1 files changed, 15 insertions, 3 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index d060fc50c8a4..d4464f7fcea5 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -35,6 +35,7 @@ static unsigned int		page_size;
 static unsigned int             mmap_pages                      =    128;
 static int                      freq                            =   1000;
 static int                      output;
+static int                      pipe_output                     =      0;
 static const char               *output_name                    = "perf.data";
 static int                      group                           =      0;
 static unsigned int             realtime_prio                   =      0;
@@ -449,7 +450,9 @@ static int __cmd_record(int argc, const char **argv)
                 exit(-1);
         }
 
-        if (!stat(output_name, &st) && st.st_size) {
+        if (!strcmp(output_name, "-"))
+                pipe_output = 1;
+        else if (!stat(output_name, &st) && st.st_size) {
                 if (!force) {
                         if (!append_file) {
                                 pr_err("Error, output file %s exists, use -A "
@@ -474,7 +477,10 @@ static int __cmd_record(int argc, const char **argv)
         else
                 flags |= O_TRUNC;
 
-        output = open(output_name, flags, S_IRUSR|S_IWUSR);
+        if (pipe_output)
+                output = STDOUT_FILENO;
+        else
+                output = open(output_name, flags, S_IRUSR | S_IWUSR);
         if (output < 0) {
                 perror("failed to create output file");
                 exit(-1);
@@ -513,6 +519,8 @@ static int __cmd_record(int argc, const char **argv)
                 }
 
                 if (!child_pid) {
+                        if (pipe_output)
+                                dup2(2, 1);
                         close(child_ready_pipe[0]);
                         close(go_pipe[1]);
                         fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
@@ -564,7 +572,11 @@ static int __cmd_record(int argc, const char **argv)
                         open_counters(cpumap[i]);
         }
 
-        if (file_new) {
+        if (pipe_output) {
+                err = perf_header__write_pipe(output);
+                if (err < 0)
+                        return err;
+        } else if (file_new) {
                 err = perf_header__write(&session->header, output, false);
                 if (err < 0)
                         return err;