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.t...@intel.com>
---
 tools/perf/builtin-report.c |   22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index fc25100..5392a8e 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -427,9 +427,17 @@ 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);
@@ -663,6 +671,8 @@ 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)
@@ -763,6 +773,12 @@ 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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