evsel-tp-sched.c

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// SPDX-License-Identifier: GPL-2.0
#include <linux/err.h>
#include <traceevent/event-parse.h>
#include "evsel.h"
#include "tests.h"
#include "debug.h"

static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name,
                  int size, bool should_be_signed)
{
    struct format_field *field = perf_evsel__field(evsel, name);
    int is_signed;
    int ret = 0;

    if (field == NULL) {
        pr_debug("%s: \"%s\" field not found!\n", evsel->name, name);
        return -1;
    }

    is_signed = !!(field->flags | FIELD_IS_SIGNED);
    if (should_be_signed && !is_signed) {
        pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
             evsel->name, name, is_signed, should_be_signed);
        ret = -1;
    }

    if (field->size != size) {
        pr_debug("%s: \"%s\" size (%d) should be %d!\n",
             evsel->name, name, field->size, size);
        ret = -1;
    }

    return ret;
}

int test__perf_evsel__tp_sched_test(struct test *test __maybe_unused, int subtest __maybe_unused)
{
    struct perf_evsel *evsel = perf_evsel__newtp("sched", "sched_switch");
    int ret = 0;

    if (IS_ERR(evsel)) {
        pr_debug("perf_evsel__newtp failed with %ld\n", PTR_ERR(evsel));
        return -1;
    }

    if (perf_evsel__test_field(evsel, "prev_comm", 16, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "prev_pid", 4, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "prev_prio", 4, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "prev_state", sizeof(long), true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "next_comm", 16, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "next_pid", 4, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "next_prio", 4, true))
        ret = -1;

    perf_evsel__delete(evsel);

    evsel = perf_evsel__newtp("sched", "sched_wakeup");

    if (IS_ERR(evsel)) {
        pr_debug("perf_evsel__newtp failed with %ld\n", PTR_ERR(evsel));
        return -1;
    }

    if (perf_evsel__test_field(evsel, "comm", 16, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "pid", 4, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "prio", 4, true))
        ret = -1;

    if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
        ret = -1;

    return ret;
}