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    Subject[PATCH 05/18] tools lib traceevent: Add retrieval of preempt count and latency flags
    Date
    From: Steven Rostedt <rostedt@goodmis.org>

    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 c1ad1ffa7335..14a4f623c1a5 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 783c842d6517..7aae746ec2fe 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,
    --
    2.7.4
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