Merge tag 'perf-core-for-mingo-4.12-20170503' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

Fixes:

- Support setting probes in versioned user space symbols, such as
  pthread_create@@GLIBC_2.1, picking the default one, more work
  needed to make it possible to set it on the other versions, as
  the 'perf probe' syntax already uses @ for other purposes.
  (Paul Clarke)

- Do not special case address zero as an error for routines that
  return addresses (symbol lookup), instead use the return as the
  success/error indication and pass a pointer to return the address,
  fixing 'perf test vmlinux' (the one that compares address between
  vmlinux and kallsyms) on s/390, where the '_text' address is equal
  to zero (Arnaldo Carvalho de Melo)

Infrastructure changes:

- More header sanitization, moving stuff out of util.h into
  more appropriate headers and objects and sometimes creating
  new ones (Arnaldo Carvalho de Melo)

- Refactor a duplicated code for obtaining config file name (Taeung Song)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 9 insertions, 12 deletions

diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c
index 8c0d93b7c2f03..80668fa7556ef 100644
--- a/tools/perf/builtin-config.c
+++ b/tools/perf/builtin-config.c
@@ -154,11 +154,12 @@ static int parse_config_arg(char *arg, char **var, char **value)
 	return 0;
 }
 
-int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
+int cmd_config(int argc, const char **argv)
 {
 	int i, ret = 0;
 	struct perf_config_set *set;
 	char *user_config = mkpath("%s/.perfconfig", getenv("HOME"));
+	const char *config_filename;
 
 	argc = parse_options(argc, argv, config_options, config_usage,
 			     PARSE_OPT_STOP_AT_NON_OPTION);
@@ -175,6 +176,11 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
 	else if (use_user_config)
 		config_exclusive_filename = user_config;
 
+	if (!config_exclusive_filename)
+		config_filename = user_config;
+	else
+		config_filename = config_exclusive_filename;
+
 	/*
 	 * At only 'config' sub-command, individually use the config set
 	 * because of reinitializing with options config file location.
@@ -192,13 +198,9 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
 			parse_options_usage(config_usage, config_options, "l", 1);
 		} else {
 			ret = show_config(set);
-			if (ret < 0) {
-				const char * config_filename = config_exclusive_filename;
-				if (!config_exclusive_filename)
-					config_filename = user_config;
+			if (ret < 0)
 				pr_err("Nothing configured, "
 				       "please check your %s \n", config_filename);
-			}
 		}
 		break;
 	default:
@@ -221,13 +223,8 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
 
 				if (value == NULL)
 					ret = show_spec_config(set, var);
-				else {
-					const char *config_filename = config_exclusive_filename;
-
-					if (!config_exclusive_filename)
-						config_filename = user_config;
+				else
 					ret = set_config(set, config_filename, var, value);
-				}
 				free(arg);
 			}
 		} else