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Subject[tip:perf/core] tools lib traceevent: Add retrieval of preempt count and latency flags
Commit-ID:  c52d9e4e677b0407fe553e9211802e2505a2f244
Gitweb: http://git.kernel.org/tip/c52d9e4e677b0407fe553e9211802e2505a2f244
Author: Steven Rostedt <rostedt@goodmis.org>
AuthorDate: Tue, 22 Nov 2016 11:31:58 -0500
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 23 Nov 2016 10:44:03 -0300

tools lib traceevent: Add retrieval of preempt count and latency flags

Add a way to retrieve the preempt count as well as the latency flags from a
pevent_record.

int pevent_data_preempt_count(pevent, record);

returns the preempt count of a record.

int pevent_data_flags(pevent, record);

returns the latency flags for a record.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20161122113158.03a010a8@gandalf.local.home
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/lib/traceevent/event-parse.c | 30 ++++++++++++++++++++++++++++--
tools/lib/traceevent/event-parse.h | 2 ++
2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index c1ad1ff..14a4f62 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5192,11 +5192,11 @@ struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type
}

/**
- * pevent_data_pid - parse the PID from raw data
+ * pevent_data_pid - parse the PID from record
* @pevent: a handle to the pevent
* @rec: the record to parse
*
- * This returns the PID from a raw data.
+ * This returns the PID from a record.
*/
int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec)
{
@@ -5204,6 +5204,32 @@ int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec)
}

/**
+ * pevent_data_prempt_count - parse the preempt count from the record
+ * @pevent: a handle to the pevent
+ * @rec: the record to parse
+ *
+ * This returns the preempt count from a record.
+ */
+int pevent_data_prempt_count(struct pevent *pevent, struct pevent_record *rec)
+{
+ return parse_common_pc(pevent, rec->data);
+}
+
+/**
+ * pevent_data_flags - parse the latency flags from the record
+ * @pevent: a handle to the pevent
+ * @rec: the record to parse
+ *
+ * This returns the latency flags from a record.
+ *
+ * Use trace_flag_type enum for the flags (see event-parse.h).
+ */
+int pevent_data_flags(struct pevent *pevent, struct pevent_record *rec)
+{
+ return parse_common_flags(pevent, rec->data);
+}
+
+/**
* pevent_data_comm_from_pid - return the command line from PID
* @pevent: a handle to the pevent
* @pid: the PID of the task to search for
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 783c842..7aae746 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -709,6 +709,8 @@ void pevent_data_lat_fmt(struct pevent *pevent,
int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
+int pevent_data_prempt_count(struct pevent *pevent, struct pevent_record *rec);
+int pevent_data_flags(struct pevent *pevent, struct pevent_record *rec);
const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
struct cmdline;
struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *comm,
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