cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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plugin_hrtimer.c (1958B)

      1// SPDX-License-Identifier: LGPL-2.1
      2/*
      3 * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
      4 * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
      5 */
      6#include <stdio.h>
      7#include <stdlib.h>
      8#include <string.h>
      9
     10#include "event-parse.h"
     11#include "trace-seq.h"
     12
     13static int timer_expire_handler(struct trace_seq *s,
     14				struct tep_record *record,
     15				struct tep_event *event, void *context)
     16{
     17	trace_seq_printf(s, "hrtimer=");
     18
     19	if (tep_print_num_field(s, "0x%llx", event, "timer",
     20				record, 0) == -1)
     21		tep_print_num_field(s, "0x%llx", event, "hrtimer",
     22				    record, 1);
     23
     24	trace_seq_printf(s, " now=");
     25
     26	tep_print_num_field(s, "%llu", event, "now", record, 1);
     27
     28	tep_print_func_field(s, " function=%s", event, "function",
     29				record, 0);
     30	return 0;
     31}
     32
     33static int timer_start_handler(struct trace_seq *s,
     34			       struct tep_record *record,
     35			       struct tep_event *event, void *context)
     36{
     37	trace_seq_printf(s, "hrtimer=");
     38
     39	if (tep_print_num_field(s, "0x%llx", event, "timer",
     40				record, 0) == -1)
     41		tep_print_num_field(s, "0x%llx", event, "hrtimer",
     42				    record, 1);
     43
     44	tep_print_func_field(s, " function=%s", event, "function",
     45			     record, 0);
     46
     47	trace_seq_printf(s, " expires=");
     48	tep_print_num_field(s, "%llu", event, "expires", record, 1);
     49
     50	trace_seq_printf(s, " softexpires=");
     51	tep_print_num_field(s, "%llu", event, "softexpires", record, 1);
     52	return 0;
     53}
     54
     55int TEP_PLUGIN_LOADER(struct tep_handle *tep)
     56{
     57	tep_register_event_handler(tep, -1,
     58				   "timer", "hrtimer_expire_entry",
     59				   timer_expire_handler, NULL);
     60
     61	tep_register_event_handler(tep, -1, "timer", "hrtimer_start",
     62				   timer_start_handler, NULL);
     63	return 0;
     64}
     65
     66void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
     67{
     68	tep_unregister_event_handler(tep, -1,
     69				     "timer", "hrtimer_expire_entry",
     70				     timer_expire_handler, NULL);
     71
     72	tep_unregister_event_handler(tep, -1, "timer", "hrtimer_start",
     73				     timer_start_handler, NULL);
     74}