perf annotate: Introduce the --stdio2 output mode

This uses the TUI augmented formatting routines, modulo interactivity.

  # perf annotate --ignore-vmlinux --stdio2 _raw_spin_lock_irqsave
  _raw_spin_lock_irqsave() /proc/kcore
  Event: cycles:ppp

  Percent

              Disassembly of section load0:

              ffffffff9a8734b0 <load0>:
                nop
                push   %rbx
   50.00        pushfq
                pop    %rax
                nop
                mov    %rax,%rbx
                cli
                nop
                xor    %eax,%eax
                mov    $0x1,%edx
   50.00        lock   cmpxchg %edx,(%rdi)
                test   %eax,%eax
              ↓ jne    2b
                mov    %rbx,%rax
                pop    %rbx
              ← retq
          2b:   mov    %eax,%esi
              → callq  queued_spin_lock_slowpath
                mov    %rbx,%rax
                pop    %rbx
              ← retq

Tested-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-6cte5o8z84mbivbvqlg14uh1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/annotate.c

@@ -1965,6 +1965,72 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
 	return more;
 }
 
+static void FILE__set_percent_color(void *fp __maybe_unused,
+				    double percent __maybe_unused,
+				    bool current __maybe_unused)
+{
+}
+
+static int FILE__set_jumps_percent_color(void *fp __maybe_unused,
+					 int nr __maybe_unused, bool current __maybe_unused)
+{
+	return 0;
+}
+
+static int FILE__set_color(void *fp __maybe_unused, int color __maybe_unused)
+{
+	return 0;
+}
+
+static void FILE__printf(void *fp, const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	vfprintf(fp, fmt, args);
+	va_end(args);
+}
+
+static void FILE__write_graph(void *fp, int graph)
+{
+	const char *s;
+	switch (graph) {
+
+	case DARROW_CHAR: s = "↓"; break;
+	case UARROW_CHAR: s = "↑"; break;
+	case LARROW_CHAR: s = "←"; break;
+	case RARROW_CHAR: s = "→"; break;
+	default:		s = "?"; break;
+	}
+
+	fputs(s, fp);
+}
+
+int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp)
+{
+	struct annotation *notes = symbol__annotation(sym);
+	struct annotation_write_ops ops = {
+		.first_line		 = true,
+		.obj			 = fp,
+		.set_color		 = FILE__set_color,
+		.set_percent_color	 = FILE__set_percent_color,
+		.set_jumps_percent_color = FILE__set_jumps_percent_color,
+		.printf			 = FILE__printf,
+		.write_graph		 = FILE__write_graph,
+	};
+	struct annotation_line *al;
+
+	list_for_each_entry(al, &notes->src->source, node) {
+		if (annotation_line__filter(al, notes))
+			continue;
+		annotation_line__write(al, notes, &ops);
+		fputc('\n', fp);
+		ops.first_line = false;
+	}
+
+	return 0;
+}
+
 void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
 {
 	struct annotation *notes = symbol__annotation(sym);
@@ -2165,6 +2231,32 @@ static void symbol__calc_lines(struct symbol *sym, struct map *map,
 	annotation__calc_lines(notes, map, root, start);
 }
 
+int symbol__tty_annotate2(struct symbol *sym, struct map *map,
+			  struct perf_evsel *evsel, bool print_lines,
+			  bool full_paths)
+{
+	struct dso *dso = map->dso;
+	struct rb_root source_line = RB_ROOT;
+	struct annotation_options opts = {
+		.use_offset	= true,
+	};
+
+	if (symbol__annotate2(sym, map, evsel, &opts, NULL) < 0)
+		return -1;
+
+	if (print_lines) {
+		srcline_full_filename = full_paths;
+		symbol__calc_lines(sym, map, &source_line);
+		print_summary(&source_line, dso->long_name);
+	}
+
+	symbol__annotate_fprintf2(sym, stdout);
+
+	annotated_source__purge(symbol__annotation(sym)->src);
+
+	return 0;
+}
+
 int symbol__tty_annotate(struct symbol *sym, struct map *map,
 			 struct perf_evsel *evsel, bool print_lines,
 			 bool full_paths, int min_pcnt, int max_lines)