From patchwork Sat Feb 1 15:28:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janosch Frank X-Patchwork-Id: 11361133 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 29C94159A for ; Sat, 1 Feb 2020 15:29:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1263F20723 for ; Sat, 1 Feb 2020 15:29:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726677AbgBAP3F (ORCPT ); Sat, 1 Feb 2020 10:29:05 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:3640 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726668AbgBAP3F (ORCPT ); Sat, 1 Feb 2020 10:29:05 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 011FGpK1030097 for ; Sat, 1 Feb 2020 10:29:04 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2xw6qcf80m-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Sat, 01 Feb 2020 10:29:03 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Sat, 1 Feb 2020 15:28:58 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 011FSviE54526000 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 1 Feb 2020 15:28:57 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B607652051; Sat, 1 Feb 2020 15:28:57 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.30.110]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id E74F85204E; Sat, 1 Feb 2020 15:28:56 +0000 (GMT) From: Janosch Frank To: kvm@vger.kernel.org Cc: thuth@redhat.com, borntraeger@de.ibm.com, linux-s390@vger.kernel.org, david@redhat.com, cohuck@redhat.com Subject: [kvm-unit-tests PATCH v5 1/7] s390x: smp: Cleanup smp.c Date: Sat, 1 Feb 2020 10:28:45 -0500 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200201152851.82867-1-frankja@linux.ibm.com> References: <20200201152851.82867-1-frankja@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 20020115-0028-0000-0000-000003D68679 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20020115-0029-0000-0000-0000249ADAC6 Message-Id: <20200201152851.82867-2-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-01_03:2020-01-31,2020-02-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 bulkscore=0 priorityscore=1501 mlxscore=0 suspectscore=1 malwarescore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1911200001 definitions=main-2002010113 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Let's remove a lot of badly formatted code by introducing the wait_for_flag() and set_flag functions. Also let's remove some stray spaces and always set the tesflag before using it. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth Reviewed-by: Cornelia Huck Reviewed-by: David Hildenbrand --- s390x/smp.c | 55 ++++++++++++++++++++++++++++++++--------------------- 1 file changed, 33 insertions(+), 22 deletions(-) diff --git a/s390x/smp.c b/s390x/smp.c index ab7e46c..e37eb56 100644 --- a/s390x/smp.c +++ b/s390x/smp.c @@ -22,6 +22,19 @@ static int testflag = 0; +static void wait_for_flag(void) +{ + while (!testflag) + mb(); +} + +static void set_flag(int val) +{ + mb(); + testflag = val; + mb(); +} + static void cpu_loop(void) { for (;;) {} @@ -29,21 +42,19 @@ static void cpu_loop(void) static void test_func(void) { - testflag = 1; - mb(); + set_flag(1); cpu_loop(); } static void test_start(void) { struct psw psw; - psw.mask = extract_psw_mask(); + psw.mask = extract_psw_mask(); psw.addr = (unsigned long)test_func; + set_flag(0); smp_cpu_setup(1, psw); - while (!testflag) { - mb(); - } + wait_for_flag(); report(1, "start"); } @@ -112,27 +123,27 @@ static void ecall(void) mask = extract_psw_mask(); mask |= PSW_MASK_EXT; load_psw_mask(mask); - testflag = 1; + set_flag(1); while (lc->ext_int_code != 0x1202) { mb(); } report(1, "ecall"); - testflag= 1; + set_flag(1); } static void test_ecall(void) { struct psw psw; - psw.mask = extract_psw_mask(); + psw.mask = extract_psw_mask(); psw.addr = (unsigned long)ecall; report_prefix_push("ecall"); - testflag= 0; + set_flag(0); smp_cpu_destroy(1); smp_cpu_setup(1, psw); - while (!testflag) { mb(); } - testflag= 0; + wait_for_flag(); + set_flag(0); sigp(1, SIGP_EXTERNAL_CALL, 0, NULL); - while(!testflag) {mb();} + wait_for_flag(); smp_cpu_stop(1); report_prefix_pop(); } @@ -147,27 +158,27 @@ static void emcall(void) mask = extract_psw_mask(); mask |= PSW_MASK_EXT; load_psw_mask(mask); - testflag= 1; + set_flag(1); while (lc->ext_int_code != 0x1201) { mb(); } report(1, "ecall"); - testflag = 1; + set_flag(1); } static void test_emcall(void) { struct psw psw; - psw.mask = extract_psw_mask(); + psw.mask = extract_psw_mask(); psw.addr = (unsigned long)emcall; report_prefix_push("emcall"); - testflag= 0; + set_flag(0); smp_cpu_destroy(1); smp_cpu_setup(1, psw); - while (!testflag) { mb(); } - testflag= 0; + wait_for_flag(); + set_flag(0); sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL); - while(!testflag) { mb(); } + wait_for_flag(); smp_cpu_stop(1); report_prefix_pop(); } @@ -177,7 +188,7 @@ static void test_reset_initial(void) struct cpu_status *status = alloc_pages(0); struct psw psw; - psw.mask = extract_psw_mask(); + psw.mask = extract_psw_mask(); psw.addr = (unsigned long)test_func; report_prefix_push("reset initial"); @@ -208,7 +219,7 @@ static void test_reset(void) { struct psw psw; - psw.mask = extract_psw_mask(); + psw.mask = extract_psw_mask(); psw.addr = (unsigned long)test_func; report_prefix_push("cpu reset");