perf ui browser: Add a warn on unhandled hotkey helper

Will be used by the various browsers, looks like:

                                        ┌─Warning!───────────────────────────────────────────┐
  29.15 │ 3c:  cmpl    $0x3,(%rbx)      │                                                    │
   3.77 │    ↓ je      51               │'Ctrl+V' key not associated, use 'h' to see actions!│
  16.59 │      movq    0x3b0(%rbx),%rdx │                                                    │
  30.65 │      movl    0x8(%rdx),%eax   │                                                    │
   3.77 │      cmpl    %eax,%edi        │Press any key...                                    │
   0.25 │    ↓ jb      82               └────────────────────────────────────────────────────┘

Suggested-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/Z_TYux5fUg2pW-pF@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 19503e8387385d4ff3c19304a8f46edd89a2ce96..115aa1af5a0218cdcdbedc01e1b603189cbaa176 100644 (file)
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -233,6 +233,14 @@ int ui_browser__warning(struct ui_browser *browser, int timeout,
        return key;
 }
 
+int ui_browser__warn_unhandled_hotkey(struct ui_browser *browser, int key, int timeout, const char *help)
+{
+       char kname[32];
+
+       key_name(key, kname, sizeof(kname));
+       return ui_browser__warning(browser, timeout, "\n'%s' key not associated%s!\n", kname, help ?: "");
+}
+
 int ui_browser__help_window(struct ui_browser *browser, const char *text)
 {
        int key;

diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index 6e98d5f8f71cc538a554b1e6e535a4fb65cf4414..f59ad4f14d33a4213fd6b95680ee140de840f477 100644 (file)
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -66,6 +66,7 @@ void __ui_browser__vline(struct ui_browser *browser, unsigned int column,
 
 int ui_browser__warning(struct ui_browser *browser, int timeout,
                        const char *format, ...);
+int ui_browser__warn_unhandled_hotkey(struct ui_browser *browser, int key, int timeout, const char *help);
 int ui_browser__help_window(struct ui_browser *browser, const char *text);
 bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text);
 int ui_browser__input_window(const char *title, const char *text, char *input,