[PATCH 0/7] ndctl: cxl: add monitor support for trace events

[Dave Jiang <dave.jiang@intel.com>]

This patch series for ndctl implements the monitor command for the cxl tool.
The initial implementation will collect CXL trace events emitted by the
kernel. libtraceevent and libtracefs will be used to parse the trace
event buffer. The monitor will pend on an epoll fd and wait for new event
entries to be posted. The output will be in json format. By default the events
are emitted to stdio, but can also be logged to a file. Each event is converted
to a JSON object and logged as such. All the fields exported are read by the
monitor code and added to the JSON object.

---

Dave Jiang (7):
      ndctl: cxl: add helper function to parse trace event to json object
      ndctl: cxl: add helper to parse through all current events
      ndctl: cxl: add common function to enable event trace
      ndctl: cxl: add common function to disable event trace
      ndctl: cxl: add monitor function for event trace events
      ndctl: cxl: add logging functions for monitor
      ndctl: cxl: add monitor command to cxl


 cxl/builtin.h     |   1 +
 cxl/cxl.c         |   1 +
 cxl/event_trace.c | 236 ++++++++++++++++++++++++++++++++++++++++++++++
 cxl/event_trace.h |  23 +++++
 cxl/meson.build   |   4 +
 cxl/monitor.c     | 235 +++++++++++++++++++++++++++++++++++++++++++++
 meson.build       |   3 +
 7 files changed, 503 insertions(+)
 create mode 100644 cxl/event_trace.c
 create mode 100644 cxl/event_trace.h
 create mode 100644 cxl/monitor.c

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