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// 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.");
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