1 files changed, 85 insertions, 0 deletions
diff --git a/kernel/trace/rv/monitors/sco/sco.c b/kernel/trace/rv/monitors/sco/sco.c
new file mode 100644
index 000000000000..5a3bd5e16e62
--- /dev/null
+++ b/kernel/trace/rv/monitors/sco/sco.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>
+
+#define MODULE_NAME "sco"
+
+#include <trace/events/sched.h>
+#include <rv_trace.h>
+#include <monitors/sched/sched.h>
+
+#define RV_MON_TYPE RV_MON_PER_CPU
+#include "sco.h"
+#include <rv/da_monitor.h>
+
+static void handle_sched_set_state(void *data, struct task_struct *tsk, int state)
+{
+	da_handle_start_event(sched_set_state_sco);
+}
+
+static void handle_schedule_entry(void *data, bool preempt)
+{
+	da_handle_event(schedule_entry_sco);
+}
+
+static void handle_schedule_exit(void *data, bool is_switch)
+{
+	da_handle_start_event(schedule_exit_sco);
+}
+
+static int enable_sco(void)
+{
+	int retval;
+
+	retval = da_monitor_init();
+	if (retval)
+		return retval;
+
+	rv_attach_trace_probe("sco", sched_set_state_tp, handle_sched_set_state);
+	rv_attach_trace_probe("sco", sched_entry_tp, handle_schedule_entry);
+	rv_attach_trace_probe("sco", sched_exit_tp, handle_schedule_exit);
+
+	return 0;
+}
+
+static void disable_sco(void)
+{
+	rv_this.enabled = 0;
+
+	rv_detach_trace_probe("sco", sched_set_state_tp, handle_sched_set_state);
+	rv_detach_trace_probe("sco", sched_entry_tp, handle_schedule_entry);
+	rv_detach_trace_probe("sco", sched_exit_tp, handle_schedule_exit);
+
+	da_monitor_destroy();
+}
+
+static struct rv_monitor rv_this = {
+	.name = "sco",
+	.description = "scheduling context operations.",
+	.enable = enable_sco,
+	.disable = disable_sco,
+	.reset = da_monitor_reset_all,
+	.enabled = 0,
+};
+
+static int __init register_sco(void)
+{
+	return rv_register_monitor(&rv_this, &rv_sched);
+}
+
+static void __exit unregister_sco(void)
+{
+	rv_unregister_monitor(&rv_this);
+}
+
+module_init(register_sco);
+module_exit(unregister_sco);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Gabriele Monaco <gmonaco@redhat.com>");
+MODULE_DESCRIPTION("sco: scheduling context operations.");