run-command API: move *_tr2() users to "run_processes_parallel()"

Have the users of the "run_processes_parallel_tr2()" function use
"run_processes_parallel()" instead. In preceding commits the latter
was refactored to take a "struct run_process_parallel_opts" argument,
since the only reason for "run_processes_parallel_tr2()" to exist was
to take arguments that are now a part of that struct we can do away
with it.

See ee4512ed48 (trace2: create new combined trace facility,
2019-02-22) for the addition of the "*_tr2()" variant of the function,
it was used by every caller except "t/helper/test-run-command.c"..

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/fetch.c

@@ -1953,15 +1953,21 @@ static int fetch_multiple(struct string_list *list, int max_children)
 
 	if (max_children != 1 && list->nr != 1) {
 		struct parallel_fetch_state state = { argv.v, list, 0, 0 };
+		const struct run_process_parallel_opts opts = {
+			.tr2_category = "fetch",
+			.tr2_label = "parallel/fetch",
+
+			.processes = max_children,
+
+			.get_next_task = &fetch_next_remote,
+			.start_failure = &fetch_failed_to_start,
+			.task_finished = &fetch_finished,
+			.data = &state,
+		};
 
 		strvec_push(&argv, "--end-of-options");
-		run_processes_parallel_tr2(max_children,
-					   &fetch_next_remote,
-					   &fetch_failed_to_start,
-					   &fetch_finished,
-					   &state,
-					   "fetch", "parallel/fetch");
 
+		run_processes_parallel(&opts);
 		result = state.result;
 	} else
 		for (i = 0; i < list->nr; i++) {

builtin/submodule--helper.c

@@ -2567,12 +2567,20 @@ static int update_submodules(struct update_data *update_data)
 {
 	int i, ret = 0;
 	struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
+	const struct run_process_parallel_opts opts = {
+		.tr2_category = "submodule",
+		.tr2_label = "parallel/update",
+
+		.processes = update_data->max_jobs,
+
+		.get_next_task = update_clone_get_next_task,
+		.start_failure = update_clone_start_failure,
+		.task_finished = update_clone_task_finished,
+		.data = &suc,
+	};
 
 	suc.update_data = update_data;
-	run_processes_parallel_tr2(suc.update_data->max_jobs, update_clone_get_next_task,
+	run_processes_parallel(&opts);
-				   update_clone_start_failure,
-				   update_clone_task_finished, &suc, "submodule",
-				   "parallel/update");
 
 	/*
 	 * We saved the output and put it out all at once now.

run-command.c

@@ -1827,24 +1827,6 @@ void run_processes_parallel(const struct run_process_parallel_opts *opts)
 		trace2_region_leave(tr2_category, tr2_label, NULL);
 }
 
-void run_processes_parallel_tr2(size_t processes, get_next_task_fn get_next_task,
-				start_failure_fn start_failure,
-				task_finished_fn task_finished, void *pp_cb,
-				const char *tr2_category, const char *tr2_label)
-{
-	const struct run_process_parallel_opts opts = {
-		.tr2_category = tr2_category,
-		.tr2_label = tr2_label,
-		.processes = processes,
-
-		.get_next_task = get_next_task,
-		.start_failure = start_failure,
-		.task_finished = task_finished,
-	};
-
-	run_processes_parallel(&opts);
-}
-
 int run_auto_maintenance(int quiet)
 {
 	int enabled;

run-command.h

@@ -528,9 +528,6 @@ struct run_process_parallel_opts
  * conditions due to writing in parallel to stdout and stderr.
  */
 void run_processes_parallel(const struct run_process_parallel_opts *opts);
-void run_processes_parallel_tr2(size_t processes, get_next_task_fn,
-				start_failure_fn, task_finished_fn, void *pp_cb,
-				const char *tr2_category, const char *tr2_label);
 
 /**
  * Convenience function which prepares env for a command to be run in a

submodule.c

@@ -1819,6 +1819,17 @@ int fetch_submodules(struct repository *r,
 {
 	int i;
 	struct submodule_parallel_fetch spf = SPF_INIT;
+	const struct run_process_parallel_opts opts = {
+		.tr2_category = "submodule",
+		.tr2_label = "parallel/fetch",
+
+		.processes = max_parallel_jobs,
+
+		.get_next_task = get_next_submodule,
+		.start_failure = fetch_start_failure,
+		.task_finished = fetch_finish,
+		.data = &spf,
+	};
 
 	spf.r = r;
 	spf.command_line_option = command_line_option;
@@ -1840,12 +1851,7 @@ int fetch_submodules(struct repository *r,
 
 	calculate_changed_submodule_paths(r, &spf.changed_submodule_names);
 	string_list_sort(&spf.changed_submodule_names);
-	run_processes_parallel_tr2(max_parallel_jobs,
+	run_processes_parallel(&opts);
-				   get_next_submodule,
-				   fetch_start_failure,
-				   fetch_finish,
-				   &spf,
-				   "submodule", "parallel/fetch");
 
 	if (spf.submodules_with_errors.len > 0)
 		fprintf(stderr, _("Errors during submodule fetch:\n%s"),