perf annotate browser: Add visual cue for retq instruction

Just use a left arrow prefixing retqs.

Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-tnpfijuomrntbnl5vr6ibdwa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 13 insertions, 4 deletions

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 63206ca4336b..d0c606ecda05 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -127,11 +127,20 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 
                         dl->ins->ops->scnprintf(dl->ins, bf, sizeof(bf), &dl->ops,
                                                 !ab->use_offset);
-                        printed += 2;
-                } else
-                        scnprintf(bf, sizeof(bf), "  %-6.6s %s", dl->name, dl->ops.raw);
+                } else {
+                        if (strcmp(dl->name, "retq")) {
+                                slsmg_write_nstring(" ", 2);
+                        } else {
+                                SLsmg_set_char_set(1);
+                                SLsmg_write_char(SLSMG_LARROW_CHAR);
+                                SLsmg_set_char_set(0);
+                                SLsmg_write_char(' ');
+                        }
+
+                        scnprintf(bf, sizeof(bf), "%-6.6s %s", dl->name, dl->ops.raw);
+                }
 
-                slsmg_write_nstring(bf, width - 10 - printed);
+                slsmg_write_nstring(bf, width - 12 - printed);
         }
 
         if (current_entry)