perf config: Do not die when parsing u64 or int config values

Just warn the user and ignore those values.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-tbf60nj3ierm6hrkhpothymx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-diff.c

@@ -1302,7 +1302,10 @@ static int diff__config(const char *var, const char *value,
 			void *cb __maybe_unused)
 {
 	if (!strcmp(var, "diff.order")) {
-		sort_compute = perf_config_int(var, value);
+		int ret;
+		if (perf_config_int(&ret, var, value) < 0)
+			return -1;
+		sort_compute = ret;
 		return 0;
 	}
 	if (!strcmp(var, "diff.compute")) {

tools/perf/builtin-report.c

@@ -94,10 +94,9 @@ static int report__config(const char *var, const char *value, void *cb)
 		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
 		return 0;
 	}
-	if (!strcmp(var, "report.queue-size")) {
-		rep->queue_size = perf_config_u64(var, value);
-		return 0;
-	}
+	if (!strcmp(var, "report.queue-size"))
+		return perf_config_u64(&rep->queue_size, var, value);
+
 	if (!strcmp(var, "report.sort_order")) {
 		default_sort_order = strdup(value);
 		return 0;

tools/perf/util/config.c

@@ -335,32 +335,42 @@ static int perf_parse_long(const char *value, long *ret)
 	return 0;
 }
 
-static void die_bad_config(const char *name)
+static void bad_config(const char *name)
 {
 	if (config_file_name)
-		die("bad config value for '%s' in %s", name, config_file_name);
-	die("bad config value for '%s'", name);
+		pr_warning("bad config value for '%s' in %s, ignoring...\n", name, config_file_name);
+	else
+		pr_warning("bad config value for '%s', ignoring...\n", name);
 }
 
-u64 perf_config_u64(const char *name, const char *value)
+int perf_config_u64(u64 *dest, const char *name, const char *value)
 {
 	long long ret = 0;
 
-	if (!perf_parse_llong(value, &ret))
-		die_bad_config(name);
-	return (u64) ret;
+	if (!perf_parse_llong(value, &ret)) {
+		bad_config(name);
+		return -1;
+	}
+
+	*dest = ret;
+	return 0;
 }
 
-int perf_config_int(const char *name, const char *value)
+int perf_config_int(int *dest, const char *name, const char *value)
 {
 	long ret = 0;
-	if (!perf_parse_long(value, &ret))
-		die_bad_config(name);
-	return ret;
+	if (!perf_parse_long(value, &ret)) {
+		bad_config(name);
+		return -1;
+	}
+	*dest = ret;
+	return 0;
 }
 
 static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool)
 {
+	int ret;
+
 	*is_bool = 1;
 	if (!value)
 		return 1;
@@ -371,7 +381,7 @@ static int perf_config_bool_or_int(const char *name, const char *value, int *is_
 	if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off"))
 		return 0;
 	*is_bool = 0;
-	return perf_config_int(name, value);
+	return perf_config_int(&ret, name, value) < 0 ? -1 : ret;
 }
 
 int perf_config_bool(const char *name, const char *value)

tools/perf/util/config.h

@@ -27,8 +27,8 @@ extern const char *config_exclusive_filename;
 typedef int (*config_fn_t)(const char *, const char *, void *);
 int perf_default_config(const char *, const char *, void *);
 int perf_config(config_fn_t fn, void *);
-int perf_config_int(const char *, const char *);
-u64 perf_config_u64(const char *, const char *);
+int perf_config_int(int *dest, const char *, const char *);
+int perf_config_u64(u64 *dest, const char *, const char *);
 int perf_config_bool(const char *, const char *);
 int config_error_nonbool(const char *);
 const char *perf_etc_perfconfig(void);

tools/perf/util/data-convert-bt.c

@@ -1444,10 +1444,8 @@ static int convert__config(const char *var, const char *value, void *cb)
 {
 	struct convert *c = cb;
 
-	if (!strcmp(var, "convert.queue-size")) {
-		c->queue_size = perf_config_u64(var, value);
-		return 0;
-	}
+	if (!strcmp(var, "convert.queue-size"))
+		return perf_config_u64(&c->queue_size, var, value);
 
 	return 0;
 }

tools/perf/util/help-unknown-cmd.c

@@ -12,7 +12,7 @@ static int perf_unknown_cmd_config(const char *var, const char *value,
 				   void *cb __maybe_unused)
 {
 	if (!strcmp(var, "help.autocorrect"))
-		autocorrect = perf_config_int(var,value);
+		return perf_config_int(&autocorrect, var,value);
 
 	return 0;
 }