---

yaml --- r: 178068 b: refs/heads/master c: 06d65bd h: refs/heads/master v: v3
git-mirror · Dec 17, 2009 · 895fd82 · 895fd82
1 parent 3761650
commit 895fd82
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Showing 4 changed files with 34 additions and 4 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 61c1917f47f73c968e92d04d15370b1dc3ec4592
+refs/heads/master: 06d65bda75341485d32f33da474b0664819ad497
diff --git a/trunk/arch/x86/include/asm/stacktrace.h b/trunk/arch/x86/include/asm/stacktrace.h
@@ -22,6 +22,12 @@ print_context_stack(struct thread_info *tinfo,
 		    const struct stacktrace_ops *ops, void *data,
 		    unsigned long *end, int *graph);
 
+extern unsigned long
+print_context_stack_bp(struct thread_info *tinfo,
+		       unsigned long *stack, unsigned long bp,
+		       const struct stacktrace_ops *ops, void *data,
+		       unsigned long *end, int *graph);
+
 /* Generic stack tracer with callbacks */
 
 struct stacktrace_ops {

diff --git a/trunk/arch/x86/kernel/cpu/perf_event.c b/trunk/arch/x86/kernel/cpu/perf_event.c
@@ -2336,7 +2336,7 @@ static const struct stacktrace_ops backtrace_ops = {
 	.warning_symbol		= backtrace_warning_symbol,
 	.stack			= backtrace_stack,
 	.address		= backtrace_address,
-	.walk_stack		= print_context_stack,
+	.walk_stack		= print_context_stack_bp,
 };
 
 #include "../dumpstack.h"

diff --git a/trunk/arch/x86/kernel/dumpstack.c b/trunk/arch/x86/kernel/dumpstack.c
@@ -109,6 +109,30 @@ print_context_stack(struct thread_info *tinfo,
 	}
 	return bp;
 }
+EXPORT_SYMBOL_GPL(print_context_stack);
+
+unsigned long
+print_context_stack_bp(struct thread_info *tinfo,
+		       unsigned long *stack, unsigned long bp,
+		       const struct stacktrace_ops *ops, void *data,
+		       unsigned long *end, int *graph)
+{
+	struct stack_frame *frame = (struct stack_frame *)bp;
+	unsigned long *ret_addr = &frame->return_address;
+
+	while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
+		unsigned long addr = *ret_addr;
+
+		if (__kernel_text_address(addr)) {
+			ops->address(data, addr, 1);
+			frame = frame->next_frame;
+			ret_addr = &frame->return_address;
+			print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
+		}
+	}
+	return (unsigned long)frame;
+}
+EXPORT_SYMBOL_GPL(print_context_stack_bp);
 
 
 static void
@@ -143,8 +167,8 @@ static void print_trace_address(void *data, unsigned long addr, int reliable)
 static const struct stacktrace_ops print_trace_ops = {
 	.warning		= print_trace_warning,
 	.warning_symbol		= print_trace_warning_symbol,
-	.stack 			= print_trace_stack,
-	.address 		= print_trace_address,
+	.stack			= print_trace_stack,
+	.address		= print_trace_address,
 	.walk_stack		= print_context_stack,
 };