[SPARC64]: Rate limited kernel unaligned trap logging, ala IA64.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/unaligned.c b/arch/sparc64/kernel/unaligned.c
index 001e8518331f..bb2d68577855 100644
--- a/arch/sparc64/kernel/unaligned.c
+++ b/arch/sparc64/kernel/unaligned.c
@@ -279,12 +279,21 @@ static void kernel_mna_trap_fault(void)
 
 asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
 {
+        static unsigned long count, last_time;
         enum direction dir = decode_direction(insn);
         int size = decode_access_size(insn);
 
         current_thread_info()->kern_una_regs = regs;
         current_thread_info()->kern_una_insn = insn;
 
+        if (jiffies - last_time > 5 * HZ)
+                count = 0;
+        if (count < 5) {
+                last_time = jiffies;
+                count++;
+                printk("Kernel unaligned access at TPC[%lx]\n", regs->tpc);
+        }
+
         if (!ok_for_kernel(insn) || dir == both) {
                 printk("Unsupported unaligned load/store trap for kernel "
                        "at <%016lx>.\n", regs->tpc);