Commit dc431be3 authored by Athira Rajeev's avatar Athira Rajeev Committed by Michael Ellerman
Browse files

selftests/powerpc/pmu: Add selftest for group constraint check for radix_scope_qual field 



Testcase for group constraint check for radix_scope_qual field which is
used to program Monitor Mode Control Register (MMCR1) bit 18. All events
in the group should match radix_scope_qual bit, otherwise event_open for
the group should fail. Testcase uses "0x14242" (PM_DATA_RADIX_PROCESS_L2_PTE_FROM_L2)
with radix_scope_qual bit set for power10.

Signed-off-by: default avatarAthira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220610134113.62991-21-atrajeev@linux.vnet.ibm.com
parent 38b6da45

tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile

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@@ -2,7 +2,7 @@ 
CFLAGS += -m64



TEST_GEN_PROGS := group_constraint_pmc56_test group_pmc56_exclude_constraints_test group_constraint_pmc_count_test \

	group_constraint_repeat_test

	group_constraint_repeat_test group_constraint_radix_scope_qual_test



top_srcdir = ../../../../../..

include ../../../lib.mk

tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_radix_scope_qual_test.c

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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"



/* PM_DATA_RADIX_PROCESS_L2_PTE_FROM_L2 */

#define EventCode_1 0x14242

/* PM_DATA_RADIX_PROCESS_L2_PTE_FROM_L3 */

#define EventCode_2 0x24242



/*

 * Testcase for group constraint check for radix_scope_qual

 * field which is used to program Monitor Mode Control

 * egister (MMCR1)  bit 18.

 * All events in the group should match radix_scope_qual,

 * bits otherwise event_open for the group should fail.

 */



static int group_constraint_radix_scope_qual(void)

{

	struct event event, leader;



	/*

	 * Check for platform support for the test.

	 * This test is aplicable on power10 only.

	 */

	SKIP_IF(platform_check_for_tests());

	SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1));



	/* Init the events for the group contraint check for radix_scope_qual bits */

	event_init(&leader, EventCode_1);

	FAIL_IF(event_open(&leader));



	event_init(&event, 0x200fc);



	/* Expected to fail as sibling event doesn't request same radix_scope_qual bits as leader */

	FAIL_IF(!event_open_with_group(&event, leader.fd));



	event_init(&event, EventCode_2);

	/* Expected to pass as sibling event request same radix_scope_qual bits as leader */

	FAIL_IF(event_open_with_group(&event, leader.fd));



	event_close(&leader);

	event_close(&event);

	return 0;

}



int main(void)

{

	return test_harness(group_constraint_radix_scope_qual,

			    "group_constraint_radix_scope_qual");

}