[IA64] use __ratelimit

Replace open-coded rate limiting logic with __ratelimit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 640479304ac0..f14c35f9b03a 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -29,6 +29,7 @@
 #include <linux/threads.h>
 #include <linux/bitops.h>
 #include <linux/irq.h>
+#include <linux/ratelimit.h>
 
 #include <asm/delay.h>
 #include <asm/intrinsics.h>
@@ -467,13 +468,9 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
                 sp = ia64_getreg(_IA64_REG_SP);
 
                 if ((sp - bsp) < 1024) {
-                        static unsigned char count;
-                        static long last_time;
+                        static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5);
 
-                        if (time_after(jiffies, last_time + 5 * HZ))
-                                count = 0;
-                        if (++count < 5) {
-                                last_time = jiffies;
+                        if (__ratelimit(&ratelimit)) {
                                 printk("ia64_handle_irq: DANGER: less than "
                                        "1KB of free stack space!!\n"
                                        "(bsp=0x%lx, sp=%lx)\n", bsp, sp);