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
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