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authorYinghai Lu <yhlu.kernel@gmail.com>2008-08-19 20:50:20 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:52:51 +0200
commit52b17329d6d0a4824b89206803a430915031ff23 (patch)
tree714884d90d67a771eef01863a677d502b2d758fc /arch/x86/kernel/irq_64.c
parenta2f9f43858db64cb8b45c4f6746d7a52b80d4dcb (diff)
downloadlinux-52b17329d6d0a4824b89206803a430915031ff23.tar.bz2
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>
Diffstat (limited to 'arch/x86/kernel/irq_64.c')
-rw-r--r--arch/x86/kernel/irq_64.c31
1 files changed, 24 insertions, 7 deletions
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 5d5976e0311a..7bd841a9c640 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -70,9 +70,27 @@ static inline void stack_overflow_check(struct pt_regs *regs)
int show_interrupts(struct seq_file *p, void *v)
{
- int i = *(loff_t *) v, j;
+ int i, j;
struct irqaction * action;
unsigned long flags;
+ unsigned int entries;
+ struct irq_desc *desc;
+ int tail = 0;
+
+#ifdef CONFIG_HAVE_SPARSE_IRQ
+ desc = (struct irq_desc *)v;
+ entries = -1U;
+ i = desc->irq;
+ if (!desc->next)
+ tail = 1;
+#else
+ entries = nr_irqs - 1;
+ i = *(loff_t *) v;
+ if (i == nr_irqs)
+ tail = 1;
+ else
+ desc = irq_to_desc(i);
+#endif
if (i == 0) {
seq_printf(p, " ");
@@ -81,12 +99,8 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
}
- if (i < nr_irqs) {
+ if (i <= entries) {
unsigned any_count = 0;
- struct irq_desc *desc = irq_to_desc(i);
-
- if (!desc)
- return 0;
spin_lock_irqsave(&desc->lock, flags);
#ifndef CONFIG_SMP
@@ -116,7 +130,9 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
skip:
spin_unlock_irqrestore(&desc->lock, flags);
- } else if (i == nr_irqs) {
+ }
+
+ if (tail) {
seq_printf(p, "NMI: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
@@ -155,6 +171,7 @@ skip:
seq_printf(p, " Spurious interrupts\n");
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
}
+
return 0;
}