From db758d11a182e40d01d6ebe3ddf110ba614e6d63 Mon Sep 17 00:00:00 2001
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 11 May 2016 10:10:17 -0400
Subject: [PATCH] Test clock override plugin

Fixes: #939

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---
 Makefile                                     |  1 +
 probes/Kbuild                                |  2 -
 tests/clock-plugin/lttng-clock-plugin-test.c | 81 ++++++++++++++++++++
 {probes => tests/probes}/lttng-test.c        |  0
 4 files changed, 82 insertions(+), 2 deletions(-)
 create mode 100644 tests/clock-plugin/lttng-clock-plugin-test.c
 rename {probes => tests/probes}/lttng-test.c (100%)

diff --git a/Makefile b/Makefile
index c0b562a6..c2b12132 100644
--- a/Makefile
+++ b/Makefile
@@ -92,6 +92,7 @@ ifneq ($(KERNELRELEASE),)
 
   obj-$(CONFIG_LTTNG) += probes/
   obj-$(CONFIG_LTTNG) += lib/
+  obj-$(CONFIG_LTTNG) += tests/
 
 else # KERNELRELEASE
 
diff --git a/probes/Kbuild b/probes/Kbuild
index 90e9805c..8ae9a6bb 100644
--- a/probes/Kbuild
+++ b/probes/Kbuild
@@ -261,6 +261,4 @@ ifneq ($(CONFIG_DYNAMIC_FTRACE),)
   obj-$(CONFIG_LTTNG) += lttng-ftrace.o
 endif # CONFIG_DYNAMIC_FTRACE
 
-obj-$(CONFIG_LTTNG) += lttng-test.o
-
 # vim:syntax=make
diff --git a/tests/clock-plugin/lttng-clock-plugin-test.c b/tests/clock-plugin/lttng-clock-plugin-test.c
new file mode 100644
index 00000000..f16ea645
--- /dev/null
+++ b/tests/clock-plugin/lttng-clock-plugin-test.c
@@ -0,0 +1,81 @@
+/*
+ * lttng-clock-plugin-test.c
+ *
+ * Copyright (C) 2014, 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/ktime.h>
+#include <linux/hrtimer.h>
+#include <linux/time.h>
+
+#include <lttng-clock.h>	/* From lttng-modules */
+
+static u64 trace_clock_read64_example(void)
+{
+	/* Freeze time. */
+	return 0;
+}
+
+static u64 trace_clock_freq_example(void)
+{
+	return 1000;	/* 1KHz */
+}
+
+static int trace_clock_uuid_example(char *uuid)
+{
+	const char myuuid[] = "83c63deb-7aa4-48fb-abda-946f400d76e6";
+	memcpy(uuid, myuuid, LTTNG_MODULES_UUID_STR_LEN);
+	return 0;
+}
+
+static const char *trace_clock_name_example(void)
+{
+	return "lttng_test_clock_override";
+}
+
+static const char *trace_clock_description_example(void)
+{
+	return "Freeze time with 1KHz for regression test";
+}
+
+static
+struct lttng_trace_clock ltc = {
+	.read64 = trace_clock_read64_example,
+	.freq = trace_clock_freq_example,
+	.uuid = trace_clock_uuid_example,
+	.name = trace_clock_name_example,
+	.description = trace_clock_description_example,
+};
+
+static __init
+int lttng_clock_plugin_init(void)
+{
+	return lttng_clock_register_plugin(&ltc, THIS_MODULE);
+}
+module_init(lttng_clock_plugin_init);
+
+static __exit
+void lttng_clock_plugin_exit(void)
+{
+	lttng_clock_unregister_plugin(&ltc, THIS_MODULE);
+}
+module_exit(lttng_clock_plugin_exit);
+
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
+MODULE_DESCRIPTION("LTTng Clock Plugin Example");
diff --git a/probes/lttng-test.c b/tests/probes/lttng-test.c
similarity index 100%
rename from probes/lttng-test.c
rename to tests/probes/lttng-test.c
-- 
2.34.1