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

Link: http://lkml.kernel.org/n/tip-zni4apopx6a9eyxsosm1e...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/builtin-c2c.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 0902aba4cf19..e1e74ed27075 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2178,6 +2178,11 @@ 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;
@@ -2198,7 +2203,7 @@ 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':
@@ -2210,6 +2215,9 @@ 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;
                }
@@ -2248,6 +2256,10 @@ 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)
@@ -2260,7 +2272,7 @@ 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':
@@ -2268,6 +2280,9 @@ 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;
                }
-- 
2.7.4

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