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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Kajol Jain, IBM Corp.
*/
#include <stdio.h>
#include <stdlib.h>
#include "../event.h"
#include "utils.h"
#include "../sampling_tests/misc.h"
/* All successful D-side store dispatches for this thread with PMC 2 */
#define EventCode_1 0x26080
/* All successful D-side store dispatches for this thread with PMC 4 */
#define EventCode_2 0x46080
/* All successful D-side store dispatches for this thread that were L2 Miss with PMC 3 */
#define EventCode_3 0x36880
/*
* Testcase for group constraint check of unit and pmc bits which is
* used to program corresponding unit and pmc field in Monitor Mode
* Control Register 1 (MMCR1)
* One of the event in the group should use PMC 4 incase units field
* value is within 6 to 9 otherwise event_open for the group will fail.
*/
static int group_constraint_unit(void)
{
struct event *e, events[3];
/*
* Check for platform support for the test.
* Constraint to use PMC4 with one of the event in group,
* when the unit is within 6 to 9 is only applicable on
* power9.
*/
SKIP_IF(platform_check_for_tests());
SKIP_IF(have_hwcap2(PPC_FEATURE2_ARCH_3_1));
/* Init the events for the group contraint check for unit bits */
e = &events[0];
event_init(e, EventCode_1);
/* Expected to fail as PMC 4 is not used with unit field value 6 to 9 */
FAIL_IF(!event_open(&events[0]));
/* Init the events for the group contraint check for unit bits */
e = &events[1];
event_init(e, EventCode_2);
/* Expected to pass as PMC 4 is used with unit field value 6 to 9 */
FAIL_IF(event_open(&events[1]));
/* Init the event for the group contraint unit test */
e = &events[2];
event_init(e, EventCode_3);
/* Expected to fail as PMC4 is not being used */
FAIL_IF(!event_open_with_group(&events[2], events[0].fd));
/* Expected to succeed as event using PMC4 */
FAIL_IF(event_open_with_group(&events[2], events[1].fd));
event_close(&events[0]);
event_close(&events[1]);
event_close(&events[2]);
return 0;
}
int main(void)
{
return test_harness(group_constraint_unit, "group_constraint_unit");
}
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