[PATCH V3 0/3] trace-cmd: Support a raw format for outputting timestamp

[Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>]

Hi Steven,

This patch series extracts the trace_clock file for switching outputting format 
of timestamp. This patch series uses the options feature, so trace-cmd keeps
backward compatibility.

In tsc or counter modes, trace-cmd should output timestamp not in the sec.usec
format but in the raw format. For example, we will show results in trace-cmd
report mode as follows by applying this patch series:

<for local or global mode>
            bash-9022  [000] 34984.109846: sched_wakeup:         comm=migration/3 pid=23 prio=0 success=1 target_cpu=003
          <idle>-0     [002] 34984.109847: cpu_idle:             state=4294967295 cpu_id=2
            bash-9022  [000] 34984.109848: sched_switch:         prev_comm=bash prev_pid=9022 prev_prio=120 prev_state=R ==> next_comm=migration/0 next_pid=8 next_prio=0
          <idle>-0     [002] 34984.109849: sched_switch:         prev_comm=swapper/2 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=migration/2 next_pid=18 next_prio=0

<for tsc or counter mode>
            bash-9022  [000] 34984109846: sched_wakeup:         comm=migration/3 pid=23 prio=0 success=1 target_cpu=003
          <idle>-0     [002] 34984109847: cpu_idle:             state=4294967295 cpu_id=2
            bash-9022  [000] 34984109848: sched_switch:         prev_comm=bash prev_pid=9022 prev_prio=120 prev_state=R ==> next_comm=migration/0 next_pid=8 next_prio=0
          <idle>-0     [002] 34984109849: sched_switch:         prev_comm=swapper/2 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=migration/2 next_pid=18 next_prio=0

v2:
 - Separate input/output patches (2/3 and 3/3)
 - Define TRACECMD_OPTION_TRACECLOCK for extracting trace_clock (2/3)
 - Check whether TRACECMD_OPTION_TRACECLOCK exists or not in trace.dat (3/3)

v3:
 - a file variable in save_tracing_file_data() is freed when operation is failed
   (1/3)
 - check the return value of get_tracing_file() in save_tracing_file_data()
   (1/3)

Thank you,

---

Yoshihiro YUNOMAE (3):
      trace-cmd: Define general functions for outputting/inputting saved_cmdlines
      trace-cmd: Add recording to trace_clock
      trace-cmd: Add support for extracting trace_clock in report


 event-parse.c  |   50 ++++++++++++++++++++++++++++-------
 event-parse.h  |    6 ++++
 trace-cmd.h    |    3 ++
 trace-input.c  |   79 ++++++++++++++++++++++++++++++++++++++++++++++----------
 trace-output.c |   71 +++++++++++++++++++++++++++++++-------------------
 trace-read.c   |    4 ++-
 trace-record.c |    3 ++
 trace-util.c   |   26 ++++++++++++++++++
 8 files changed, 188 insertions(+), 54 deletions(-)

-- 
Yoshihiro YUNOMAE
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: yoshihiro.yunomae.ez@hitachi.com