alpha: use __ratelimit

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

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: Matt Turner <mattst88@gmail.com>

1 files changed, 3 insertions, 7 deletions

diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 6ee7655b7568..b14f015008ad 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -17,6 +17,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kallsyms.h>
+#include <linux/ratelimit.h>
 
 #include <asm/gentrap.h>
 #include <asm/uaccess.h>
@@ -771,8 +772,7 @@ asmlinkage void
 do_entUnaUser(void __user * va, unsigned long opcode,
               unsigned long reg, struct pt_regs *regs)
 {
-        static int cnt = 0;
-        static unsigned long last_time;
+        static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5);
 
         unsigned long tmp1, tmp2, tmp3, tmp4;
         unsigned long fake_reg, *reg_addr = &fake_reg;
@@ -783,15 +783,11 @@ do_entUnaUser(void __user * va, unsigned long opcode,
            with the unaliged access.  */
 
         if (!test_thread_flag (TIF_UAC_NOPRINT)) {
-                if (cnt >= 5 && time_after(jiffies, last_time + 5 * HZ)) {
-                        cnt = 0;
-                }
-                if (++cnt < 5) {
+                if (__ratelimit(&ratelimit)) {
                         printk("%s(%d): unaligned trap at %016lx: %p %lx %ld\n",
                                current->comm, task_pid_nr(current),
                                regs->pc - 4, va, opcode, reg);
                 }
-                last_time = jiffies;
         }
         if (test_thread_flag (TIF_UAC_SIGBUS))
                 goto give_sigbus;