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>
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 003f8ee..fe562db 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -155,7 +155,7 @@
 		/* Rest of them are completely unsupported. */
 	default:
 		printk("%s [%d]: Wants to read user offset %ld\n",
-		       current->comm, current->pid, offset);
+		       current->comm, task_pid_nr(current), offset);
 		pt_error_return(regs, EIO);
 		return;
 	}
@@ -222,7 +222,7 @@
 		/* Rest of them are completely unsupported or "no-touch". */
 	default:
 		printk("%s [%d]: Wants to write user offset %ld\n",
-		       current->comm, current->pid, offset);
+		       current->comm, task_pid_nr(current), offset);
 		goto failure;
 	}
 success: