[PATCH v4 10/33] ftrace: Allow ftrace startup flags exist without dynamic ftrace

Masami Hiramatsu (Google)
2023-12-08T10:26:23Z

From: Steven Rostedt (VMware) <rostedt@goodmis.org>

Some of the flags for ftrace_startup() may be exposed even when
CONFIG_DYNAMIC_FTRACE is not configured in. This is fine as the difference
between dynamic ftrace and static ftrace is done within the internals of
ftrace itself. No need to have use cases fail to compile because dynamic
ftrace is disabled.

This change is needed to move some of the logic of what is passed to
ftrace_startup() out of the parameters of ftrace_startup().

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
include/linux/ftrace.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 0955baccbb87..7b08169aa51d 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -538,6 +538,15 @@ static inline void stack_tracer_disable(void) { }
static inline void stack_tracer_enable(void) { }
#endif

+enum {
+ FTRACE_UPDATE_CALLS = (1 << 0),
+ FTRACE_DISABLE_CALLS = (1 << 1),
+ FTRACE_UPDATE_TRACE_FUNC = (1 << 2),
+ FTRACE_START_FUNC_RET = (1 << 3),
+ FTRACE_STOP_FUNC_RET = (1 << 4),
+ FTRACE_MAY_SLEEP = (1 << 5),
+};
+
#ifdef CONFIG_DYNAMIC_FTRACE

void ftrace_arch_code_modify_prepare(void);
@@ -632,15 +641,6 @@ void ftrace_set_global_notrace(unsigned char *buf, int len, int reset);
void ftrace_free_filter(struct ftrace_ops *ops);
void ftrace_ops_set_global_filter(struct ftrace_ops *ops);

-enum {
- FTRACE_UPDATE_CALLS = (1 << 0),
- FTRACE_DISABLE_CALLS = (1 << 1),
- FTRACE_UPDATE_TRACE_FUNC = (1 << 2),
- FTRACE_START_FUNC_RET = (1 << 3),
- FTRACE_STOP_FUNC_RET = (1 << 4),
- FTRACE_MAY_SLEEP = (1 << 5),
-};
-
/*
* The FTRACE_UPDATE_* enum is used to pass information back
* from the ftrace_update_record() and ftrace_test_record()