[RFC PATCH 0/1] kernel-shark: Add plugin for handling Xenomai cobalt_context_switch.

[Hongzhan Chen <hongzhan.chen@intel.com>]

For Xenomai-cobalt enabled system, cobalt_switch_context means
that there is context switch in companion core(realtime core),
which we may need to do special treatment and take correct action
as main kernel sched_switch to visualize out-of-band state of
realtime tasks running in cobalt core. To achive our target,
we implement following:

  1. store corresponding cobalt_switch_context events into
     container data.
  2. modify pid stored in entry to be equal to next_pid to
     show correct color in cpu bar when cobalt_switch_context
     event happen.
  3. show blue hollow box to mark out-of-band state underneath
     the baseline of task plots according to cobalt_switch_context
     events.
  4. clickable cobalt_switch_context plugin shapes.

I do not know if this patch can be accepted in upstream from function's
view because it is xenomai related which still be different from
pure kernel-shark for pure linux. But it is still independent plugin
which would not influence other kernel-shark's functions and the plugin
would not take effect if there is no cobalt_switch_context event found
in trace data.


Hongzhan Chen (1):
  kernel-shark: Add plugin for handling Xenomai cobalt_context_switch

 src/libkshark-tepdata.c                    |   1 +
 src/plugins/CMakeLists.txt                 |   4 +
 src/plugins/CobaltSwitchEvents.cpp         | 204 +++++++++++++++++++++
 src/plugins/xenomai_cobalt_switch_events.c | 198 ++++++++++++++++++++
 src/plugins/xenomai_cobalt_switch_events.h |  64 +++++++
 5 files changed, 471 insertions(+)
 create mode 100644 src/plugins/CobaltSwitchEvents.cpp
 create mode 100644 src/plugins/xenomai_cobalt_switch_events.c
 create mode 100644 src/plugins/xenomai_cobalt_switch_events.h

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2.17.1