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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-12-07 15:48:15 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-12-07 15:48:15 -0500
commit34161db6b14d984fb9b06c735b7b42f8803f6851 (patch)
tree99656278b6697f1cde5b05894b7c0ee22c63a00e /arch/sh/kernel/stacktrace.c
parent5847e1f4d058677c5e46dc6c3e3c70e8855ea3ba (diff)
parent620034c84d1d939717bdfbe02c51a3fee43541c3 (diff)
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/ into merge_linus
Conflicts: include/linux/sunrpc/xprt.h net/sunrpc/xprtsock.c Fix up conflicts with the workqueue changes.
Diffstat (limited to 'arch/sh/kernel/stacktrace.c')
-rw-r--r--arch/sh/kernel/stacktrace.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c
new file mode 100644
index 000000000000..0d5268afe80f
--- /dev/null
+++ b/arch/sh/kernel/stacktrace.c
@@ -0,0 +1,43 @@
1/*
2 * arch/sh/kernel/stacktrace.c
3 *
4 * Stack trace management functions
5 *
6 * Copyright (C) 2006 Paul Mundt
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
10 * for more details.
11 */
12#include <linux/sched.h>
13#include <linux/stacktrace.h>
14#include <linux/thread_info.h>
15#include <asm/ptrace.h>
16
17/*
18 * Save stack-backtrace addresses into a stack_trace buffer.
19 */
20void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
21{
22 unsigned long *sp;
23
24 if (!task)
25 task = current;
26 if (task == current)
27 sp = (unsigned long *)current_stack_pointer;
28 else
29 sp = (unsigned long *)task->thread.sp;
30
31 while (!kstack_end(sp)) {
32 unsigned long addr = *sp++;
33
34 if (__kernel_text_address(addr)) {
35 if (trace->skip > 0)
36 trace->skip--;
37 else
38 trace->entries[trace->nr_entries++] = addr;
39 if (trace->nr_entries >= trace->max_entries)
40 break;
41 }
42 }
43}