perf_counter tools: Uniform help printouts

Also add perf list to command-list.txt.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Documentation/perf_counter/builtin-help.c

@@ -284,7 +284,7 @@ void list_common_cmds_help(void)
 			longest = strlen(common_cmds[i].name);
 	}
 
-	puts("The most commonly used perf commands are:");
+	puts(" The most commonly used perf commands are:");
 	for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
 		printf("   %s   ", common_cmds[i].name);
 		mput_char(' ', longest - strlen(common_cmds[i].name));
@@ -426,16 +426,16 @@ int cmd_help(int argc, const char **argv, const char *prefix)
 			builtin_help_usage, 0);
 
 	if (show_all) {
-		printf("usage: %s\n\n", perf_usage_string);
+		printf("\n usage: %s\n\n", perf_usage_string);
 		list_commands("perf commands", &main_cmds, &other_cmds);
-		printf("%s\n", perf_more_info_string);
+		printf(" %s\n\n", perf_more_info_string);
 		return 0;
 	}
 
 	if (!argv[0]) {
-		printf("usage: %s\n\n", perf_usage_string);
+		printf("\n usage: %s\n\n", perf_usage_string);
 		list_common_cmds_help();
-		printf("\n%s\n", perf_more_info_string);
+		printf("\n %s\n\n", perf_more_info_string);
 		return 0;
 	}
 

Documentation/perf_counter/command-list.txt

+#
 # List of known perf commands.
 # command name			category [deprecated] [common]
+#
 perf-record			mainporcelain common
 perf-report			mainporcelain common
 perf-stat			mainporcelain common
 perf-top			mainporcelain common
-
+perf-list			mainporcelain common

Documentation/perf_counter/perf.c

@@ -384,9 +384,9 @@ int main(int argc, const char **argv)
 			argv[0] += 2;
 	} else {
 		/* The user didn't specify a command; give them help */
-		printf("usage: %s\n\n", perf_usage_string);
+		printf("\n usage: %s\n\n", perf_usage_string);
 		list_common_cmds_help();
-		printf("\n%s\n", perf_more_info_string);
+		printf("\n %s\n\n", perf_more_info_string);
 		exit(1);
 	}
 	cmd = argv[0];

Documentation/perf_counter/util/parse-options.c

@@ -385,7 +385,7 @@ int usage_with_options_internal(const char * const *usagestr,
 	if (!usagestr)
 		return PARSE_OPT_HELP;
 
-	fprintf(stderr, "usage: %s\n", *usagestr++);
+	fprintf(stderr, "\n usage: %s\n", *usagestr++);
 	while (*usagestr && **usagestr)
 		fprintf(stderr, "   or: %s\n", *usagestr++);
 	while (*usagestr) {

Documentation/perf_counter/util/usage.c

@@ -14,7 +14,7 @@ static void report(const char *prefix, const char *err, va_list params)
 
 static NORETURN void usage_builtin(const char *err)
 {
-	fprintf(stderr, "usage: %s\n", err);
+	fprintf(stderr, "\n usage: %s\n", err);
 	exit(129);
 }