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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evsel-tp-sched.c (2145B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/err.h>
      3#include <traceevent/event-parse.h>
      4#include "evsel.h"
      5#include "tests.h"
      6#include "debug.h"
      7
      8static int evsel__test_field(struct evsel *evsel, const char *name, int size, bool should_be_signed)
      9{
     10	struct tep_format_field *field = evsel__field(evsel, name);
     11	int is_signed;
     12	int ret = 0;
     13
     14	if (field == NULL) {
     15		pr_debug("%s: \"%s\" field not found!\n", evsel->name, name);
     16		return -1;
     17	}
     18
     19	is_signed = !!(field->flags & TEP_FIELD_IS_SIGNED);
     20	if (should_be_signed && !is_signed) {
     21		pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
     22			 evsel->name, name, is_signed, should_be_signed);
     23		ret = -1;
     24	}
     25
     26	if (field->size != size) {
     27		pr_debug("%s: \"%s\" size (%d) should be %d!\n",
     28			 evsel->name, name, field->size, size);
     29		ret = -1;
     30	}
     31
     32	return ret;
     33}
     34
     35static int test__perf_evsel__tp_sched_test(struct test_suite *test __maybe_unused,
     36					   int subtest __maybe_unused)
     37{
     38	struct evsel *evsel = evsel__newtp("sched", "sched_switch");
     39	int ret = 0;
     40
     41	if (IS_ERR(evsel)) {
     42		pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel));
     43		return -1;
     44	}
     45
     46	if (evsel__test_field(evsel, "prev_comm", 16, false))
     47		ret = -1;
     48
     49	if (evsel__test_field(evsel, "prev_pid", 4, true))
     50		ret = -1;
     51
     52	if (evsel__test_field(evsel, "prev_prio", 4, true))
     53		ret = -1;
     54
     55	if (evsel__test_field(evsel, "prev_state", sizeof(long), true))
     56		ret = -1;
     57
     58	if (evsel__test_field(evsel, "next_comm", 16, false))
     59		ret = -1;
     60
     61	if (evsel__test_field(evsel, "next_pid", 4, true))
     62		ret = -1;
     63
     64	if (evsel__test_field(evsel, "next_prio", 4, true))
     65		ret = -1;
     66
     67	evsel__delete(evsel);
     68
     69	evsel = evsel__newtp("sched", "sched_wakeup");
     70
     71	if (IS_ERR(evsel)) {
     72		pr_debug("evsel__newtp failed with %ld\n", PTR_ERR(evsel));
     73		return -1;
     74	}
     75
     76	if (evsel__test_field(evsel, "comm", 16, false))
     77		ret = -1;
     78
     79	if (evsel__test_field(evsel, "pid", 4, true))
     80		ret = -1;
     81
     82	if (evsel__test_field(evsel, "prio", 4, true))
     83		ret = -1;
     84
     85	if (evsel__test_field(evsel, "target_cpu", 4, true))
     86		ret = -1;
     87
     88	evsel__delete(evsel);
     89	return ret;
     90}
     91
     92DEFINE_SUITE("Parse sched tracepoints fields", perf_evsel__tp_sched_test);