tracing: Have the historgram use the result of str_has_prefix() for len of prefix

As str_has_prefix() returns the length on match, we can use that for the
updating of the string pointer instead of recalculating the prefix size.

Cc: Tom Zanussi  <zanussi@kernel.org>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent b6b27355
...@@ -4342,12 +4342,13 @@ static int parse_actions(struct hist_trigger_data *hist_data) ...@@ -4342,12 +4342,13 @@ static int parse_actions(struct hist_trigger_data *hist_data)
unsigned int i; unsigned int i;
int ret = 0; int ret = 0;
char *str; char *str;
int len;
for (i = 0; i < hist_data->attrs->n_actions; i++) { for (i = 0; i < hist_data->attrs->n_actions; i++) {
str = hist_data->attrs->action_str[i]; str = hist_data->attrs->action_str[i];
if (str_has_prefix(str, "onmatch(")) { if ((len = str_has_prefix(str, "onmatch("))) {
char *action_str = str + sizeof("onmatch(") - 1; char *action_str = str + len;
data = onmatch_parse(tr, action_str); data = onmatch_parse(tr, action_str);
if (IS_ERR(data)) { if (IS_ERR(data)) {
...@@ -4355,8 +4356,8 @@ static int parse_actions(struct hist_trigger_data *hist_data) ...@@ -4355,8 +4356,8 @@ static int parse_actions(struct hist_trigger_data *hist_data)
break; break;
} }
data->fn = action_trace; data->fn = action_trace;
} else if (str_has_prefix(str, "onmax(")) { } else if ((len = str_has_prefix(str, "onmax("))) {
char *action_str = str + sizeof("onmax(") - 1; char *action_str = str + len;
data = onmax_parse(action_str); data = onmax_parse(action_str);
if (IS_ERR(data)) { if (IS_ERR(data)) {
......
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