The new methods can print all unique data fielsd, or only a subset of
the fields of the trace event. The print format is derived from the
parsing tokens (tep_print_parse objects) of the event.
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
src/event-parse.c | 51 +++++++++++++++++++++++++++++++++++++++++++----
src/event-parse.h | 7 +++++++
2 files changed, 54 insertions(+), 4 deletions(-)
diff --git a/src/event-parse.c b/src/event-parse.c
index 51cb30b..8057fb5 100644
--- a/src/event-parse.c
+++ b/src/event-parse.c
@@ -5455,20 +5455,63 @@ void tep_print_field(struct trace_seq *s, void *data,
print_field(s, data, field, NULL);
}
-void tep_print_fields(struct trace_seq *s, void *data,
- int size __maybe_unused, struct tep_event *event)
+static inline void
+print_selected_fields(struct trace_seq *s, void *data,
+ struct tep_event *event,
+ unsigned long long ignore_mask)
{
struct tep_print_parse *parse = event->print_fmt.print_cache;
struct tep_format_field *field;
+ unsigned long long field_mask = 1;
field = event->format.fields;
- while (field) {
+ for(; field; field = field->next, field_mask <<= 1) {
+ if (field_mask & ignore_mask)
+ continue;
+
trace_seq_printf(s, " %s=", field->name);
print_field(s, data, field, &parse);
- field = field->next;
}
}
+void tep_print_fields(struct trace_seq *s, void *data,
+ int size __maybe_unused, struct tep_event *event)
+{
+ print_selected_fields(s, data, event, 0);
+}
+
+/**
+ * tep_record_print_fields - print the field name followed by the
+ * record's field value.
+ * @s: The seq to print to
+ * @record: The record to get the event from
+ * @event: The event that the field is for
+ */
+void tep_record_print_fields(struct trace_seq *s,
+ struct tep_record *record,
+ struct tep_event *event)
+{
+ print_selected_fields(s, record->data, event, 0);
+}
+
+/**
+ * tep_record_print_selected_fields - print the field name followed by the
+ * record's field value for a selected subset of record fields.
+ * @s: The seq to print to
+ * @record: The record to get the event from
+ * @event: The event that the field is for
+ * @select_mask: Bit mask defining the fields to print
+ */
+void tep_record_print_selected_fields(struct trace_seq *s,
+ struct tep_record *record,
+ struct tep_event *event,
+ unsigned long long select_mask)
+{
+ unsigned long long ignore_mask = ~select_mask;
+
+ print_selected_fields(s, record->data, event, ignore_mask);
+}
+
static int print_function(struct trace_seq *s, const char *format,
void *data, int size, struct tep_event *event,
struct tep_print_arg *arg)
diff --git a/src/event-parse.h b/src/event-parse.h
index d4a876f..0833893 100644
--- a/src/event-parse.h
+++ b/src/event-parse.h
@@ -545,6 +545,13 @@ int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline);
void tep_print_field(struct trace_seq *s, void *data,
struct tep_format_field *field);
+void tep_record_print_fields(struct trace_seq *s,
+ struct tep_record *record,
+ struct tep_event *event);
+void tep_record_print_selected_fields(struct trace_seq *s,
+ struct tep_record *record,
+ struct tep_event *event,
+ unsigned long long select_mask);
void tep_print_fields(struct trace_seq *s, void *data,
int size __maybe_unused, struct tep_event *event);
int tep_strerror(struct tep_handle *tep, enum tep_errno errnum,
--
2.30.2
|