[PATCH v5 8/8] perf report: Enable the runtime switching of perf data file

Feng Tang
2012-10-29T03:57:46Z

This is for tui browser only. This patch will check the returned
key of tui hists browser, if it's K_SWITH_INPUT_DATA, then recreate
a session for the new selected data file.

Signed-off-by: Feng Tang <feng.tang@intel.com>
---
tools/perf/builtin-report.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index f07eae7..3665a9a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -427,8 +427,14 @@ static int __cmd_report(struct perf_report *rep)

if (use_browser > 0) {
if (use_browser == 1) {
- perf_evlist__tui_browse_hists(session->evlist, help,
- NULL, NULL, 0);
+ ret = perf_evlist__tui_browse_hists(session->evlist,
+ help, NULL, NULL, 0);
+ /*
+ * Usually "ret" is the last pressed key, and we only
+ * care if the key notifies us to switch data file.
+ */
+ if (ret != K_SWITCH_INPUT_DATA)
+ ret = 0;
} else if (use_browser == 2) {
perf_evlist__gtk_browse_hists(session->evlist, help,
NULL, NULL, 0);
@@ -662,6 +668,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
else
input_name = "perf.data";
}
+
+repeat:
session = perf_session__new(input_name, O_RDONLY,
report.force, false, &report.tool);
if (session == NULL)
@@ -768,6 +776,12 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
}

ret = __cmd_report(&report);
+ if (ret == K_SWITCH_INPUT_DATA) {
+ perf_session__delete(session);
+ goto repeat;
+ } else
+ ret = 0;
+
error:
perf_session__delete(session);
return ret;
--
1.7.9.5