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authorFrederic Weisbecker <fweisbec@gmail.com>2008-12-04 23:51:23 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-05 14:47:44 +0100
commit21a8c466f99063eeb8567318b4e305eda9015408 (patch)
treebc15ed9d28a4f1a52d390ceca6893d84de50a232 /include/linux/ftrace.h
parent77d683f3e0258d522c5506e7b5fd05c9411184d9 (diff)
downloadop-kernel-dev-21a8c466f99063eeb8567318b4e305eda9015408.zip
op-kernel-dev-21a8c466f99063eeb8567318b4e305eda9015408.tar.gz
tracing/ftrace: provide the macro task_curr_ret_stack()
Impact: cleanup As suggested by Steven Rostedt, this patch provide a new macro task_curr_ret_stack() to move the cpp conditionnal CONFIG into the linux/ftrace.h headers. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/ftrace.h')
-rw-r--r--include/linux/ftrace.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index b295d31..b9b4d0a 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -8,6 +8,7 @@
#include <linux/types.h>
#include <linux/kallsyms.h>
#include <linux/bitops.h>
+#include <linux/sched.h>
#ifdef CONFIG_FUNCTION_TRACER
@@ -387,9 +388,19 @@ extern void unregister_ftrace_graph(void);
extern void ftrace_graph_init_task(struct task_struct *t);
extern void ftrace_graph_exit_task(struct task_struct *t);
+
+static inline int task_curr_ret_stack(struct task_struct *t)
+{
+ return t->curr_ret_stack;
+}
#else
static inline void ftrace_graph_init_task(struct task_struct *t) { }
static inline void ftrace_graph_exit_task(struct task_struct *t) { }
+
+static inline int task_curr_ret_stack(struct task_struct *tsk)
+{
+ return -1;
+}
#endif
#ifdef CONFIG_TRACING
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