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Tue, 13 Aug 2019 06:11:44 +0000 Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x7D6Bif7013702; Tue, 13 Aug 2019 06:11:44 GMT Received: from abi.no.oracle.com (/10.172.144.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 12 Aug 2019 23:11:43 -0700 From: Knut Omang To: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, Shuah Khan , Jonathan Corbet , Masahiro Yamada , Michal Marek , Greg Kroah-Hartman , Shreyans Devendra Doshi <0xinfosect0r@gmail.com>, Alan Maguire , Brendan Higgins , Kevin Hilman , Hidenori Yamaji , Frank Rowand , Timothy Bird , Luis Chamberlain , "Theodore Ts'o" , Daniel Vetter , Stephen Boyd , Knut Omang Subject: [RFC 14/19] ktf: Internal debugging facilities Date: Tue, 13 Aug 2019 08:09:29 +0200 Message-Id: <2e0a915bf97d241eced54efa540c9a11a1996c27.1565676440.git-series.knut.omang@oracle.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9347 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908130067 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9347 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908130067 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Utilities for convenient and runtime enabled/disabled printk debugging mainly intended for debugging ktf itself and subtle early issues with execution/running of tests. ktf_debug.h: User mode debug function definitions Signed-off-by: Knut Omang --- tools/testing/selftests/ktf/lib/ktf_debug.cc | 20 +++++++- tools/testing/selftests/ktf/lib/ktf_debug.h | 59 +++++++++++++++++++++- 2 files changed, 79 insertions(+) create mode 100644 tools/testing/selftests/ktf/lib/ktf_debug.cc create mode 100644 tools/testing/selftests/ktf/lib/ktf_debug.h diff --git a/tools/testing/selftests/ktf/lib/ktf_debug.cc b/tools/testing/selftests/ktf/lib/ktf_debug.cc new file mode 100644 index 0000000..18ff443 --- /dev/null +++ b/tools/testing/selftests/ktf/lib/ktf_debug.cc @@ -0,0 +1,20 @@ +/* Copyright (c) 2012 Oracle Corporation. All rights reserved + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include "ktf_debug.h" +#include + +unsigned long ktf_debug_mask = 0; + + +void ktf_debug_init() +{ + ktf_debug_mask = 0; + char* dbg_mask_str = getenv("KTF_DEBUG_MASK"); + if (dbg_mask_str) { + ktf_debug_mask = strtol(dbg_mask_str, NULL, 0); + log(KTF_INFO_V, "debug mask set to 0x%lx\n", ktf_debug_mask); + } +} diff --git a/tools/testing/selftests/ktf/lib/ktf_debug.h b/tools/testing/selftests/ktf/lib/ktf_debug.h new file mode 100644 index 0000000..dc761a4 --- /dev/null +++ b/tools/testing/selftests/ktf/lib/ktf_debug.h @@ -0,0 +1,59 @@ +/* Copyright (c) 2012 Oracle Corporation. All rights reserved + * Author: Knut Omang + * + * SPDX-License-Identifier: GPL-2.0 + * + * ktf_debug.h: User mode debug function definitions + * - intended for test debugging. + * + * Enabled by setting bits in the environment variable KTF_DEBUG_MASK + */ + +#ifndef _KTF_DEBUG_H +#define _KTF_DEBUG_H +#include +#include +#include +#include +#include +#include + +extern unsigned long ktf_debug_mask; + + +#define KTF_ERR 0x1 +#define KTF_WARN 0x2 +#define KTF_INFO 0x4 +#define KTF_INFO_V 0x100 +#define KTF_MR 0x2000 +#define KTF_DEBUG 0x10000 +#define KTF_POLL 0x20000 +#define KTF_EVENT 0x40000 +#define KTF_DEBUG_V 0x1000000 +#define KTF_DUMP 0x2000000 + +/* Call this to initialize the debug logic from + * environment KTF_DEBUG_MASK + */ +void ktf_debug_init(); + +#define log(level, format, arg...) \ +do {\ + if (level & ktf_debug_mask) {\ + char _tm[30]; \ + time_t _tv = time(NULL);\ + ctime_r(&_tv,_tm);\ + _tm[24] = '\0';\ + fprintf(stderr, "%s [%ld] %s: " format, \ + _tm, (long unsigned int) pthread_self(), __func__, ## arg); \ + }\ +} while (0) + +#define logs(class, stmt_list) \ + do { \ + if (ktf_debug_mask & class) { \ + stmt_list; \ + } \ + } while (0) + +#endif