perf tools: Move symbol__calc_percent() call to outside symbol__disassemble()

We need to call symbol__calc_percent() periodicaly for top, so it's no
longer convenient to keep it in symbol__disassemble().

Let's separate the symbol__disassemble() to allocate and init
the symbol annotation structs and symbol__calc_percent() to
compute the lines percentages based on symbol hists data.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-gtnp8t4tb00q6lag07psn5nq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/browsers/annotate.c

@@ -1126,6 +1126,8 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
 		goto out_free_offsets;
 	}
 
+	symbol__calc_percent(sym, evsel);
+
 	ui_helpline__push("Press ESC to exit");
 
 	notes = symbol__annotation(sym);

tools/perf/ui/gtk/annotate.c

@@ -177,6 +177,8 @@ static int symbol__gtk_annotate(struct symbol *sym, struct map *map,
 		return -1;
 	}
 
+	symbol__calc_percent(sym, evsel);
+
 	if (perf_gtk__is_active_context(pgctx)) {
 		window = pgctx->main_window;
 		notebook = pgctx->notebook;

tools/perf/util/annotate.c

@@ -1653,12 +1653,7 @@ int symbol__annotate(struct symbol *sym, struct map *map,
 		}
 	}
 
-	err = symbol__disassemble(sym, &args);
-	if (!err)
-		symbol__calc_percent(sym, evsel);
-
-	return err;
-
+	return symbol__disassemble(sym, &args);
 }
 
 static void insert_source_line(struct rb_root *root, struct annotation_line *al)
@@ -2005,6 +2000,8 @@ int symbol__tty_annotate(struct symbol *sym, struct map *map,
 	if (symbol__annotate(sym, map, evsel, 0, NULL, NULL) < 0)
 		return -1;
 
+	symbol__calc_percent(sym, evsel);
+
 	if (print_lines) {
 		srcline_full_filename = full_paths;
 		symbol__calc_lines(sym, map, &source_line);