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-rw-r--r--kernel/trace/trace_events.c6
-rw-r--r--kernel/trace/trace_export.c12
-rw-r--r--kernel/trace/trace_output.c21
3 files changed, 14 insertions, 25 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index b8f73b333a3c..2f7b8e31e3a4 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -27,6 +27,12 @@
DEFINE_MUTEX(event_mutex);
+DEFINE_MUTEX(event_storage_mutex);
+EXPORT_SYMBOL_GPL(event_storage_mutex);
+
+char event_storage[EVENT_STORAGE_SIZE];
+EXPORT_SYMBOL_GPL(event_storage);
+
LIST_HEAD(ftrace_events);
static LIST_HEAD(ftrace_common_fields);
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 39c746c5ae73..7c3e3e72e2b6 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -96,10 +96,14 @@ static void __always_unused ____ftrace_check_##name(void) \
#define __array(type, item, len) \
do { \
BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
- ret = ftrace_event_define_field(event_call, #type, len, \
- #item, offsetof(typeof(field), item), \
- sizeof(field.item), \
- is_signed_type(type), filter_type); \
+ mutex_lock(&event_storage_mutex); \
+ snprintf(event_storage, sizeof(event_storage), \
+ "%s[%d]", #type, len); \
+ ret = trace_define_field(event_call, event_storage, #item, \
+ offsetof(typeof(field), item), \
+ sizeof(field.item), \
+ is_signed_type(type), filter_type); \
+ mutex_unlock(&event_storage_mutex); \
if (ret) \
return ret; \
} while (0);
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ee8d74840b88..ca0e79e2abaa 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -20,10 +20,6 @@ static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly;
static int next_event_type = __TRACE_LAST_TYPE + 1;
-#define EVENT_STORAGE_SIZE 128
-static DEFINE_MUTEX(event_storage_mutex);
-static char event_storage[EVENT_STORAGE_SIZE];
-
int trace_print_seq(struct seq_file *m, struct trace_seq *s)
{
int len = s->len >= PAGE_SIZE ? PAGE_SIZE - 1 : s->len;
@@ -474,23 +470,6 @@ int ftrace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...)
}
EXPORT_SYMBOL_GPL(ftrace_output_call);
-int ftrace_event_define_field(struct ftrace_event_call *call,
- char *type, int len, char *item, int offset,
- int field_size, int sign, int filter)
-{
- int ret;
-
- mutex_lock(&event_storage_mutex);
- snprintf(event_storage, sizeof(event_storage),
- "%s[%d]", type, len);
- ret = trace_define_field(call, event_storage, item, offset,
- field_size, sign, filter);
- mutex_unlock(&event_storage_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(ftrace_event_define_field);
-
#ifdef CONFIG_KRETPROBES
static inline const char *kretprobed(const char *name)
{