perf timechart: Always try to print at least 15 tasks

Always try to print at least 15 tasks no matter how long they run.

Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1383323151-19810-2-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 41c9bde2fb67f1418faceaaf86475a163694bdeb..bb21e57ff9bb2dcfb63d045be8284781de936097 100644 (file)
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -945,15 +945,17 @@ static void write_svg_file(const char *filename)
 {
        u64 i;
        int count;
+       int thresh = TIME_THRESH;
 
        numcpus++;
 
 
-       count = determine_display_tasks(TIME_THRESH);
-
-       /* We'd like to show at least 15 tasks; be less picky if we have fewer */
-       if (count < 15)
-               count = determine_display_tasks(TIME_THRESH / 10);
+       /* We'd like to show at least proc_num tasks;
+        * be less picky if we have fewer */
+       do {
+               count = determine_display_tasks(thresh);
+               thresh /= 10;
+       } while (!process_filter && thresh && count < 15);
 
        open_svg(filename, numcpus, count, first_time, last_time);