Merge tag 'perf-tools-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:
 "Fixes:
   - Fixes for 'perf bench numa'.

   - Always memset source before memcpy in 'perf bench mem'.

   - Quote CC and CXX for their arguments to fix build in environments
     using those variables to pass more than just the compiler names.

   - Fix module symbol processing, addressing regression detected via
     "perf test".

   - Allow multiple probes in record+script_probe_vfs_getname.sh 'perf
     test' entry.

  Improvements:
   - Add script to autogenerate socket family name id->string table from
     copy of kernel header, used so far in 'perf trace'.

   - 'perf ftrace' improvements to provide similar options for this
     utility so that one can go from 'perf record', 'perf trace', etc to
     'perf ftrace' just by changing the name of the subcommand.

   - Prefer new "sched:sched_waking" trace event when it exists in 'perf
     sched' post processing.

   - Update POWER9 metrics to utilize other metrics.

   - Fall back to querying debuginfod if debuginfo not found locally.

  Miscellaneous:
   - Sync various kvm headers with kernel sources"

* tag 'perf-tools-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (40 commits)
  perf ftrace: Make option description initials all capital letters
  perf build-ids: Fall back to debuginfod query if debuginfo not found
  perf bench numa: Remove dead code in parse_nodes_opt()
  perf stat: Update POWER9 metrics to utilize other metrics
  perf ftrace: Add change log
  perf: ftrace: Add set_tracing_options() to set all trace options
  perf ftrace: Add option --tid to filter by thread id
  perf ftrace: Add option -D/--delay to delay tracing
  perf: ftrace: Allow set graph depth by '--graph-opts'
  perf ftrace: Add support for trace option tracing_thresh
  perf ftrace: Add option 'verbose' to show more info for graph tracer
  perf ftrace: Add support for tracing option 'irq-info'
  perf ftrace: Add support for trace option funcgraph-irqs
  perf ftrace: Add support for trace option sleep-time
  perf ftrace: Add support for tracing option 'func_stack_trace'
  perf tools: Add general function to parse sublevel options
  perf ftrace: Add option '--inherit' to trace children processes
  perf ftrace: Show trace column header
  perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer size
  perf ftrace: Factor out function write_tracing_file_int()
  ...

1 files changed, 29 insertions, 3 deletions

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 459e4229945e..0c7d599fa555 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -2398,6 +2398,15 @@ static void timehist_print_wakeup_event(struct perf_sched *sched,
 	printf("\n");
 }
 
+static int timehist_sched_wakeup_ignore(struct perf_tool *tool __maybe_unused,
+					union perf_event *event __maybe_unused,
+					struct evsel *evsel __maybe_unused,
+					struct perf_sample *sample __maybe_unused,
+					struct machine *machine __maybe_unused)
+{
+	return 0;
+}
+
 static int timehist_sched_wakeup_event(struct perf_tool *tool,
 				       union perf_event *event __maybe_unused,
 				       struct evsel *evsel,
@@ -2958,9 +2967,10 @@ static int timehist_check_attr(struct perf_sched *sched,
 
 static int perf_sched__timehist(struct perf_sched *sched)
 {
-	const struct evsel_str_handler handlers[] = {
+	struct evsel_str_handler handlers[] = {
 		{ "sched:sched_switch",       timehist_sched_switch_event, },
 		{ "sched:sched_wakeup",	      timehist_sched_wakeup_event, },
+		{ "sched:sched_waking",       timehist_sched_wakeup_event, },
 		{ "sched:sched_wakeup_new",   timehist_sched_wakeup_event, },
 	};
 	const struct evsel_str_handler migrate_handlers[] = {
@@ -3018,6 +3028,11 @@ static int perf_sched__timehist(struct perf_sched *sched)
 
 	setup_pager();
 
+	/* prefer sched_waking if it is captured */
+	if (perf_evlist__find_tracepoint_by_name(session->evlist,
+						  "sched:sched_waking"))
+		handlers[1].handler = timehist_sched_wakeup_ignore;
+
 	/* setup per-evsel handlers */
 	if (perf_session__set_tracepoints_handlers(session, handlers))
 		goto out;
@@ -3330,12 +3345,16 @@ static int __cmd_record(int argc, const char **argv)
 		"-e", "sched:sched_stat_iowait",
 		"-e", "sched:sched_stat_runtime",
 		"-e", "sched:sched_process_fork",
-		"-e", "sched:sched_wakeup",
 		"-e", "sched:sched_wakeup_new",
 		"-e", "sched:sched_migrate_task",
 	};
+	struct tep_event *waking_event;
 
-	rec_argc = ARRAY_SIZE(record_args) + argc - 1;
+	/*
+	 * +2 for either "-e", "sched:sched_wakeup" or
+	 * "-e", "sched:sched_waking"
+	 */
+	rec_argc = ARRAY_SIZE(record_args) + 2 + argc - 1;
 	rec_argv = calloc(rec_argc + 1, sizeof(char *));
 
 	if (rec_argv == NULL)
@@ -3344,6 +3363,13 @@ static int __cmd_record(int argc, const char **argv)
 	for (i = 0; i < ARRAY_SIZE(record_args); i++)
 		rec_argv[i] = strdup(record_args[i]);
 
+	rec_argv[i++] = "-e";
+	waking_event = trace_event__tp_format("sched", "sched_waking");
+	if (!IS_ERR(waking_event))
+		rec_argv[i++] = strdup("sched:sched_waking");
+	else
+		rec_argv[i++] = strdup("sched:sched_wakeup");
+
 	for (j = 1; j < (unsigned int)argc; j++, i++)
 		rec_argv[i] = argv[j];