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verification/dot2k: Add support for nested monitors

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RV now supports nested monitors, this functionality requires a container
monitor, which has virtually no functionality besides holding other
monitors, and nested monitors, that have a container as parent.

Add the -p flag to pass a parent to a monitor, this sets it up while
registering the monitor and adds necessary includes and configurations.
Add the -c flag to create a container, since containers are empty, we
don't allow supplying a dot model or a monitor type, the template is
also different since functions to enable and disable the monitor are not
defined, nor any tracepoint. The generated header file only allows to
include the rv_monitor structure in children monitors.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Link: https://lore.kernel.org/20250305140406.350227-8-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Gabriele Monaco
2025-03-05 15:04:00 +01:00
committed by Steven Rostedt (Google)
parent eba321a16f
commit 2334cf7d09
6 changed files with 124 additions and 26 deletions
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27
tools/verification/dot2/dot2k
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@@ -11,22 +11,30 @@
if __name__ == '__main__':
from dot2.dot2k import dot2k
import argparse
import ntpath
import os
import platform
import sys
def is_container():
"""Should work even before parsing the arguments"""
return "-c" in sys.argv or "--container" in sys.argv
parser = argparse.ArgumentParser(description='transform .dot file into kernel rv monitor')
parser.add_argument('-d', "--dot", dest="dot_file", required=True)
parser.add_argument('-t', "--monitor_type", dest="monitor_type", required=True)
parser.add_argument('-n', "--model_name", dest="model_name", required=False)
parser.add_argument('-d', "--dot", dest="dot_file", required=not is_container())
parser.add_argument('-t', "--monitor_type", dest="monitor_type", required=not is_container(),
help=f"Available options: {', '.join(dot2k.monitor_types.keys())}")
parser.add_argument('-n', "--model_name", dest="model_name", required=is_container())
parser.add_argument("-D", "--description", dest="description", required=False)
parser.add_argument("-a", "--auto_patch", dest="auto_patch",
action="store_true", required=False,
help="Patch the kernel in place")
parser.add_argument("-p", "--parent", dest="parent",
required=False, help="Create a monitor nested to parent")
parser.add_argument("-c", "--container", dest="container",
action="store_true", required=False,
help="Create an empty monitor to be used as a container")
params = parser.parse_args()
print("Opening and parsing the dot file %s" % params.dot_file)
if not is_container():
print("Opening and parsing the dot file %s" % params.dot_file)
try:
monitor=dot2k(params.dot_file, params.monitor_type, vars(params))
except Exception as e:
@@ -37,8 +45,9 @@ if __name__ == '__main__':
print("Writing the monitor into the directory %s" % monitor.name)
monitor.print_files()
print("Almost done, checklist")
print(" - Edit the %s/%s.c to add the instrumentation" % (monitor.name, monitor.name))
print(monitor.fill_tracepoint_tooltip())
if not is_container():
print(" - Edit the %s/%s.c to add the instrumentation" % (monitor.name, monitor.name))
print(monitor.fill_tracepoint_tooltip())
print(monitor.fill_makefile_tooltip())
print(monitor.fill_kconfig_tooltip())
print(monitor.fill_monitor_tooltip())