ARM: SMP: provide individual IPI interrupt statistics

This separates out the individual IPI interrupt counts from the
total IPI count, which allows better visibility of what IPIs are
being used for.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 4e7a7d272212..6276f01df9e4 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -62,6 +62,11 @@ int show_interrupts(struct seq_file *p, void *v)
         for (prec = 3, n = 1000; prec < 10 && n <= nr_irqs; prec++)
                 n *= 10;
 
+#ifdef CONFIG_SMP
+        if (prec < 4)
+                prec = 4;
+#endif
+
         if (i == 0) {
                 char cpuname[12];