From dfe1c6d7efa8ead6878b73216d4c891a28207528 Mon Sep 17 00:00:00 2001 From: Taeung Song Date: Sat, 17 Jun 2017 12:46:42 +0900 Subject: [PATCH] perf config: Refactor the code using 'ret' variable in cmd_config() To simplify the code related to 'ret' variable in cmd_config(), initialize 'ret' with -1 instead of 0 and use goto to perform resource release at the end of the function, setting ret to zero just before the out_err label, as usual in the kernel sources. Signed-off-by: Taeung Song Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1497671202-20495-1-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-config.c | 30 +++++++++++++----------------- 1 file changed, 13 insertions(+), 17 deletions(-) diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c index bb1be79bceda..ece45582a48d 100644 --- a/tools/perf/builtin-config.c +++ b/tools/perf/builtin-config.c @@ -156,7 +156,7 @@ static int parse_config_arg(char *arg, char **var, char **value) int cmd_config(int argc, const char **argv) { - int i, ret = 0; + int i, ret = -1; struct perf_config_set *set; char *user_config = mkpath("%s/.perfconfig", getenv("HOME")); const char *config_filename; @@ -186,10 +186,8 @@ int cmd_config(int argc, const char **argv) * because of reinitializing with options config file location. */ set = perf_config_set__new(); - if (!set) { - ret = -1; + if (!set) goto out_err; - } switch (actions) { case ACTION_LIST: @@ -197,10 +195,11 @@ int cmd_config(int argc, const char **argv) pr_err("Error: takes no arguments\n"); parse_options_usage(config_usage, config_options, "l", 1); } else { - ret = show_config(set); - if (ret < 0) + if (show_config(set) < 0) { pr_err("Nothing configured, " "please check your %s \n", config_filename); + goto out_err; + } } break; default: @@ -215,38 +214,35 @@ int cmd_config(int argc, const char **argv) if (!arg) { pr_err("%s: strdup failed\n", __func__); - ret = -1; - break; + goto out_err; } if (parse_config_arg(arg, &var, &value) < 0) { free(arg); - ret = -1; - break; + goto out_err; } if (value == NULL) { - ret = show_spec_config(set, var); - if (ret < 0) { + if (show_spec_config(set, var) < 0) { pr_err("%s is not configured: %s\n", var, config_filename); free(arg); - break; + goto out_err; } } else { - ret = set_config(set, config_filename, var, value); - if (ret < 0) { + if (set_config(set, config_filename, var, value) < 0) { pr_err("Failed to set '%s=%s' on %s\n", var, value, config_filename); free(arg); - break; + goto out_err; } } free(arg); } } - perf_config_set__delete(set); + ret = 0; out_err: + perf_config_set__delete(set); return ret; } -- 2.20.1