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Commit 27cc64c7 authored by David S. Miller's avatar David S. Miller
Browse files

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



Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 20edac8a

arch/sparc64/kernel/unaligned.c

+9 −0
Original line number Original line Diff line number Diff line
@@ -279,12 +279,21 @@ static void kernel_mna_trap_fault(void) 




asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)

asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)

{

{

	static unsigned long count, last_time;

	enum direction dir = decode_direction(insn);

	enum direction dir = decode_direction(insn);

	int size = decode_access_size(insn);

	int size = decode_access_size(insn);





	current_thread_info()->kern_una_regs = regs;

	current_thread_info()->kern_una_regs = regs;

	current_thread_info()->kern_una_insn = insn;

	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) {

	if (!ok_for_kernel(insn) || dir == both) {

		printk("Unsupported unaligned load/store trap for kernel "

		printk("Unsupported unaligned load/store trap for kernel "

		       "at <%016lx>.\n", regs->tpc);

		       "at <%016lx>.\n", regs->tpc);