From 9212ddb5eada64fec5a08b28207401f3cc3d0876 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 25 Dec 2008 11:21:20 +0100
Subject: [PATCH] stacktrace: provide save_stack_trace_tsk() weak alias

Impact: build fix

Some architectures have not implemented save_stack_trace_tsk() yet:

  fs/built-in.o: In function `proc_pid_stack':
  base.c:(.text+0x3f140): undefined reference to `save_stack_trace_tsk'

So warn about that if the facility is used.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
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