598 static int errpos(char *str)  in errpos()  argument
600 	return err_pos(last_cmd, str);  in errpos()
603 static void last_cmd_set(struct trace_event_file *file, char *str)  in last_cmd_set()  argument
608 	if (!str)  in last_cmd_set()
611 	strncpy(last_cmd, str, MAX_FILTER_STR_VAL - 1);  in last_cmd_set()
2033 static int parse_map_size(char *str)  in parse_map_size()  argument
2038 	strsep(&str, "=");  in parse_map_size()
2039 	if (!str) {  in parse_map_size()
2044 	ret = kstrtoul(str, 0, &size);  in parse_map_size()
2079 static int parse_action(char *str, struct hist_trigger_attrs *attrs)  in parse_action()  argument
2086 	if ((str_has_prefix(str, "onmatch(")) ||  in parse_action()
2087 	    (str_has_prefix(str, "onmax(")) ||  in parse_action()
2088 	    (str_has_prefix(str, "onchange("))) {  in parse_action()
2089 		attrs->action_str[attrs->n_actions] = kstrdup(str, GFP_KERNEL);  in parse_action()
2101 			    char *str, struct hist_trigger_attrs *attrs)  in parse_assignment()  argument
2105 	if ((str_has_prefix(str, "key=")) ||  in parse_assignment()
2106 	    (str_has_prefix(str, "keys="))) {  in parse_assignment()
2107 		attrs->keys_str = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2112 	} else if ((str_has_prefix(str, "val=")) ||  in parse_assignment()
2113 		   (str_has_prefix(str, "vals=")) ||  in parse_assignment()
2114 		   (str_has_prefix(str, "values="))) {  in parse_assignment()
2115 		attrs->vals_str = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2120 	} else if (str_has_prefix(str, "sort=")) {  in parse_assignment()
2121 		attrs->sort_key_str = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2126 	} else if (str_has_prefix(str, "name=")) {  in parse_assignment()
2127 		attrs->name = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2132 	} else if (str_has_prefix(str, "clock=")) {  in parse_assignment()
2133 		strsep(&str, "=");  in parse_assignment()
2134 		if (!str) {  in parse_assignment()
2139 		str = strstrip(str);  in parse_assignment()
2140 		attrs->clock = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2145 	} else if (str_has_prefix(str, "size=")) {  in parse_assignment()
2146 		int map_bits = parse_map_size(str);  in parse_assignment()
2157 			hist_err(tr, HIST_ERR_TOO_MANY_VARS, errpos(str));  in parse_assignment()
2162 		assignment = kstrdup(str, GFP_KERNEL);  in parse_assignment()
2185 		char *str = strsep(&trigger_str, ":");  in parse_hist_trigger_attrs()  local
2187 		if (strchr(str, '=')) {  in parse_hist_trigger_attrs()
2188 			ret = parse_assignment(tr, str, attrs);  in parse_hist_trigger_attrs()
2191 		} else if (strcmp(str, "pause") == 0)  in parse_hist_trigger_attrs()
2193 		else if ((strcmp(str, "cont") == 0) ||  in parse_hist_trigger_attrs()
2194 			 (strcmp(str, "continue") == 0))  in parse_hist_trigger_attrs()
2196 		else if (strcmp(str, "clear") == 0)  in parse_hist_trigger_attrs()
2199 			ret = parse_action(str, attrs);  in parse_hist_trigger_attrs()
2405 static int contains_operator(char *str)  in contains_operator()  argument
2410 	op = strpbrk(str, "+-");  in contains_operator()
2416 		if (*str == '-')  in contains_operator()
2788 	char *field_name, *modifier, *str;  in parse_field()  local
2791 	modifier = str = kstrdup(field_str, GFP_KERNEL);  in parse_field()
2835 	kfree(str);  in parse_field()
2865 				     struct trace_event_file *file, char *str,  in parse_atom()  argument
2868 	char *s, *ref_system = NULL, *ref_event = NULL, *ref_var = str;  in parse_atom()
2873 	s = strchr(str, '.');  in parse_atom()
2877 			ref_system = strsep(&str, ".");  in parse_atom()
2878 			if (!str) {  in parse_atom()
2882 			ref_event = strsep(&str, ".");  in parse_atom()
2883 			if (!str) {  in parse_atom()
2887 			ref_var = str;  in parse_atom()
2906 		str = s;  in parse_atom()
2908 	field = parse_field(hist_data, file, str, flags);  in parse_atom()
2927 				     char *str, unsigned long flags,
2932 				      char *str, unsigned long flags,  in parse_unary()  argument
2943 		hist_err(file->tr, HIST_ERR_TOO_MANY_SUBEXPR, errpos(str));  in parse_unary()
2948 	str++; /* skip leading '-' */  in parse_unary()
2950 	s = strchr(str, '(');  in parse_unary()
2952 		str++;  in parse_unary()
2958 	s = strrchr(str, ')');  in parse_unary()
2974 	operand1 = parse_expr(hist_data, file, str, operand_flags, NULL, ++level);  in parse_unary()
3036 				     char *str, unsigned long flags,  in parse_expr()  argument
3045 		hist_err(file->tr, HIST_ERR_TOO_MANY_SUBEXPR, errpos(str));  in parse_expr()
3049 	field_op = contains_operator(str);  in parse_expr()
3052 		return parse_atom(hist_data, file, str, &flags, var_name);  in parse_expr()
3055 		return parse_unary(hist_data, file, str, flags, var_name, ++level);  in parse_expr()
3068 	operand1_str = strsep(&str, sep);  in parse_expr()
3069 	if (!operand1_str || !str)  in parse_expr()
3083 	operand2 = parse_expr(hist_data, file, str, operand_flags, NULL, ++level);  in parse_expr()
3438 			char *str = elt_data->field_var_str[j++];  in __update_field_vars()  local
3441 			strscpy(str, val_str, STR_VAR_LEN_MAX);  in __update_field_vars()
3442 			var_val = (u64)(uintptr_t)str;  in __update_field_vars()
3956 static int action_parse(struct trace_array *tr, char *str, struct action_data *data,  in action_parse()  argument
3962 	strsep(&str, ".");  in action_parse()
3963 	if (!str) {  in action_parse()
3969 	action_name = strsep(&str, "(");  in action_parse()
3970 	if (!action_name || !str) {  in action_parse()
3977 		char *params = strsep(&str, ")");  in action_parse()
4003 		char *params = strsep(&str, ")");  in action_parse()
4005 		if (!str) {  in action_parse()
4025 		char *params = strsep(&str, ")");  in action_parse()
4062 					    char *str, enum handler_id handler)  in track_data_parse()  argument
4072 	var_str = strsep(&str, ")");  in track_data_parse()
4073 	if (!var_str || !str) {  in track_data_parse()
4084 	ret = action_parse(hist_data->event_file->tr, str, data, handler);  in track_data_parse()
4397 static struct action_data *onmatch_parse(struct trace_array *tr, char *str)  in onmatch_parse()  argument
4407 	match_event = strsep(&str, ")");  in onmatch_parse()
4408 	if (!match_event || !str) {  in onmatch_parse()
4436 	ret = action_parse(tr, str, data, HANDLER_ONMATCH);  in onmatch_parse()
4695 	char *s, *str, *var_name, *field_str;  in parse_var_defs()  local
4700 		str = hist_data->attrs->assignment_str[i];  in parse_var_defs()
4702 			field_str = strsep(&str, ",");  in parse_var_defs()
4772 static int is_descending(const char *str)  in is_descending()  argument
4774 	if (!str)  in is_descending()
4777 	if (strcmp(str, "descending") == 0)  in is_descending()
4780 	if (strcmp(str, "ascending") == 0)  in is_descending()
4895 	char *str;  in parse_actions()  local
4899 		str = hist_data->attrs->action_str[i];  in parse_actions()
4901 		if ((len = str_has_prefix(str, "onmatch("))) {  in parse_actions()
4902 			char *action_str = str + len;  in parse_actions()
4909 		} else if ((len = str_has_prefix(str, "onmax("))) {  in parse_actions()
4910 			char *action_str = str + len;  in parse_actions()
4918 		} else if ((len = str_has_prefix(str, "onchange("))) {  in parse_actions()
4919 			char *action_str = str + len;  in parse_actions()
5370 	char str[KSYM_SYMBOL_LEN];  in hist_trigger_stacktrace_print()  local
5379 		sprint_symbol(str, stacktrace_entries[i]);  in hist_trigger_stacktrace_print()
5380 		seq_printf(m, "%s\n", str);  in hist_trigger_stacktrace_print()
5390 	char str[KSYM_SYMBOL_LEN];  in hist_trigger_print_key()  local
5411 			sprint_symbol_no_offset(str, uval);  in hist_trigger_print_key()
5413 				   uval, str);  in hist_trigger_print_key()
5416 			sprint_symbol(str, uval);  in hist_trigger_print_key()
5418 				   uval, str);  in hist_trigger_print_key()