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>

diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 6ee7655b7568bf36719f2447e389831244721f01..b14f015008ada5e90d580b0589d4ff5144a1602e 100644 (file)
--- 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;