1 files changed, 85 insertions, 0 deletions
diff --git a/kernel/trace/rv/monitors/snroc/snroc.c b/kernel/trace/rv/monitors/snroc/snroc.c
new file mode 100644
index 000000000000..bb1f60d55296
--- /dev/null
+++ b/kernel/trace/rv/monitors/snroc/snroc.c
@@ -0,0 +1,85 @@
+// 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 "snroc"
+
+#include <trace/events/sched.h>
+#include <rv_trace.h>
+#include <monitors/sched/sched.h>
+
+#include "snroc.h"
+
+static struct rv_monitor rv_snroc;
+DECLARE_DA_MON_PER_TASK(snroc, unsigned char);
+
+static void handle_sched_set_state(void *data, struct task_struct *tsk, int state)
+{
+	da_handle_event_snroc(tsk, sched_set_state_snroc);
+}
+
+static void handle_sched_switch(void *data, bool preempt,
+				struct task_struct *prev,
+				struct task_struct *next,
+				unsigned int prev_state)
+{
+	da_handle_start_event_snroc(prev, sched_switch_out_snroc);
+	da_handle_event_snroc(next, sched_switch_in_snroc);
+}
+
+static int enable_snroc(void)
+{
+	int retval;
+
+	retval = da_monitor_init_snroc();
+	if (retval)
+		return retval;
+
+	rv_attach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
+	rv_attach_trace_probe("snroc", sched_switch, handle_sched_switch);
+
+	return 0;
+}
+
+static void disable_snroc(void)
+{
+	rv_snroc.enabled = 0;
+
+	rv_detach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
+	rv_detach_trace_probe("snroc", sched_switch, handle_sched_switch);
+
+	da_monitor_destroy_snroc();
+}
+
+static struct rv_monitor rv_snroc = {
+	.name = "snroc",
+	.description = "set non runnable on its own context.",
+	.enable = enable_snroc,
+	.disable = disable_snroc,
+	.reset = da_monitor_reset_all_snroc,
+	.enabled = 0,
+};
+
+static int __init register_snroc(void)
+{
+	rv_register_monitor(&rv_snroc, &rv_sched);
+	return 0;
+}
+
+static void __exit unregister_snroc(void)
+{
+	rv_unregister_monitor(&rv_snroc);
+}
+
+module_init(register_snroc);
+module_exit(unregister_snroc);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Gabriele Monaco <gmonaco@redhat.com>");
+MODULE_DESCRIPTION("snroc: set non runnable on its own context.");