perf report: Add progress bars

For when we are processing the events and inserting the entries in the
browser.

Experimentation here: naming "ui_something" we may be treading into
creating a TUI/GUI set of routines that can then be implemented in terms
of multiple backends.

Also the time it takes for adding things to the "browser" takes, visually
(I guess I should do some profiling here ;-) ), more time than for
processing the events...

That means we probably need to create a custom hist_entry browser, so
that we reuse the structures we have in place instead of duplicating
them in newt.

But progress was made and at least we can see something while long files
are being loaded, that must be one of UI 101 bullet points :-)

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 631f8157fc1..6a15daeda57 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -88,11 +88,15 @@ static inline struct map *
 }
 
 #ifdef NO_NEWT_SUPPORT
-static inline void perf_session__browse_hists(struct rb_root *hists __used,
+static inline int perf_session__browse_hists(struct rb_root *hists __used,
+					      u64 nr_hists __used,
 					      u64 session_total __used,
-					      const char *helpline __used) {}
+					      const char *helpline __used)
+{
+	return 0;
+}
 #else
-void perf_session__browse_hists(struct rb_root *hists, u64 session_total,
-				const char *helpline);
+int perf_session__browse_hists(struct rb_root *hists, u64 nr_hists,
+				u64 session_total, const char *helpline);
 #endif
 #endif /* __PERF_SESSION_H */