1 files changed, 25 insertions, 29 deletions

diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 1cd1d0c83b6d..47ee620d15d2 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <linux/console.h>
 #include <linux/bug.h>
+#include <linux/ratelimit.h>
 
 #include <asm/assembly.h>
 #include <asm/uaccess.h>
@@ -42,9 +43,6 @@
 
 #include "../math-emu/math-emu.h"       /* for handle_fpe() */
 
-#define PRINT_USER_FAULTS /* (turn this on if you want user faults to be */
-                          /*  dumped to the console via printk)          */
-
 #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
 DEFINE_SPINLOCK(pa_dbit_lock);
 #endif
@@ -160,6 +158,17 @@ void show_regs(struct pt_regs *regs)
         }
 }
 
+static DEFINE_RATELIMIT_STATE(_hppa_rs,
+        DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST);
+
+#define parisc_printk_ratelimited(critical, regs, fmt, ...)     {             \
+        if ((critical || show_unhandled_signals) && __ratelimit(&_hppa_rs)) { \
+                printk(fmt, ##__VA_ARGS__);                                   \
+                show_regs(regs);                                              \
+        }                                                                     \
+}
+
+
 static void do_show_stack(struct unwind_frame_info *info)
 {
         int i = 1;
@@ -229,12 +238,10 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
                 if (err == 0)
                         return; /* STFU */
 
-                printk(KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
+                parisc_printk_ratelimited(1, regs,
+                        KERN_CRIT "%s (pid %d): %s (code %ld) at " RFMT "\n",
                         current->comm, task_pid_nr(current), str, err, regs->iaoq[0]);
-#ifdef PRINT_USER_FAULTS
-                /* XXX for debugging only */
-                show_regs(regs);
-#endif
+
                 return;
         }
 
@@ -321,14 +328,11 @@ static void handle_break(struct pt_regs *regs)
                         (tt == BUG_TRAP_TYPE_NONE) ? 9 : 0);
         }
 
-#ifdef PRINT_USER_FAULTS
-        if (unlikely(iir != GDB_BREAK_INSN)) {
-                printk(KERN_DEBUG "break %d,%d: pid=%d command='%s'\n",
+        if (unlikely(iir != GDB_BREAK_INSN))
+                parisc_printk_ratelimited(0, regs,
+                        KERN_DEBUG "break %d,%d: pid=%d command='%s'\n",
                         iir & 31, (iir>>13) & ((1<<13)-1),
                         task_pid_nr(current), current->comm);
-                show_regs(regs);
-        }
-#endif
 
         /* send standard GDB signal */
         handle_gdb_break(regs, TRAP_BRKPT);
@@ -758,11 +762,9 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
 
         default:
                 if (user_mode(regs)) {
-#ifdef PRINT_USER_FAULTS
-                        printk(KERN_DEBUG "\nhandle_interruption() pid=%d command='%s'\n",
-                            task_pid_nr(current), current->comm);
-                        show_regs(regs);
-#endif
+                        parisc_printk_ratelimited(0, regs, KERN_DEBUG
+                                "handle_interruption() pid=%d command='%s'\n",
+                                task_pid_nr(current), current->comm);
                         /* SIGBUS, for lack of a better one. */
                         si.si_signo = SIGBUS;
                         si.si_code = BUS_OBJERR;
@@ -779,16 +781,10 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
 
         if (user_mode(regs)) {
             if ((fault_space >> SPACEID_SHIFT) != (regs->sr[7] >> SPACEID_SHIFT)) {
-#ifdef PRINT_USER_FAULTS
-                if (fault_space == 0)
-                        printk(KERN_DEBUG "User Fault on Kernel Space ");
-                else
-                        printk(KERN_DEBUG "User Fault (long pointer) (fault %d) ",
-                               code);
-                printk(KERN_CONT "pid=%d command='%s'\n",
-                       task_pid_nr(current), current->comm);
-                show_regs(regs);
-#endif
+                parisc_printk_ratelimited(0, regs, KERN_DEBUG
+                                "User fault %d on space 0x%08lx, pid=%d command='%s'\n",
+                                code, fault_space,
+                                task_pid_nr(current), current->comm);
                 si.si_signo = SIGSEGV;
                 si.si_errno = 0;
                 si.si_code = SEGV_MAPERR;