perf c2c report: Add help windows

Adding help windows to display key/action mappings
for both browsers.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-zni4apopx6a9eyxsosm1ebh1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 17 insertions, 2 deletions

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 205939527945..4af66835bcb7 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2181,6 +2181,11 @@ static int perf_c2c__browse_cacheline(struct hist_entry *he)
         struct c2c_cacheline_browser *cl_browser;
         struct hist_browser *browser;
         int key = -1;
+        const char help[] =
+        " ENTER         Togle callchains (if present) \n"
+        " n             Togle Node details info \n"
+        " s             Togle full lenght of symbol and source line columns \n"
+        " q             Return back to cacheline list \n";
 
         /* Display compact version first. */
         c2c.symbol_full = false;
@@ -2201,7 +2206,7 @@ static int perf_c2c__browse_cacheline(struct hist_entry *he)
         c2c_browser__update_nr_entries(browser);
 
         while (1) {
-                key = hist_browser__run(browser, "help");
+                key = hist_browser__run(browser, "? - help");
 
                 switch (key) {
                 case 's':
@@ -2213,6 +2218,9 @@ static int perf_c2c__browse_cacheline(struct hist_entry *he)
                         break;
                 case 'q':
                         goto out;
+                case '?':
+                        ui_browser__help_window(&browser->b, help);
+                        break;
                 default:
                         break;
                 }
@@ -2251,6 +2259,10 @@ static int perf_c2c__hists_browse(struct hists *hists)
 {
         struct hist_browser *browser;
         int key = -1;
+        const char help[] =
+        " d             Display cacheline details \n"
+        " ENTER         Togle callchains (if present) \n"
+        " q             Quit \n";
 
         browser = perf_c2c_browser__new(hists);
         if (browser == NULL)
@@ -2263,7 +2275,7 @@ static int perf_c2c__hists_browse(struct hists *hists)
         c2c_browser__update_nr_entries(browser);
 
         while (1) {
-                key = hist_browser__run(browser, "help");
+                key = hist_browser__run(browser, "? - help");
 
                 switch (key) {
                 case 'q':
@@ -2271,6 +2283,9 @@ static int perf_c2c__hists_browse(struct hists *hists)
                 case 'd':
                         perf_c2c__browse_cacheline(browser->he_selection);
                         break;
+                case '?':
+                        ui_browser__help_window(&browser->b, help);
+                        break;
                 default:
                         break;
                 }