From patchwork Fri May 6 08:45:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kajol Jain X-Patchwork-Id: 1627480 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=SVtNOveN; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4KvlB941tnz9sGS for ; Fri, 6 May 2022 19:09:21 +1000 (AEST) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KvlB91V2Cz3fT9 for ; Fri, 6 May 2022 19:09:21 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=SVtNOveN; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=kjain@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=SVtNOveN; dkim-atps=neutral Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4KvknM2bkqz3dx7 for ; Fri, 6 May 2022 18:51:19 +1000 (AEST) Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2467kuiR013525; Fri, 6 May 2022 08:51:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=LnIcBtw0SXGsVF7nQanyIScN+/N8cxLlLVK711DVHLI=; b=SVtNOveN5+MiGt3SN0CK16R28e6lWMjEBF7p3kQ6OW7bbxNUe8Wv7/hZxwRtJ8mFoSwn fZmk4PYvhUlke+xwfQUuqWtpquBEyKtPrYEBukzD5FFY0t/rY3QeNHDMFvcfA2sRdb6g C90yB7MFzCg7cJTAaW39fPJxofoa+2zTKkyaNhZ8sVEG1PE7fASzpwCzqNw3hR6uyoLN Yblvz1Di31kX9qKHF/AbO6B4KG+O2FPHSR2f63hoVg2AsXpdNLWKM/KhoVEJT4MSBhUZ kFJAV54QKNS5BxgevLjDBiBMkaNVPD+VYwSr0QX+b9cIzLk9fx322R81YAMF4HW5N4/z xA== Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3fvyk8h4yn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 May 2022 08:51:13 +0000 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 2468gaTg013995; Fri, 6 May 2022 08:46:10 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma05fra.de.ibm.com with ESMTP id 3frvr8ppu5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 06 May 2022 08:46:10 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2468Wgd053150048 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 May 2022 08:32:43 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2281F4C046; Fri, 6 May 2022 08:46:07 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 00AE14C044; Fri, 6 May 2022 08:46:05 +0000 (GMT) Received: from li-e8dccbcc-2adc-11b2-a85c-bc1f33b9b810.ibm.com.com (unknown [9.43.19.224]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 6 May 2022 08:46:04 +0000 (GMT) From: Kajol Jain To: mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 05/35] selftest/powerpc/pmu: Add interface test for mmcra_ifm field of indirect call type Date: Fri, 6 May 2022 14:15:14 +0530 Message-Id: <20220506084544.56527-6-kjain@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220506084544.56527-1-kjain@linux.ibm.com> References: <20220506084544.56527-1-kjain@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: gpWYjcpoFzTpe0AMN6RqIOhKDl8Xbi9M X-Proofpoint-GUID: gpWYjcpoFzTpe0AMN6RqIOhKDl8Xbi9M X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-06_01,2022-05-05_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 priorityscore=1501 phishscore=0 spamscore=0 suspectscore=0 mlxlogscore=999 lowpriorityscore=0 bulkscore=0 impostorscore=0 clxscore=1015 malwarescore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205060045 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kjain@linux.ibm.com, atrajeev@linux.vnet.ibm.com, maddy@linux.ibm.com, disgoel@linux.vnet.ibm.com, rnsastry@linux.ibm.com Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" The testcase uses "instructions" event to check if the Instruction filtering mode(IFM) bits are programmed correctly for indirect branch type. Testcase checks if IFM bits are programmed correctly to Monitor Mode Control Register A (MMCRA) via perf interface for ISA v3.1 platform. Signed-off-by: Kajol Jain --- .../selftests/powerpc/pmu/branch_loops.S | 28 ++++++++ .../powerpc/pmu/sampling_tests/Makefile | 5 +- .../sampling_tests/mmcra_bhrb_ind_call_test.c | 69 +++++++++++++++++++ 3 files changed, 100 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/powerpc/pmu/branch_loops.S create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_ind_call_test.c Note: - branch_loops.S is derived from the branch_loop.S in the path: linux/tools/testing/selftests/powerpc/security/branch_loops.S diff --git a/tools/testing/selftests/powerpc/pmu/branch_loops.S b/tools/testing/selftests/powerpc/pmu/branch_loops.S new file mode 100644 index 000000000000..de758dd3cecf --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/branch_loops.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2022, Kajol Jain, IBM Corp. + */ + +#include + + .text + +#define ITER_SHIFT 31 + +FUNC_START(indirect_branch_loop) + li r3, 1 + sldi r3, r3, ITER_SHIFT + +1: cmpdi r3, 0 + beqlr + + addi r3, r3, -1 + + ld r4, 2f@got(%r2) + mtctr r4 + bctr + + .balign 32 +2: b 1b + +FUNC_END(indirect_branch_loop) diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile b/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile index 6508e6074bac..89def6e706c8 100644 --- a/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile @@ -4,9 +4,10 @@ CFLAGS += -m64 TEST_GEN_PROGS := mmcr0_exceptionbits_test mmcr0_cc56run_test mmcr0_pmccext_test \ mmcr0_pmcjce_test mmcr0_fc56_pmc1ce_test mmcr0_fc56_pmc56_test \ mmcr1_comb_test mmcr2_l2l3_test mmcr2_fcs_fch_test \ - mmcr3_src_test mmcra_thresh_marked_sample_test mmcra_thresh_cmp_test + mmcr3_src_test mmcra_thresh_marked_sample_test mmcra_thresh_cmp_test \ + mmcra_bhrb_ind_call_test top_srcdir = ../../../../../.. include ../../../lib.mk -$(TEST_GEN_PROGS): ../../harness.c ../../utils.c ../event.c ../lib.c misc.c misc.h ../loop.S +$(TEST_GEN_PROGS): ../../harness.c ../../utils.c ../event.c ../lib.c misc.c misc.h ../loop.S ../branch_loops.S diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_ind_call_test.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_ind_call_test.c new file mode 100644 index 000000000000..f0706730c099 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_ind_call_test.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2022, Kajol Jain, IBM Corp. + */ + +#include +#include + +#include "../event.h" +#include "misc.h" +#include "utils.h" + +extern void indirect_branch_loop(void); + +/* Instructions */ +#define EventCode 0x500fa + +/* ifm field for indirect branch mode */ +#define IFM_IND_BRANCH 0x2 + +/* + * A perf sampling test for mmcra + * field: ifm for bhrb ind_call. + */ +static int mmcra_bhrb_ind_call_test(void) +{ + struct event event; + u64 *intr_regs; + + /* + * Check for platform support for the test. + * This test is only aplicable on power10 + */ + SKIP_IF(check_pvr_for_sampling_tests()); + SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1)); + + /* Init the event for the sampling test */ + event_init_sampling(&event, EventCode); + event.attr.sample_regs_intr = platform_extended_mask; + event.attr.sample_type |= PERF_SAMPLE_BRANCH_STACK; + event.attr.branch_sample_type = PERF_SAMPLE_BRANCH_IND_CALL; + event.attr.exclude_kernel = 1; + + FAIL_IF(event_open(&event)); + event.mmap_buffer = event_sample_buf_mmap(event.fd, 1); + + FAIL_IF(event_enable(&event)); + + /* workload to make the event overflow */ + indirect_branch_loop(); + + FAIL_IF(event_disable(&event)); + + intr_regs = get_intr_regs(&event, event.mmap_buffer); + + /* Check for intr_regs */ + FAIL_IF(!intr_regs); + + /* Verify that ifm bit is set properly in MMCRA */ + FAIL_IF(get_mmcra_ifm(get_reg_value(intr_regs, "MMCRA"), 5) != IFM_IND_BRANCH); + + event_close(&event); + return 0; +} + +int main(void) +{ + return test_harness(mmcra_bhrb_ind_call_test, "mmcra_bhrb_ind_call_test"); +}