perf newt: Add single key shortcuts for zoom into DSO and threads

'D'/'d' for zooming into the DSO in the current highlighted hist entry,
'T'/'t' for zooming into the current thread.

Suggested-by: Ingo Molnar <mingo@elte.hu>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 20 insertions, 3 deletions

diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c
index 139eb1a16cd8..6974431d212f 100644
--- a/tools/perf/util/newt.c
+++ b/tools/perf/util/newt.c
@@ -752,6 +752,10 @@ static int hist_browser__populate(struct hist_browser *self, struct hists *hists
 
         newtFormAddHotKey(self->form, 'A');
         newtFormAddHotKey(self->form, 'a');
+        newtFormAddHotKey(self->form, 'D');
+        newtFormAddHotKey(self->form, 'd');
+        newtFormAddHotKey(self->form, 'T');
+        newtFormAddHotKey(self->form, 't');
         newtFormAddHotKey(self->form, NEWT_KEY_RIGHT);
         newtFormAddHotKey(self->form, NEWT_KEY_LEFT);
         newtFormAddComponents(self->form, self->tree, NULL);
@@ -834,9 +838,20 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na
                     annotate = -2, zoom_dso = -2, zoom_thread = -2;
 
                 newtFormRun(browser->form, &es);
+
+                thread = hist_browser__selected_thread(browser);
+                dso = browser->selection->map ? browser->selection->map->dso : NULL;
+
                 if (es.reason == NEWT_EXIT_HOTKEY) {
-                        if (toupper(es.u.key) == 'A')
+                        switch (toupper(es.u.key)) {
+                        case 'A':
                                 goto do_annotate;
+                        case 'D':
+                                goto zoom_dso;
+                        case 'T':
+                                goto zoom_thread;
+                        default:;
+                        }
                         if (toupper(es.u.key) == 'Q' ||
                             es.u.key == CTRL('c'))
                                 break;
@@ -866,7 +881,6 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na
                              browser->selection->sym->name) > 0)
                         annotate = nr_options++;
 
-                thread = hist_browser__selected_thread(browser);
                 if (thread != NULL &&
                     asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
                              (thread_filter ? "out of" : "into"),
@@ -874,7 +888,6 @@ int hists__browse(struct hists *self, const char *helpline, const char *input_na
                              thread->pid) > 0)
                         zoom_thread = nr_options++;
 
-                dso = browser->selection->map ? browser->selection->map->dso : NULL;
                 if (dso != NULL &&
                     asprintf(&options[nr_options], "Zoom %s %s DSO",
                              (dso_filter ? "out of" : "into"),
@@ -910,12 +923,15 @@ do_annotate:
 
                         hist_entry__annotate_browser(he);
                 } else if (choice == zoom_dso) {
+zoom_dso:
                         if (dso_filter) {
                                 pstack__remove(fstack, &dso_filter);
 zoom_out_dso:
                                 ui_helpline__pop();
                                 dso_filter = NULL;
                         } else {
+                                if (dso == NULL)
+                                        continue;
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
                                                    dso->kernel ? "the Kernel" : dso->short_name);
                                 dso_filter = dso;
@@ -927,6 +943,7 @@ zoom_out_dso:
                         if (hist_browser__populate(browser, self, msg) < 0)
                                 goto out;
                 } else if (choice == zoom_thread) {
+zoom_thread:
                         if (thread_filter) {
                                 pstack__remove(fstack, &thread_filter);
 zoom_out_thread: