn, cpu_evtchn_mask[cpu_evtchn[chn]]);
@@ -139,8 +139,10 @@ static void init_evtchn_cpu_bindings(void)
139#ifdef CONFIG_SMP 139#ifdef CONFIG_SMP
140 int i; 140 int i;
141 /* By default all event channels notify CPU#0. */ 141 /* By default all event channels notify CPU#0. */
142 for (i = 0; i < nr_irqs; i++) 142 for (i = 0; i < nr_irqs; i++) {
143 irq_desc[i].affinity = cpumask_of_cpu(0); 143 struct irq_desc *desc = irq_to_desc(i);
144 desc->affinity = cpumask_of_cpu(0);
145 }
144#endif 146#endif
145 147
146 memset(cpu_evtchn, 0, sizeof(cpu_evtchn)); 148 memset(cpu_evtchn, 0, sizeof(cpu_evtchn));