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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Athira Rajeev, IBM Corp.
*/
#include <stdio.h>
#include "../event.h"
#include "../sampling_tests/misc.h"
/*
* Testcase for number of counters in use.
* The number of programmable counters is from
* performance monitor counter 1 to performance
* monitor counter 4 (PMC1-PMC4). If number of
* counters in use exceeds the limit, next event
* should fail to schedule.
*/
static int group_constraint_pmc_count(void)
{
struct event *e, events[5];
int i;
/* Check for platform support for the test */
SKIP_IF(platform_check_for_tests());
/*
* Test for number of counters in use.
* Use PMC1 to PMC4 for leader and 3 sibling
* events. Trying to open fourth event should
* fail here.
*/
e = &events[0];
event_init(e, 0x1001a);
e = &events[1];
event_init(e, 0x200fc);
e = &events[2];
event_init(e, 0x30080);
e = &events[3];
event_init(e, 0x40054);
e = &events[4];
event_init(e, 0x0002c);
FAIL_IF(event_open(&events[0]));
/*
* The event_open will fail on event 4 if constraint
* check fails
*/
for (i = 1; i < 5; i++) {
if (i == 4)
FAIL_IF(!event_open_with_group(&events[i], events[0].fd));
else
FAIL_IF(event_open_with_group(&events[i], events[0].fd));
}
for (i = 1; i < 4; i++)
event_close(&events[i]);
return 0;
}
int main(void)
{
return test_harness(group_constraint_pmc_count, "group_constraint_pmc_count");
}
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