Use helpers to obtain task pid in printks (arch code)

One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/xtensa/kernel/traps.c

@@ -176,7 +176,7 @@ void do_unhandled(struct pt_regs *regs, unsigned long exccause)
 	printk("Caught unhandled exception in '%s' "
 	       "(pid = %d, pc = %#010lx) - should not happen\n"
 	       "\tEXCCAUSE is %ld\n",
-	       current->comm, current->pid, regs->pc, exccause);
+	       current->comm, task_pid_nr(current), regs->pc, exccause);
 	force_sig(SIGILL, current);
 }
 
@@ -228,7 +228,7 @@ do_illegal_instruction(struct pt_regs *regs)
 	/* If in user mode, send SIGILL signal to current process. */
 
 	printk("Illegal Instruction in '%s' (pid = %d, pc = %#010lx)\n",
-	    current->comm, current->pid, regs->pc);
+	    current->comm, task_pid_nr(current), regs->pc);
 	force_sig(SIGILL, current);
 }
 
@@ -254,7 +254,7 @@ do_unaligned_user (struct pt_regs *regs)
 	current->thread.error_code = -3;
 	printk("Unaligned memory access to %08lx in '%s' "
 	       "(pid = %d, pc = %#010lx)\n",
-	       regs->excvaddr, current->comm, current->pid, regs->pc);
+	       regs->excvaddr, current->comm, task_pid_nr(current), regs->pc);
 	info.si_signo = SIGBUS;
 	info.si_errno = 0;
 	info.si_code = BUS_ADRALN;