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

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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>
This commit is contained in:
Steven Rostedt 2016-11-22 11:31:58 -05:00 committed by Arnaldo Carvalho de Melo
parent bb5a7316b9
commit c52d9e4e67
2 changed files with 30 additions and 2 deletions
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30
tools/lib/traceevent/event-parse.c
View file

@ -5192,17 +5192,43 @@ 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)
{
return parse_common_pid(pevent, rec->data);
}
/**
* 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

2
tools/lib/traceevent/event-parse.h
View file

@ -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,