x86_64: make /proc/interrupts work with dyn irq_desc
loop with irq_desc list
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index c3cbabe8..72dd739 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -645,15 +645,36 @@
*/
static void *int_seq_start(struct seq_file *f, loff_t *pos)
{
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ struct irq_desc *desc;
+ int irq;
+ int count = *pos;
+
+ for_each_irq_desc(irq, desc) {
+ if (count-- == 0)
+ return desc;
+ }
+
+ return NULL;
+#else
return (*pos <= nr_irqs) ? pos : NULL;
+#endif
}
+
static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
{
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ struct irq_desc *desc;
+
+ desc = ((struct irq_desc *)v)->next;
(*pos)++;
- if (*pos > nr_irqs)
- return NULL;
- return pos;
+
+ return desc;
+#else
+ (*pos)++;
+ return (*pos <= nr_irqs) ? pos : NULL;
+#endif
}
static void int_seq_stop(struct seq_file *f, void *v)
@@ -661,7 +682,6 @@
/* Nothing to do */
}
-
static const struct seq_operations int_seq_ops = {
.start = int_seq_start,
.next = int_seq_next,