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Subject[PATCH v2 2/2] perf report: Enable the runtime switching of perf data file
Date
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.

V2: Move the setup_brower() before the "repeat" jump point.

Signed-off-by: Feng Tang <feng.tang@intel.com>
---
tools/perf/builtin-report.c | 38 +++++++++++++++++++++++++++-----------
1 file changed, 27 insertions(+), 11 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 0d22187..91555d4 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -468,9 +468,17 @@ 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,
- &session->header.env);
+ ret = perf_evlist__tui_browse_hists(session->evlist,
+ help,
+ NULL,
+ &session->header.env);
+ /*
+ * 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);
@@ -708,6 +716,16 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
else
input_name = "perf.data";
}
+
+ if (strcmp(input_name, "-") != 0)
+ setup_browser(true);
+ else {
+ use_browser = 0;
+ perf_hpp__column_enable(PERF_HPP__OVERHEAD);
+ perf_hpp__init();
+ }
+
+repeat:
session = perf_session__new(input_name, O_RDONLY,
report.force, false, &report.tool);
if (session == NULL)
@@ -733,14 +751,6 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)

}

- if (strcmp(input_name, "-") != 0)
- setup_browser(true);
- else {
- use_browser = 0;
- perf_hpp__column_enable(PERF_HPP__OVERHEAD);
- perf_hpp__init();
- }
-
setup_sorting(report_usage, options);

/*
@@ -809,6 +819,12 @@ 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


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