@@ -321,6 +321,8 @@ enum tep_flag {
TEP_NSEC_OUTPUT = 1, /* output in NSECS */
TEP_DISABLE_SYS_PLUGINS = 1 << 1,
TEP_DISABLE_PLUGINS = 1 << 2,
+ TEP_NO_PARSING_WARNINGS = 1 << 3, /* Disable warnings while parsing
+ event's format strings */
};
#define TEP_ERRORS \
@@ -6222,6 +6222,7 @@ enum tep_errno __tep_parse_format(struct tep_event **eventp,
struct tep_handle *tep, const char *buf,
unsigned long size, const char *sys)
{
+ int show_warning_state = show_warning;
struct tep_event *event;
int ret;
@@ -6274,11 +6275,12 @@ enum tep_errno __tep_parse_format(struct tep_event **eventp,
* If the event has an override, don't print warnings if the event
* print format fails to parse.
*/
- if (tep && find_event_handle(tep, event))
+ if (tep && (tep_test_flag(tep, TEP_NO_PARSING_WARNINGS) ||
+ find_event_handle(tep, event)))
show_warning = 0;
ret = event_read_print(event);
- show_warning = 1;
+ show_warning = show_warning_state;
if (ret < 0) {
ret = TEP_ERRNO__READ_PRINT_FAILED;
When the event's format strings are parsed by tep_parse_format() API and there is a parsing error, a warning is printed. There are use cases when these errors are not important and should be suppressed. A new flag is added to enum tep_flag { ... TEP_NO_PARSING_WARNINGS ... } for such use cases. It can be set / cleared / checked using the existing libtraceevent APIs: void tep_set_flag(struct tep_handle *tep, int flag); void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag); bool tep_test_flag(struct tep_handle *tep, enum tep_flag flag); Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> --- include/traceevent/event-parse.h | 2 ++ lib/traceevent/event-parse.c | 6 ++++-- 2 files changed, 6 insertions(+), 2 deletions(-)