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/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 5feee72..4b05dc5 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -382,16 +382,16 @@
 
 		if (ret != 2 || old_insn.thumb != BREAKINST_THUMB)
 			printk(KERN_ERR "%s:%d: corrupted Thumb breakpoint at "
-				"0x%08lx (0x%04x)\n", task->comm, task->pid,
-				addr, old_insn.thumb);
+				"0x%08lx (0x%04x)\n", task->comm,
+				task_pid_nr(task), addr, old_insn.thumb);
 	} else {
 		ret = swap_insn(task, addr & ~3, &old_insn.arm,
 				&bp->insn.arm, 4);
 
 		if (ret != 4 || old_insn.arm != BREAKINST_ARM)
 			printk(KERN_ERR "%s:%d: corrupted ARM breakpoint at "
-				"0x%08lx (0x%08x)\n", task->comm, task->pid,
-				addr, old_insn.arm);
+				"0x%08lx (0x%08x)\n", task->comm,
+				task_pid_nr(task), addr, old_insn.arm);
 	}
 }