perf record: Introduce record__finish_output() to finish a perf.data

Move code for finalizing 'perf.data' to record__finish_output(). It will
be used by following commits to split output to multiple files.

Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456479154-136027-23-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 25 insertions, 12 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index cb583b49a175..46e2772f838e 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -468,6 +468,29 @@ static void record__init_features(struct record *rec)
         perf_header__clear_feat(&session->header, HEADER_STAT);
 }
 
+static void
+record__finish_output(struct record *rec)
+{
+        struct perf_data_file *file = &rec->file;
+        int fd = perf_data_file__fd(file);
+
+        if (file->is_pipe)
+                return;
+
+        rec->session->header.data_size += rec->bytes_written;
+        file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR);
+
+        if (!rec->no_buildid) {
+                process_buildids(rec);
+
+                if (rec->buildid_all)
+                        dsos__hit_all(rec->session);
+        }
+        perf_session__write_header(rec->session, rec->evlist, fd, true);
+
+        return;
+}
+
 static volatile int workload_exec_errno;
 
 /*
@@ -785,18 +808,8 @@ out_child:
         /* this will be recalculated during process_buildids() */
         rec->samples = 0;
 
-        if (!err && !file->is_pipe) {
-                rec->session->header.data_size += rec->bytes_written;
-                file->size = lseek(perf_data_file__fd(file), 0, SEEK_CUR);
-
-                if (!rec->no_buildid) {
-                        process_buildids(rec);
-
-                        if (rec->buildid_all)
-                                dsos__hit_all(rec->session);
-                }
-                perf_session__write_header(rec->session, rec->evlist, fd, true);
-        }
+        if (!err)
+                record__finish_output(rec);
 
         if (!err && !quiet) {
                 char samples[128];