From: "zhangwei(Jovi)" <jovi.zhang...@huawei.com>
let modules can access ftrace_events
Signed-off-by: zhangwei(Jovi) <jovi.zhang...@huawei.com>
---
include/linux/ftrace_event.h | 1 +
kernel/trace/trace.h | 1 -
kernel/trace/trace_events.c | 2 ++
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index 4b55272..f6a6e48 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -346,6 +346,7 @@ enum {
#define EVENT_STORAGE_SIZE 128
extern struct mutex event_storage_mutex;
extern char event_storage[EVENT_STORAGE_SIZE];
+extern struct list_head ftrace_events;
extern int trace_event_raw_init(struct ftrace_event_call *call);
extern int trace_define_field(struct ftrace_event_call *call, const char *type,
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 0a1f4be..8f4966b 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -917,7 +917,6 @@ extern int event_trace_add_tracer(struct dentry *parent,
struct trace_array *tr)
extern int event_trace_del_tracer(struct trace_array *tr);
extern struct mutex event_mutex;
-extern struct list_head ftrace_events;
extern const char *__start___trace_bprintk_fmt[];
extern const char *__stop___trace_bprintk_fmt[];
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 09ca479..7c52a51 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -34,6 +34,8 @@ char event_storage[EVENT_STORAGE_SIZE];
EXPORT_SYMBOL_GPL(event_storage);
LIST_HEAD(ftrace_events);
+EXPORT_SYMBOL_GPL(ftrace_events);
+
static LIST_HEAD(ftrace_common_fields);
#define GFP_TRACE (GFP_KERNEL | __GFP_ZERO)
--
1.7.9.7
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