Test clock override plugin
authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Wed, 11 May 2016 14:10:17 +0000 (10:10 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Wed, 11 May 2016 17:14:14 +0000 (13:14 -0400)
Fixes: #939
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Makefile
probes/Kbuild
probes/lttng-test.c [deleted file]
tests/clock-plugin/lttng-clock-plugin-test.c [new file with mode: 0644]
tests/probes/lttng-test.c [new file with mode: 0644]

index c0b562a602f7fd6fc3d070f29ceafeed36b8ca53..c2b12132dab6fa69ded50b4ae91be0d9252d2a7d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -92,6 +92,7 @@ ifneq ($(KERNELRELEASE),)
 
   obj-$(CONFIG_LTTNG) += probes/
   obj-$(CONFIG_LTTNG) += lib/
+  obj-$(CONFIG_LTTNG) += tests/
 
 else # KERNELRELEASE
 
index 90e9805ce41215f678f706a478b853855e7913d1..8ae9a6bb286c08043901ba7cc9e69c4bcf651ed0 100644 (file)
@@ -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/probes/lttng-test.c b/probes/lttng-test.c
deleted file mode 100644 (file)
index 54be4c7..0000000
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * lttng-test.c
- *
- * Linux Trace Toolkit Next Generation Test Module
- *
- * Copyright 2015 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/init.h>
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/byteorder/generic.h>
-
-#include <lttng-events.h>
-#include <lttng-tracer.h>
-#include <wrapper/tracepoint.h>
-#include <wrapper/kstrtox.h>
-
-#define TP_MODULE_NOAUTOLOAD
-#define LTTNG_PACKAGE_BUILD
-#define CREATE_TRACE_POINTS
-#define TRACE_INCLUDE_PATH instrumentation/events/lttng-module
-#define TRACE_INCLUDE_FILE lttng-test
-#define LTTNG_INSTRUMENTATION
-#include <instrumentation/events/lttng-module/lttng-test.h>
-
-DEFINE_TRACE(lttng_test_filter_event);
-
-#define LTTNG_TEST_FILTER_EVENT_FILE   "lttng-test-filter-event"
-
-#define LTTNG_WRITE_COUNT_MAX  64
-
-static struct proc_dir_entry *lttng_test_filter_event_dentry;
-
-static
-void trace_test_event(unsigned int nr_iter)
-{
-       int i, netint;
-       long values[] = { 1, 2, 3 };
-       char text[10] = "test";
-       char escape[10] = "\\*";
-
-       for (i = 0; i < nr_iter; i++) {
-               netint = htonl(i);
-               trace_lttng_test_filter_event(i, netint, values, text, strlen(text), escape);
-       }
-}
-
-/**
- * lttng_filter_event_write - trigger a lttng_test_filter_event
- * @file: file pointer
- * @user_buf: user string
- * @count: length to copy
- *
- * Return -1 on error, with EFAULT errno. Returns count on success.
- */
-static
-ssize_t lttng_test_filter_event_write(struct file *file, const char __user *user_buf,
-                   size_t count, loff_t *ppos)
-{
-       unsigned int nr_iter;
-       ssize_t written;
-       int ret;
-
-       /* Get the number of iterations */
-       ret = lttng_kstrtouint_from_user(user_buf, count, 10, &nr_iter);
-       if (ret) {
-               written = ret;
-               goto end;
-       }
-       /* Trace the event */
-       trace_test_event(nr_iter);
-       written = count;
-       *ppos += written;
-end:
-       return written;
-}
-
-static const struct file_operations lttng_test_filter_event_operations = {
-       .write = lttng_test_filter_event_write,
-};
-
-static
-int __init lttng_test_init(void)
-{
-       int ret = 0;
-
-       (void) wrapper_lttng_fixup_sig(THIS_MODULE);
-       wrapper_vmalloc_sync_all();
-       lttng_test_filter_event_dentry =
-                       proc_create_data(LTTNG_TEST_FILTER_EVENT_FILE,
-                               S_IRUGO | S_IWUGO, NULL,
-                               &lttng_test_filter_event_operations, NULL);
-       if (!lttng_test_filter_event_dentry) {
-               printk(KERN_ERR "Error creating LTTng test filter file\n");
-               ret = -ENOMEM;
-               goto error;
-       }
-       ret = __lttng_events_init__lttng_test();
-       if (ret)
-               goto error_events;
-       return ret;
-
-error_events:
-       remove_proc_entry(LTTNG_TEST_FILTER_EVENT_FILE, NULL);
-error:
-       return ret;
-}
-
-module_init(lttng_test_init);
-
-static
-void __exit lttng_test_exit(void)
-{
-       __lttng_events_exit__lttng_test();
-       if (lttng_test_filter_event_dentry)
-               remove_proc_entry(LTTNG_TEST_FILTER_EVENT_FILE, NULL);
-}
-
-module_exit(lttng_test_exit);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
-MODULE_DESCRIPTION("LTTng Test");
-MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
-       __stringify(LTTNG_MODULES_MINOR_VERSION) "."
-       __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
-       LTTNG_MODULES_EXTRAVERSION);
diff --git a/tests/clock-plugin/lttng-clock-plugin-test.c b/tests/clock-plugin/lttng-clock-plugin-test.c
new file mode 100644 (file)
index 0000000..f16ea64
--- /dev/null
@@ -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/tests/probes/lttng-test.c b/tests/probes/lttng-test.c
new file mode 100644 (file)
index 0000000..54be4c7
--- /dev/null
@@ -0,0 +1,142 @@
+/*
+ * lttng-test.c
+ *
+ * Linux Trace Toolkit Next Generation Test Module
+ *
+ * Copyright 2015 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/init.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/byteorder/generic.h>
+
+#include <lttng-events.h>
+#include <lttng-tracer.h>
+#include <wrapper/tracepoint.h>
+#include <wrapper/kstrtox.h>
+
+#define TP_MODULE_NOAUTOLOAD
+#define LTTNG_PACKAGE_BUILD
+#define CREATE_TRACE_POINTS
+#define TRACE_INCLUDE_PATH instrumentation/events/lttng-module
+#define TRACE_INCLUDE_FILE lttng-test
+#define LTTNG_INSTRUMENTATION
+#include <instrumentation/events/lttng-module/lttng-test.h>
+
+DEFINE_TRACE(lttng_test_filter_event);
+
+#define LTTNG_TEST_FILTER_EVENT_FILE   "lttng-test-filter-event"
+
+#define LTTNG_WRITE_COUNT_MAX  64
+
+static struct proc_dir_entry *lttng_test_filter_event_dentry;
+
+static
+void trace_test_event(unsigned int nr_iter)
+{
+       int i, netint;
+       long values[] = { 1, 2, 3 };
+       char text[10] = "test";
+       char escape[10] = "\\*";
+
+       for (i = 0; i < nr_iter; i++) {
+               netint = htonl(i);
+               trace_lttng_test_filter_event(i, netint, values, text, strlen(text), escape);
+       }
+}
+
+/**
+ * lttng_filter_event_write - trigger a lttng_test_filter_event
+ * @file: file pointer
+ * @user_buf: user string
+ * @count: length to copy
+ *
+ * Return -1 on error, with EFAULT errno. Returns count on success.
+ */
+static
+ssize_t lttng_test_filter_event_write(struct file *file, const char __user *user_buf,
+                   size_t count, loff_t *ppos)
+{
+       unsigned int nr_iter;
+       ssize_t written;
+       int ret;
+
+       /* Get the number of iterations */
+       ret = lttng_kstrtouint_from_user(user_buf, count, 10, &nr_iter);
+       if (ret) {
+               written = ret;
+               goto end;
+       }
+       /* Trace the event */
+       trace_test_event(nr_iter);
+       written = count;
+       *ppos += written;
+end:
+       return written;
+}
+
+static const struct file_operations lttng_test_filter_event_operations = {
+       .write = lttng_test_filter_event_write,
+};
+
+static
+int __init lttng_test_init(void)
+{
+       int ret = 0;
+
+       (void) wrapper_lttng_fixup_sig(THIS_MODULE);
+       wrapper_vmalloc_sync_all();
+       lttng_test_filter_event_dentry =
+                       proc_create_data(LTTNG_TEST_FILTER_EVENT_FILE,
+                               S_IRUGO | S_IWUGO, NULL,
+                               &lttng_test_filter_event_operations, NULL);
+       if (!lttng_test_filter_event_dentry) {
+               printk(KERN_ERR "Error creating LTTng test filter file\n");
+               ret = -ENOMEM;
+               goto error;
+       }
+       ret = __lttng_events_init__lttng_test();
+       if (ret)
+               goto error_events;
+       return ret;
+
+error_events:
+       remove_proc_entry(LTTNG_TEST_FILTER_EVENT_FILE, NULL);
+error:
+       return ret;
+}
+
+module_init(lttng_test_init);
+
+static
+void __exit lttng_test_exit(void)
+{
+       __lttng_events_exit__lttng_test();
+       if (lttng_test_filter_event_dentry)
+               remove_proc_entry(LTTNG_TEST_FILTER_EVENT_FILE, NULL);
+}
+
+module_exit(lttng_test_exit);
+
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@efficios.com>");
+MODULE_DESCRIPTION("LTTng Test");
+MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
+       __stringify(LTTNG_MODULES_MINOR_VERSION) "."
+       __stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
+       LTTNG_MODULES_EXTRAVERSION);
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