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Message-Id: <6e6451079975bdd6242a285c5225cb485e246464.1658778484.git.bristot@kernel.org>
Date: Mon, 25 Jul 2022 22:11:21 +0200
From: Daniel Bristot de Oliveira <bristot@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Daniel Bristot de Oliveira <bristot@...nel.org>,
Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>,
Jonathan Corbet <corbet@....net>,
Ingo Molnar <mingo@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>,
Peter Zijlstra <peterz@...radead.org>,
Will Deacon <will@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Marco Elver <elver@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
"Paul E. McKenney" <paulmck@...nel.org>,
Shuah Khan <skhan@...uxfoundation.org>,
Gabriele Paoloni <gpaoloni@...hat.com>,
Juri Lelli <juri.lelli@...hat.com>,
Clark Williams <williams@...hat.com>,
Tao Zhou <tao.zhou@...ux.dev>,
Randy Dunlap <rdunlap@...radead.org>,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-trace-devel@...r.kernel.org
Subject: [PATCH V7 09/16] tools/rv: Add dot2k
transform .dot file into kernel rv monitor
usage: dot2k [-h] -d DOT_FILE -t MONITOR_TYPE [-n MODEL_NAME] [-D DESCRIPTION]
optional arguments:
-h, --help show this help message and exit
-d DOT_FILE, --dot DOT_FILE
-t MONITOR_TYPE, --monitor_type MONITOR_TYPE
-n MODEL_NAME, --model_name MODEL_NAME
-D DESCRIPTION, --description DESCRIPTION
Cc: Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: Jonathan Corbet <corbet@....net>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Will Deacon <will@...nel.org>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Marco Elver <elver@...gle.com>
Cc: Dmitry Vyukov <dvyukov@...gle.com>
Cc: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Shuah Khan <skhan@...uxfoundation.org>
Cc: Gabriele Paoloni <gpaoloni@...hat.com>
Cc: Juri Lelli <juri.lelli@...hat.com>
Cc: Clark Williams <williams@...hat.com>
Cc: Tao Zhou <tao.zhou@...ux.dev>
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: linux-doc@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-trace-devel@...r.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@...nel.org>
---
tools/verification/dot2/Makefile | 5 +
tools/verification/dot2/dot2k | 44 +++++
tools/verification/dot2/dot2k.py | 174 ++++++++++++++++++
.../dot2/dot2k_templates/main_global.c | 91 +++++++++
.../dot2/dot2k_templates/main_per_cpu.c | 91 +++++++++
.../dot2/dot2k_templates/main_per_task.c | 91 +++++++++
6 files changed, 496 insertions(+)
create mode 100644 tools/verification/dot2/dot2k
create mode 100644 tools/verification/dot2/dot2k.py
create mode 100644 tools/verification/dot2/dot2k_templates/main_global.c
create mode 100644 tools/verification/dot2/dot2k_templates/main_per_cpu.c
create mode 100644 tools/verification/dot2/dot2k_templates/main_per_task.c
diff --git a/tools/verification/dot2/Makefile b/tools/verification/dot2/Makefile
index 235d182f6b2c..021beb07a521 100644
--- a/tools/verification/dot2/Makefile
+++ b/tools/verification/dot2/Makefile
@@ -19,3 +19,8 @@ install:
$(INSTALL) automata.py -D -m 644 $(DESTDIR)$(PYLIB)/dot2/automata.py
$(INSTALL) dot2c.py -D -m 644 $(DESTDIR)$(PYLIB)/dot2/dot2c.py
$(INSTALL) dot2c -D -m 755 $(DESTDIR)$(bindir)/
+ $(INSTALL) dot2k.py -D -m 644 $(DESTDIR)$(PYLIB)/dot2/dot2k.py
+ $(INSTALL) dot2k -D -m 755 $(DESTDIR)$(bindir)/
+
+ mkdir -p ${miscdir}/
+ cp -rp dot2k_templates $(DESTDIR)$(miscdir)/
diff --git a/tools/verification/dot2/dot2k b/tools/verification/dot2/dot2k
new file mode 100644
index 000000000000..69106f4b7682
--- /dev/null
+++ b/tools/verification/dot2/dot2k
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@...nel.org>
+#
+# dot2k: transform dot files into a monitor for the Linux kernel.
+
+if __name__ == '__main__':
+ from dot2.dot2k import dot2k
+ import argparse
+ import ntpath
+ import os
+ import platform
+ import sys
+ import sys
+ import argparse
+
+ 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", "--description", dest="description", required=False)
+ params = parser.parse_args()
+
+ print("Opening and parsing the dot file %s" % params.dot_file)
+ try:
+ monitor=dot2k(params.dot_file, params.monitor_type)
+ except Exception as e:
+ print('Error: '+ str(e))
+ print("Sorry : :-(")
+ sys.exit(1)
+
+ # easier than using argparse action.
+ if params.model_name != None:
+ print(params.model_name)
+
+ 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(" - Edit include/trace/events/rv.h to add the tracepoint entry")
+ print(" - Move it to the kernel's monitor directory")
+ print(" - Edit kernel/trace/rv/Makefile")
+ print(" - Edit kernel/trace/rv/Kconfig")
diff --git a/tools/verification/dot2/dot2k.py b/tools/verification/dot2/dot2k.py
new file mode 100644
index 000000000000..4eecd69c2568
--- /dev/null
+++ b/tools/verification/dot2/dot2k.py
@@ -0,0 +1,174 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@...nel.org>
+#
+# dot2k: transform dot files into a monitor for the Linux kernel.
+
+from dot2.dot2c import Dot2c
+import platform
+import os
+
+class dot2k(Dot2c):
+ monitor_types = { "global" : 1, "per_cpu" : 2, "per_task" : 3 }
+ monitor_templates_dir = "dot2k/rv_templates/"
+ monitor_type = "per_cpu"
+
+ def __init__(self, file_path, MonitorType):
+ super().__init__(file_path)
+
+ self.monitor_type = self.monitor_types.get(MonitorType)
+ if self.monitor_type == None:
+ raise Exception("Unknown monitor type: %s" % MonitorType)
+
+ self.monitor_type = MonitorType
+ self.__fill_rv_templates_dir()
+ self.main_c = self.__open_file(self.monitor_templates_dir + "main_" + MonitorType + ".c")
+ self.enum_suffix = "_%s" % self.name
+
+ def __fill_rv_templates_dir(self):
+
+ if os.path.exists(self.monitor_templates_dir) == True:
+ return
+
+ if platform.system() != "Linux":
+ raise Exception("I can only run on Linux.")
+
+ kernel_path = "/lib/modules/%s/build/tools/verification/dot2/dot2k_templates/" % (platform.release())
+
+ if os.path.exists(kernel_path) == True:
+ self.monitor_templates_dir = kernel_path
+ return
+
+ if os.path.exists("/usr/share/dot2/dot2k_templates/") == True:
+ self.monitor_templates_dir = "/usr/share/dot2/dot2k_templates/"
+ return
+
+ raise Exception("Could not find the template directory, do you have the kernel source installed?")
+
+
+ def __open_file(self, path):
+ try:
+ fd = open(path)
+ except OSError:
+ raise Exception("Cannot open the file: %s" % path)
+
+ content = fd.read()
+
+ return content
+
+ def __buff_to_string(self, buff):
+ string = ""
+
+ for line in buff:
+ string = string + line + "\n"
+
+ # cut off the last \n
+ return string[:-1]
+
+ def fill_tracepoint_handlers_skel(self):
+ buff = []
+ for event in self.events:
+ buff.append("static void handle_%s(void *data, /* XXX: fill header */)" % event)
+ buff.append("{")
+ if self.monitor_type == "per_task":
+ buff.append("\tstruct task_struct *p = /* XXX: how do I get p? */;");
+ buff.append("\tda_handle_event_%s(p, %s%s);" % (self.name, event, self.enum_suffix));
+ else:
+ buff.append("\tda_handle_event_%s(%s%s);" % (self.name, event, self.enum_suffix));
+ buff.append("}")
+ buff.append("")
+ return self.__buff_to_string(buff)
+
+ def fill_tracepoint_attach_probe(self):
+ buff = []
+ for event in self.events:
+ buff.append("\trv_attach_trace_probe(\"%s\", /* XXX: tracepoint */, handle_%s);" % (self.name, event))
+ return self.__buff_to_string(buff)
+
+ def fill_tracepoint_detach_helper(self):
+ buff = []
+ for event in self.events:
+ buff.append("\trv_detach_trace_probe(\"%s\", /* XXX: tracepoint */, handle_%s);" % (self.name, event))
+ return self.__buff_to_string(buff)
+
+ def fill_main_c(self):
+ main_c = self.main_c
+ min_type = self.get_minimun_type()
+ nr_events = self.events.__len__()
+ tracepoint_handlers = self.fill_tracepoint_handlers_skel()
+ tracepoint_attach = self.fill_tracepoint_attach_probe()
+ tracepoint_detach = self.fill_tracepoint_detach_helper()
+
+ main_c = main_c.replace("MIN_TYPE", min_type)
+ main_c = main_c.replace("MODEL_NAME", self.name)
+ main_c = main_c.replace("NR_EVENTS", str(nr_events))
+ main_c = main_c.replace("TRACEPOINT_HANDLERS_SKEL", tracepoint_handlers)
+ main_c = main_c.replace("TRACEPOINT_ATTACH", tracepoint_attach)
+ main_c = main_c.replace("TRACEPOINT_DETACH", tracepoint_detach)
+
+ return main_c
+
+ def fill_model_h_header(self):
+ buff = []
+ buff.append("/*")
+ buff.append(" * Automatically generated C representation of %s automaton" % (self.name))
+ buff.append(" * For further information about this format, see kernel documentation:")
+ buff.append(" * Documentation/trace/rv/deterministic_automata.rst")
+ buff.append(" */")
+ buff.append("")
+
+ return buff
+
+ def fill_model_h(self):
+ #
+ # Adjust the definition names
+ #
+ self.enum_states_def = "states_%s" % self.name
+ self.enum_events_def = "events_%s" % self.name
+ self.struct_automaton_def = "automaton_%s" % self.name
+ self.var_automaton_def = "automaton_%s" % self.name
+
+ buff = self.fill_model_h_header()
+ buff += self.format_model()
+
+ return self.__buff_to_string(buff)
+
+ def __create_directory(self):
+ try:
+ os.mkdir(self.name)
+ except FileExistsError:
+ return
+ except:
+ print("Fail creating the output dir: %s" % self.name)
+
+ def __create_file(self, file_name, content):
+ path = "%s/%s" % (self.name, file_name)
+ try:
+ file = open(path, 'w')
+ except FileExistsError:
+ return
+ except:
+ print("Fail creating file: %s" % path)
+
+ file.write(content)
+
+ file.close()
+
+ def __get_main_name(self):
+ path = "%s/%s" % (self.name, "main.c")
+ if os.path.exists(path) == False:
+ return "main.c"
+ return "__main.c"
+
+ def print_files(self):
+ main_c = self.fill_main_c()
+ model_h = self.fill_model_h()
+
+ self.__create_directory()
+
+ path = "%s.c" % self.name
+ self.__create_file(path, main_c)
+
+ path = "%s.h" % self.name
+ self.__create_file(path, model_h)
diff --git a/tools/verification/dot2/dot2k_templates/main_global.c b/tools/verification/dot2/dot2k_templates/main_global.c
new file mode 100644
index 000000000000..f4b712dbc92e
--- /dev/null
+++ b/tools/verification/dot2/dot2k_templates/main_global.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/ftrace.h>
+#include <linux/tracepoint.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/rv.h>
+#include <rv/instrumentation.h>
+#include <rv/da_monitor.h>
+
+#define MODULE_NAME "MODEL_NAME"
+
+/*
+ * XXX: include required tracepoint headers, e.g.,
+ * #include <trace/events/sched.h>
+ */
+#include <trace/events/rv.h>
+
+/*
+ * This is the self-generated part of the monitor. Generally, there is no need
+ * to touch this section.
+ */
+#include "MODEL_NAME.h"
+
+/*
+ * Declare the deterministic automata monitor.
+ *
+ * The rv monitor reference is needed for the monitor declaration.
+ */
+struct rv_monitor rv_MODEL_NAME;
+DECLARE_DA_MON_GLOBAL(MODEL_NAME, MIN_TYPE);
+
+/*
+ * This is the instrumentation part of the monitor.
+ *
+ * This is the section where manual work is required. Here the kernel events
+ * are translated into model's event.
+ *
+ */
+TRACEPOINT_HANDLERS_SKEL
+static int enable_MODEL_NAME(void)
+{
+ int retval;
+
+ retval = da_monitor_init_MODEL_NAME();
+ if (retval)
+ return retval;
+
+TRACEPOINT_ATTACH
+
+ return 0;
+}
+
+static void disable_MODEL_NAME(void)
+{
+ rv_MODEL_NAME.enabled = 0;
+
+TRACEPOINT_DETACH
+
+ da_monitor_destroy_MODEL_NAME();
+}
+
+/*
+ * This is the monitor register section.
+ */
+struct rv_monitor rv_MODEL_NAME = {
+ .name = "MODEL_NAME",
+ .description = "auto-generated MODEL_NAME",
+ .enable = enable_MODEL_NAME,
+ .disable = disable_MODEL_NAME,
+ .reset = da_monitor_reset_all_MODEL_NAME,
+ .enabled = 0,
+};
+
+static int register_MODEL_NAME(void)
+{
+ rv_register_monitor(&rv_MODEL_NAME);
+ return 0;
+}
+
+static void unregister_MODEL_NAME(void)
+{
+ rv_unregister_monitor(&rv_MODEL_NAME);
+}
+
+module_init(register_MODEL_NAME);
+module_exit(unregister_MODEL_NAME);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("dot2k: auto-generated");
+MODULE_DESCRIPTION("MODEL_NAME");
diff --git a/tools/verification/dot2/dot2k_templates/main_per_cpu.c b/tools/verification/dot2/dot2k_templates/main_per_cpu.c
new file mode 100644
index 000000000000..4080d1ca3354
--- /dev/null
+++ b/tools/verification/dot2/dot2k_templates/main_per_cpu.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/ftrace.h>
+#include <linux/tracepoint.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/rv.h>
+#include <rv/instrumentation.h>
+#include <rv/da_monitor.h>
+
+#define MODULE_NAME "MODEL_NAME"
+
+/*
+ * XXX: include required tracepoint headers, e.g.,
+ * #include <linux/trace/events/sched.h>
+ */
+#include <trace/events/rv.h>
+
+/*
+ * This is the self-generated part of the monitor. Generally, there is no need
+ * to touch this section.
+ */
+#include "MODEL_NAME.h"
+
+/*
+ * Declare the deterministic automata monitor.
+ *
+ * The rv monitor reference is needed for the monitor declaration.
+ */
+struct rv_monitor rv_MODEL_NAME;
+DECLARE_DA_MON_PER_CPU(MODEL_NAME, MIN_TYPE);
+
+/*
+ * This is the instrumentation part of the monitor.
+ *
+ * This is the section where manual work is required. Here the kernel events
+ * are translated into model's event.
+ *
+ */
+TRACEPOINT_HANDLERS_SKEL
+static int enable_MODEL_NAME(void)
+{
+ int retval;
+
+ retval = da_monitor_init_MODEL_NAME();
+ if (retval)
+ return retval;
+
+TRACEPOINT_ATTACH
+
+ return 0;
+}
+
+static void disable_MODEL_NAME(void)
+{
+ rv_MODEL_NAME.enabled = 0;
+
+TRACEPOINT_DETACH
+
+ da_monitor_destroy_MODEL_NAME();
+}
+
+/*
+ * This is the monitor register section.
+ */
+struct rv_monitor rv_MODEL_NAME = {
+ .name = "MODEL_NAME",
+ .description = "auto-generated MODEL_NAME",
+ .enable = enable_MODEL_NAME,
+ .disable = disable_MODEL_NAME,
+ .reset = da_monitor_reset_all_MODEL_NAME,
+ .enabled = 0,
+};
+
+static int register_MODEL_NAME(void)
+{
+ rv_register_monitor(&rv_MODEL_NAME);
+ return 0;
+}
+
+static void unregister_MODEL_NAME(void)
+{
+ rv_unregister_monitor(&rv_MODEL_NAME);
+}
+
+module_init(register_MODEL_NAME);
+module_exit(unregister_MODEL_NAME);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("dot2k: auto-generated");
+MODULE_DESCRIPTION("MODEL_NAME");
diff --git a/tools/verification/dot2/dot2k_templates/main_per_task.c b/tools/verification/dot2/dot2k_templates/main_per_task.c
new file mode 100644
index 000000000000..89197175384f
--- /dev/null
+++ b/tools/verification/dot2/dot2k_templates/main_per_task.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/ftrace.h>
+#include <linux/tracepoint.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/rv.h>
+#include <rv/instrumentation.h>
+#include <rv/da_monitor.h>
+
+#define MODULE_NAME "MODEL_NAME"
+
+/*
+ * XXX: include required tracepoint headers, e.g.,
+ * #include <linux/trace/events/sched.h>
+ */
+#include <trace/events/rv.h>
+
+/*
+ * This is the self-generated part of the monitor. Generally, there is no need
+ * to touch this section.
+ */
+#include "MODEL_NAME.h"
+
+/*
+ * Declare the deterministic automata monitor.
+ *
+ * The rv monitor reference is needed for the monitor declaration.
+ */
+struct rv_monitor rv_MODEL_NAME;
+DECLARE_DA_MON_PER_TASK(MODEL_NAME, MIN_TYPE);
+
+/*
+ * This is the instrumentation part of the monitor.
+ *
+ * This is the section where manual work is required. Here the kernel events
+ * are translated into model's event.
+ *
+ */
+TRACEPOINT_HANDLERS_SKEL
+static int enable_MODEL_NAME(void)
+{
+ int retval;
+
+ retval = da_monitor_init_MODEL_NAME();
+ if (retval)
+ return retval;
+
+TRACEPOINT_ATTACH
+
+ return 0;
+}
+
+static void disable_MODEL_NAME(void)
+{
+ rv_MODEL_NAME.enabled = 0;
+
+TRACEPOINT_DETACH
+
+ da_monitor_destroy_MODEL_NAME();
+}
+
+/*
+ * This is the monitor register section.
+ */
+struct rv_monitor rv_MODEL_NAME = {
+ .name = "MODEL_NAME",
+ .description = "auto-generated MODEL_NAME",
+ .enable = enable_MODEL_NAME,
+ .disable = disable_MODEL_NAME,
+ .reset = da_monitor_reset_all_MODEL_NAME,
+ .enabled = 0,
+};
+
+static int register_MODEL_NAME(void)
+{
+ rv_register_monitor(&rv_MODEL_NAME);
+ return 0;
+}
+
+static void unregister_MODEL_NAME(void)
+{
+ rv_unregister_monitor(&rv_MODEL_NAME);
+}
+
+module_init(register_MODEL_NAME);
+module_exit(unregister_MODEL_NAME);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("dot2k: auto-generated");
+MODULE_DESCRIPTION("MODEL_NAME");
--
2.35.1
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