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/ia64/kernel/perfmon_default_smpl.c b/arch/ia64/kernel/perfmon_default_smpl.c
index ff80eab..a7af1cb 100644
--- a/arch/ia64/kernel/perfmon_default_smpl.c
+++ b/arch/ia64/kernel/perfmon_default_smpl.c
@@ -44,11 +44,11 @@
 	int ret = 0;
 
 	if (data == NULL) {
-		DPRINT(("[%d] no argument passed\n", task->pid));
+		DPRINT(("[%d] no argument passed\n", task_pid_nr(task)));
 		return -EINVAL;
 	}
 
-	DPRINT(("[%d] validate flags=0x%x CPU%d\n", task->pid, flags, cpu));
+	DPRINT(("[%d] validate flags=0x%x CPU%d\n", task_pid_nr(task), flags, cpu));
 
 	/*
 	 * must hold at least the buffer header + one minimally sized entry
@@ -88,7 +88,7 @@
 	hdr->hdr_count        = 0UL;
 
 	DPRINT(("[%d] buffer=%p buf_size=%lu hdr_size=%lu hdr_version=%u cur_offs=%lu\n",
-		task->pid,
+		task_pid_nr(task),
 		buf,
 		hdr->hdr_buf_size,
 		sizeof(*hdr),
@@ -245,7 +245,7 @@
 static int
 default_exit(struct task_struct *task, void *buf, struct pt_regs *regs)
 {
-	DPRINT(("[%d] exit(%p)\n", task->pid, buf));
+	DPRINT(("[%d] exit(%p)\n", task_pid_nr(task), buf));
 	return 0;
 }