1 files changed, 31 insertions, 0 deletions

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ed32284fbe32..ca0e79e2abaa 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -439,6 +439,37 @@ int ftrace_raw_output_prep(struct trace_iterator *iter,
 }
 EXPORT_SYMBOL(ftrace_raw_output_prep);
 
+static int ftrace_output_raw(struct trace_iterator *iter, char *name,
+                             char *fmt, va_list ap)
+{
+        struct trace_seq *s = &iter->seq;
+        int ret;
+
+        ret = trace_seq_printf(s, "%s: ", name);
+        if (!ret)
+                return TRACE_TYPE_PARTIAL_LINE;
+
+        ret = trace_seq_vprintf(s, fmt, ap);
+
+        if (!ret)
+                return TRACE_TYPE_PARTIAL_LINE;
+
+        return TRACE_TYPE_HANDLED;
+}
+
+int ftrace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...)
+{
+        va_list ap;
+        int ret;
+
+        va_start(ap, fmt);
+        ret = ftrace_output_raw(iter, name, fmt, ap);
+        va_end(ap);
+
+        return ret;
+}
+EXPORT_SYMBOL_GPL(ftrace_output_call);
+
 #ifdef CONFIG_KRETPROBES
 static inline const char *kretprobed(const char *name)
 {