Commit 0c902633 authored by Athira Rajeev's avatar Athira Rajeev Committed by Michael Ellerman
Browse files

selftests/powerpc/pmu: Add selftest for reserved bit check for MMCRA thresh_ctl field 



Testcase for reserved bits in Monitor Mode Control Register A (MMCRA)
thresh_ctl bits. For MMCRA[48:51]/[52:55]) Threshold Start/Stop,
0b11110000/0b00001111 is reserved.

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/20220610134113.62991-25-atrajeev@linux.vnet.ibm.com
parent 5196a279

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

+1 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 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_radix_scope_qual_test reserved_bits_mmcra_sample_elig_mode_test \

	group_constraint_mmcra_sample_test invalid_event_code_test

	group_constraint_mmcra_sample_test invalid_event_code_test reserved_bits_mmcra_thresh_ctl_test



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

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

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

0 → 100644
+44 −0
Original line number Diff line number Diff line 
// 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 reserved bits in Monitor Mode

 * Control Register A (MMCRA) thresh_ctl bits.

 * For MMCRA[48:51]/[52:55]) Threshold Start/Stop,

 * 0b11110000/0b00001111 is reserved.

 */



static int reserved_bits_mmcra_thresh_ctl(void)

{

	struct event event;



	/* Check for platform support for the test */

	SKIP_IF(platform_check_for_tests());



	/* Skip for Generic compat PMU */

	SKIP_IF(check_for_generic_compat_pmu());



	/*

	 * MMCRA[48:51]/[52:55]) Threshold Start/Stop

	 * events Selection. 0b11110000/0b00001111 is reserved.

	 * Expected to fail when using these reserved values.

	 */

	event_init(&event, 0xf0340401e0);

	FAIL_IF(!event_open(&event));



	event_init(&event, 0x0f340401e0);

	FAIL_IF(!event_open(&event));



	return 0;

}



int main(void)

{

	return test_harness(reserved_bits_mmcra_thresh_ctl, "reserved_bits_mmcra_thresh_ctl");

}