rv: Add rtapp container monitor

Add the container "rtapp" which is the monitor collection for detecting
problems with real-time applications. The monitors will be added in the
follow-up commits.

Cc: John Ogness <john.ogness@linutronix.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/fb18b87631d386271de00959d8d4826f23fcd1cd.1752088709.git.namcao@linutronix.de
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/kernel/trace/rv/Kconfig b/kernel/trace/rv/Kconfig
index 6e157f964991558ac4273bf40aced3caed08258b..5c407d29166146e7a3f89d40ddbbaf7a9ad5aced 100644 (file)
--- a/kernel/trace/rv/Kconfig
+++ b/kernel/trace/rv/Kconfig
@@ -41,6 +41,7 @@ source "kernel/trace/rv/monitors/snroc/Kconfig"
 source "kernel/trace/rv/monitors/scpd/Kconfig"
 source "kernel/trace/rv/monitors/snep/Kconfig"
 source "kernel/trace/rv/monitors/sncid/Kconfig"
+source "kernel/trace/rv/monitors/rtapp/Kconfig"
 # Add new monitors here
 
 config RV_REACTORS

diff --git a/kernel/trace/rv/Makefile b/kernel/trace/rv/Makefile
index f9b2cd0483c3cbdfa63fac9736b4b9347c23a901..9b28c241999555ae2a68263a6e3caf456e525534 100644 (file)
--- a/kernel/trace/rv/Makefile
+++ b/kernel/trace/rv/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_RV_MON_SNROC) += monitors/snroc/snroc.o
 obj-$(CONFIG_RV_MON_SCPD) += monitors/scpd/scpd.o
 obj-$(CONFIG_RV_MON_SNEP) += monitors/snep/snep.o
 obj-$(CONFIG_RV_MON_SNCID) += monitors/sncid/sncid.o
+obj-$(CONFIG_RV_MON_RTAPP) += monitors/rtapp/rtapp.o
 # Add new monitors here
 obj-$(CONFIG_RV_REACTORS) += rv_reactors.o
 obj-$(CONFIG_RV_REACT_PRINTK) += reactor_printk.o

diff --git a/kernel/trace/rv/monitors/rtapp/Kconfig b/kernel/trace/rv/monitors/rtapp/Kconfig
new file mode 100644 (file)
index 0000000..b7415c3
--- /dev/null
+++ b/kernel/trace/rv/monitors/rtapp/Kconfig
@@ -0,0 +1,10 @@
+config RV_MON_RTAPP
+       depends on RV
+       bool "rtapp monitor"
+       help
+         Collection of monitors to check for common problems with real-time
+         application that may cause unexpected latency.
+
+         If you are developing a real-time system and not entirely sure whether
+         the applications are designed correctly for real-time, you want to say
+         Y here.

diff --git a/kernel/trace/rv/monitors/rtapp/rtapp.c b/kernel/trace/rv/monitors/rtapp/rtapp.c
new file mode 100644 (file)
index 0000000..fd75fc9
--- /dev/null
+++ b/kernel/trace/rv/monitors/rtapp/rtapp.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/rv.h>
+
+#define MODULE_NAME "rtapp"
+
+#include "rtapp.h"
+
+struct rv_monitor rv_rtapp;
+
+struct rv_monitor rv_rtapp = {
+       .name = "rtapp",
+       .description = "Collection of monitors for detecting problems with real-time applications",
+};
+
+static int __init register_rtapp(void)
+{
+       return rv_register_monitor(&rv_rtapp, NULL);
+}
+
+static void __exit unregister_rtapp(void)
+{
+       rv_unregister_monitor(&rv_rtapp);
+}
+
+module_init(register_rtapp);
+module_exit(unregister_rtapp);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Nam Cao <namcao@linutronix.de>");
+MODULE_DESCRIPTION("Collection of monitors for detecting problems with real-time applications");

diff --git a/kernel/trace/rv/monitors/rtapp/rtapp.h b/kernel/trace/rv/monitors/rtapp/rtapp.h
new file mode 100644 (file)
index 0000000..4c200d6
--- /dev/null
+++ b/kernel/trace/rv/monitors/rtapp/rtapp.h
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+extern struct rv_monitor rv_rtapp;