perf tools: Record events info also when :record suffix is used.

You can enable a counter's PERF_SAMPLE_RAW attribute in two
fashions:

- using the -R option (every counters get PERF_SAMPLE_RAW)
- using the :record suffix in a trace event counter name

Currently we record the events info in a trace.info file from
perf record when the former method is used but we omit it with
the latter.

Check both situations.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1250543271-8383-3-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 3ce2f03..acbe594 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -520,9 +520,6 @@ static int __cmd_record(int argc, const char **argv)
        signal(SIGCHLD, sig_handler);
        signal(SIGINT, sig_handler);
 
-       if (raw_samples)
-               read_tracing_data();
-
        if (!stat(output_name, &st) && st.st_size) {
                if (!force && !append_file) {
                        fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
@@ -550,6 +547,17 @@ static int __cmd_record(int argc, const char **argv)
        else
                header = perf_header__new();
 
+
+       if (raw_samples) {
+               read_tracing_data();
+       } else {
+               for (i = 0; i < nr_counters; i++) {
+                       if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
+                               read_tracing_data();
+                               break;
+                       }
+               }
+       }
        atexit(atexit_header);
 
        if (!system_wide) {