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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 "wip"
#include <trace/events/rv.h>
#include <trace/events/sched.h>
#include <trace/events/preemptirq.h>
#include "wip.h"
static struct rv_monitor rv_wip;
DECLARE_DA_MON_PER_CPU(wip, unsigned char);
static void handle_preempt_disable(void *data, unsigned long ip, unsigned long parent_ip)
{
da_handle_event_wip(preempt_disable_wip);
}
static void handle_preempt_enable(void *data, unsigned long ip, unsigned long parent_ip)
{
da_handle_start_event_wip(preempt_enable_wip);
}
static void handle_sched_waking(void *data, struct task_struct *task)
{
da_handle_event_wip(sched_waking_wip);
}
static int enable_wip(void)
{
int retval;
retval = da_monitor_init_wip();
if (retval)
return retval;
rv_attach_trace_probe("wip", preempt_enable, handle_preempt_enable);
rv_attach_trace_probe("wip", sched_waking, handle_sched_waking);
rv_attach_trace_probe("wip", preempt_disable, handle_preempt_disable);
return 0;
}
static void disable_wip(void)
{
rv_wip.enabled = 0;
rv_detach_trace_probe("wip", preempt_disable, handle_preempt_disable);
rv_detach_trace_probe("wip", preempt_enable, handle_preempt_enable);
rv_detach_trace_probe("wip", sched_waking, handle_sched_waking);
da_monitor_destroy_wip();
}
static struct rv_monitor rv_wip = {
.name = "wip",
.description = "wakeup in preemptive per-cpu testing monitor.",
.enable = enable_wip,
.disable = disable_wip,
.reset = da_monitor_reset_all_wip,
.enabled = 0,
};
static int __init register_wip(void)
{
rv_register_monitor(&rv_wip);
return 0;
}
static void __exit unregister_wip(void)
{
rv_unregister_monitor(&rv_wip);
}
module_init(register_wip);
module_exit(unregister_wip);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Daniel Bristot de Oliveira <bristot@kernel.org>");
MODULE_DESCRIPTION("wip: wakeup in preemptive - per-cpu sample monitor.");
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