85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/ftrace.h>
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#include <linux/tracepoint.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/rv.h>
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#include <rv/instrumentation.h>
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#include <rv/da_monitor.h>
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#define MODULE_NAME "snroc"
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#include <trace/events/sched.h>
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#include <rv_trace.h>
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#include <monitors/sched/sched.h>
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#include "snroc.h"
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static struct rv_monitor rv_snroc;
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DECLARE_DA_MON_PER_TASK(snroc, unsigned char);
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static void handle_sched_set_state(void *data, struct task_struct *tsk, int state)
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{
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da_handle_event_snroc(tsk, sched_set_state_snroc);
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}
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static void handle_sched_switch(void *data, bool preempt,
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struct task_struct *prev,
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struct task_struct *next,
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unsigned int prev_state)
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{
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da_handle_start_event_snroc(prev, sched_switch_out_snroc);
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da_handle_event_snroc(next, sched_switch_in_snroc);
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}
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static int enable_snroc(void)
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{
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int retval;
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retval = da_monitor_init_snroc();
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if (retval)
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return retval;
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rv_attach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
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rv_attach_trace_probe("snroc", sched_switch, handle_sched_switch);
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return 0;
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}
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static void disable_snroc(void)
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{
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rv_snroc.enabled = 0;
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rv_detach_trace_probe("snroc", sched_set_state_tp, handle_sched_set_state);
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rv_detach_trace_probe("snroc", sched_switch, handle_sched_switch);
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da_monitor_destroy_snroc();
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}
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static struct rv_monitor rv_snroc = {
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.name = "snroc",
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.description = "set non runnable on its own context.",
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.enable = enable_snroc,
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.disable = disable_snroc,
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.reset = da_monitor_reset_all_snroc,
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.enabled = 0,
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};
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static int __init register_snroc(void)
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{
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return rv_register_monitor(&rv_snroc, &rv_sched);
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}
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static void __exit unregister_snroc(void)
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{
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rv_unregister_monitor(&rv_snroc);
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}
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module_init(register_snroc);
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module_exit(unregister_snroc);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Gabriele Monaco <gmonaco@redhat.com>");
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MODULE_DESCRIPTION("snroc: set non runnable on its own context.");
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