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From: Knut Omang <knut.omang@oracle.com>
To: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org,
	Shuah Khan <shuah@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Michal Marek <michal.lkml@markovi.net>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Shreyans Devendra Doshi <0xinfosect0r@gmail.com>,
	Alan Maguire <alan.maguire@oracle.com>,
	Brendan Higgins <brendanhiggins@google.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Hidenori Yamaji <hidenori.yamaji@sony.com>,
	Frank Rowand <frowand.list@gmail.com>,
	Timothy Bird <Tim.Bird@sony.com>,
	Luis Chamberlain <mcgrof@kernel.org>,
	"Theodore Ts'o" <tytso@mit.edu>, Daniel Vetter <daniel@ffwll.ch>,
	Stephen Boyd <sboyd@kernel.org>,
	Knut Omang <knut.omang@oracle.com>
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> (raw)
In-Reply-To: <cover.92d76bb4f6dcedc971d0b72a49e8e459a98bca54.1565676440.git-series.knut.omang@oracle.com>

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 <knut.omang@oracle.com>
---
 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 <stdlib.h>
+
+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 <knut.omang@oracle.com>
+ *
+ * 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 <time.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+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
-- 
git-series 0.9.1

  parent reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-13  6:09 [RFC 00/19] Integration of Kernel Test Framework (KTF) into the kernel tree Knut Omang
2019-08-13  6:09 ` [RFC 01/19] kbuild: Fixes to rules for host-cshlib and host-cxxshlib Knut Omang
2019-08-13 14:01   ` Masahiro Yamada
2019-08-13 16:19     ` Knut Omang
2019-08-14  2:02       ` Masahiro Yamada
2019-08-14  5:50         ` Knut Omang
2019-08-14  5:52         ` Knut Omang
2019-08-14 12:52           ` Knut Omang
2019-08-21  1:47             ` Masahiro Yamada
2019-08-21  4:03               ` Knut Omang
2019-08-13  6:09 ` [RFC 02/19] ktf: Introduce the main part of the kernel side of ktf Knut Omang
2019-09-09  1:23   ` Brendan Higgins
2019-09-10  6:15     ` Knut Omang
2019-08-13  6:09 ` [RFC 03/19] ktf: Introduce a generic netlink protocol for test result communication Knut Omang
2019-09-09  1:28   ` Brendan Higgins
2019-09-10  6:30     ` Knut Omang
2019-08-13  6:09 ` [RFC 04/19] ktf: An implementation of a generic associative array container Knut Omang
2019-08-13  6:09 ` [RFC 05/19] ktf: Implementation of ktf support for overriding function entry and return Knut Omang
2019-08-13  6:09 ` [RFC 06/19] ktf: A simple debugfs interface to test results Knut Omang
2019-08-13  8:21   ` Greg Kroah-Hartman
2019-08-14 17:17     ` Knut Omang
2019-08-15  8:49       ` Greg Kroah-Hartman
2019-08-15 10:35         ` Knut Omang
2019-08-15 10:52           ` Greg Kroah-Hartman
2019-08-13  6:09 ` [RFC 07/19] ktf: Simple coverage support Knut Omang
2019-08-13  6:09 ` [RFC 08/19] ktf: Configurable context support for network info setup Knut Omang
2019-08-13  6:09 ` [RFC 09/19] ktf: resolve: A helper utility to aid in exposing private kernel symbols to KTF tests Knut Omang
2019-08-13  6:09 ` [RFC 10/19] ktf: Add documentation for Kernel Test Framework (KTF) Knut Omang
2019-08-13  6:09 ` [RFC 11/19] ktf: Add a small test suite with a few tests to test KTF itself Knut Omang
2019-08-13  6:09 ` [RFC 12/19] ktf: Main part of user land library for executing tests Knut Omang
2019-08-13  6:09 ` [RFC 13/19] ktf: Integration logic for running ktf tests from googletest Knut Omang
2019-08-13  6:09 ` Knut Omang [this message]
2019-08-13  6:09 ` [RFC 15/19] ktf: Some simple examples Knut Omang
2019-08-13  6:09 ` [RFC 16/19] ktf: Some user applications to run tests Knut Omang
2019-08-13  6:09 ` [RFC 17/19] ktf: Toplevel ktf Makefile/makefile includes and scripts to run from kselftest Knut Omang
2019-08-13  6:09 ` [RFC 18/19] kselftests: Enable building ktf Knut Omang
2019-08-13  6:09 ` [RFC 19/19] Documentation/dev-tools: Add index entry for KTF documentation Knut Omang
2019-08-13  8:10 ` [RFC 00/19] Integration of Kernel Test Framework (KTF) into the kernel tree Brendan Higgins
2019-08-13  8:17 ` Brendan Higgins
2019-08-13 11:29   ` Knut Omang
2019-08-13 17:50     ` Brendan Higgins
2019-08-13  8:23 ` Greg Kroah-Hartman
2019-08-13  9:51   ` Knut Omang
2019-08-13 17:02     ` Brendan Higgins

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