perf script: Add option --show-text-poke-events

Consistent with other new events, add an option to perf script to
display text poke events and ksymbol events. Both text poke events and
ksymbol events are displayed because some text pokes (e.g. ftrace
trampolines) have corresponding ksymbol events.

Signed-off-by: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: H. Peter Anvin <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Leo Yan <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Masami Hiramatsu <[e-mail]>
Cc: Mathieu Poirier <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Steven Rostedt (VMware) <[e-mail]>
Cc: [e-mail]
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Documentation/perf-script.txt

···
 --show-cgroup-events
 	Display cgroup events i.e. events of type PERF_RECORD_CGROUP.
 
+--show-text-poke-events
+	Display text poke events i.e. events of type PERF_RECORD_TEXT_POKE and
+	PERF_RECORD_KSYMBOL.
+
 --demangle::
 	Demangle symbol names to human readable form. It's enabled by default,
 	disable with --no-demangle.

tools/perf/builtin-script.c

···
 	bool			show_round_events;
 	bool			show_bpf_events;
 	bool			show_cgroup_events;
+	bool			show_text_poke_events;
 	bool			allocated;
 	bool			per_event_dump;
 	bool			stitch_lbr;
···
 			   sample->tid);
 }
 
+static int process_text_poke_events(struct perf_tool *tool,
+				    union perf_event *event,
+				    struct perf_sample *sample,
+				    struct machine *machine)
+{
+	if (perf_event__process_text_poke(tool, event, sample, machine) < 0)
+		return -1;
+
+	return print_event(tool, event, sample, machine, sample->pid,
+			   sample->tid);
+}
+
 static void sig_handler(int sig __maybe_unused)
 {
 	session_done = 1;
···
 	if (script->show_bpf_events) {
 		script->tool.ksymbol = process_bpf_events;
 		script->tool.bpf     = process_bpf_events;
+	}
+	if (script->show_text_poke_events) {
+		script->tool.ksymbol   = process_bpf_events;
+		script->tool.text_poke = process_text_poke_events;
 	}
 
 	if (perf_script__setup_per_event_dump(script)) {
···
 		    "Show round events (if recorded)"),
 	OPT_BOOLEAN('\0', "show-bpf-events", &script.show_bpf_events,
 		    "Show bpf related events (if recorded)"),
+	OPT_BOOLEAN('\0', "show-text-poke-events", &script.show_text_poke_events,
+		    "Show text poke related events (if recorded)"),
 	OPT_BOOLEAN('\0', "per-event-dump", &script.per_event_dump,
 		    "Dump trace output to files named by the monitored events"),
 	OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),