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sh: Use the new stack unwinder API

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Instead of implementing our own stack unwinder via dump_trace() we
should use the new stack unwinder API because it is more modular. This
change allows us to decouple the interface for generating stacktraces
from the implementation of a stack unwinder.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Matt Fleming
2009-08-11 22:43:20 +01:00
committed by Paul Mundt
parent bf61ad1f87
commit 0eff9f66de
3 changed files with 12 additions and 15 deletions
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5
arch/sh/kernel/stacktrace.c
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@@ -13,6 +13,7 @@
#include <linux/stacktrace.h>
#include <linux/thread_info.h>
#include <linux/module.h>
#include <asm/unwinder.h>
#include <asm/ptrace.h>
#include <asm/stacktrace.h>
@@ -57,7 +58,7 @@ void save_stack_trace(struct stack_trace *trace)
{
unsigned long *sp = (unsigned long *)current_stack_pointer;
dump_trace(current, NULL, sp, &save_stack_ops, trace);
unwind_stack(current, NULL, sp, &save_stack_ops, trace);
}
EXPORT_SYMBOL_GPL(save_stack_trace);
@@ -89,6 +90,6 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
unsigned long *sp = (unsigned long *)tsk->thread.sp;
dump_trace(current, NULL, sp, &save_stack_ops_nosched, trace);
unwind_stack(current, NULL, sp, &save_stack_ops_nosched, trace);
}
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);