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Subject[patch 10/10] Move samples to instrumentation/samples
Move the markers samples to instrumentation/samples.

Was previously built late in the kernel build, but is now built at the same time
as instrumentation/ (core-y).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Sam Ravnborg <sam@ravnborg.org>
CC: Randy Dunlap <rdunlap@xenotime.net>
---
Makefile | 3
instrumentation/Kconfig | 6 +
instrumentation/Makefile | 2
instrumentation/samples/Makefile | 4 +
instrumentation/samples/marker-example.c | 54 +++++++++++++++++
instrumentation/samples/probe-example.c | 98 +++++++++++++++++++++++++++++++
lib/Kconfig.debug | 2
samples/Kconfig | 16 -----
samples/Makefile | 3
samples/markers/Makefile | 4 -
samples/markers/marker-example.c | 54 -----------------
samples/markers/probe-example.c | 98 -------------------------------
12 files changed, 164 insertions(+), 180 deletions(-)

Index: linux-2.6-lttng.stable/instrumentation/Kconfig
===================================================================
--- linux-2.6-lttng.stable.orig/instrumentation/Kconfig 2007-10-29 10:01:09.000000000 -0400
+++ linux-2.6-lttng.stable/instrumentation/Kconfig 2007-10-29 10:03:18.000000000 -0400
@@ -59,4 +59,10 @@ config BLK_DEV_IO_TRACE

git://brick.kernel.dk/data/git/blktrace.git

+config SAMPLE_MARKERS
+ tristate "Build markers examples -- loadable modules only"
+ depends on MARKERS && m
+ help
+ This build markers example modules.
+
endif # INSTRUMENTATION
Index: linux-2.6-lttng.stable/samples/Kconfig
===================================================================
--- linux-2.6-lttng.stable.orig/samples/Kconfig 2007-10-29 10:01:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,16 +0,0 @@
-# samples/Kconfig
-
-menuconfig SAMPLES
- bool "Sample kernel code"
- help
- You can build and test sample kernel code here.
-
-if SAMPLES
-
-config SAMPLE_MARKERS
- tristate "Build markers examples -- loadable modules only"
- depends on MARKERS && m
- help
- This build markers example modules.
-
-endif # SAMPLES
Index: linux-2.6-lttng.stable/instrumentation/Makefile
===================================================================
--- linux-2.6-lttng.stable.orig/instrumentation/Makefile 2007-10-29 10:03:14.000000000 -0400
+++ linux-2.6-lttng.stable/instrumentation/Makefile 2007-10-29 10:03:18.000000000 -0400
@@ -11,3 +11,5 @@ ifeq ($(CONFIG_PROC_FS),y)
obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
endif
obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
+
+obj-y += samples/
Index: linux-2.6-lttng.stable/instrumentation/samples/Makefile
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6-lttng.stable/instrumentation/samples/Makefile 2007-10-29 10:17:36.000000000 -0400
@@ -0,0 +1,4 @@
+# builds the kprobes example kernel modules;
+# then to use one (as root): insmod <module_name.ko>
+
+obj-$(CONFIG_SAMPLE_MARKERS) += probe-example.o marker-example.o
Index: linux-2.6-lttng.stable/samples/Makefile
===================================================================
--- linux-2.6-lttng.stable.orig/samples/Makefile 2007-10-29 10:01:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,3 +0,0 @@
-# Makefile for Linux samples code
-
-obj-$(CONFIG_SAMPLES) += markers/
Index: linux-2.6-lttng.stable/samples/markers/marker-example.c
===================================================================
--- linux-2.6-lttng.stable.orig/samples/markers/marker-example.c 2007-10-29 10:01:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,54 +0,0 @@
-/* marker-example.c
- *
- * Executes a marker when /proc/marker-example is opened.
- *
- * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- *
- * This file is released under the GPLv2.
- * See the file COPYING for more details.
- */
-
-#include <linux/module.h>
-#include <linux/marker.h>
-#include <linux/sched.h>
-#include <linux/proc_fs.h>
-
-struct proc_dir_entry *pentry_example;
-
-static int my_open(struct inode *inode, struct file *file)
-{
- int i;
-
- trace_mark(subsystem_event, "%d %s", 123, "example string");
- for (i = 0; i < 10; i++)
- trace_mark(subsystem_eventb, MARK_NOARGS);
- return -EPERM;
-}
-
-static struct file_operations mark_ops = {
- .open = my_open,
-};
-
-static int example_init(void)
-{
- printk(KERN_ALERT "example init\n");
- pentry_example = create_proc_entry("marker-example", 0444, NULL);
- if (pentry_example)
- pentry_example->proc_fops = &mark_ops;
- else
- return -EPERM;
- return 0;
-}
-
-static void example_exit(void)
-{
- printk(KERN_ALERT "example exit\n");
- remove_proc_entry("marker-example", NULL);
-}
-
-module_init(example_init)
-module_exit(example_exit)
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Marker example");
Index: linux-2.6-lttng.stable/samples/markers/probe-example.c
===================================================================
--- linux-2.6-lttng.stable.orig/samples/markers/probe-example.c 2007-10-29 10:01:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,98 +0,0 @@
-/* probe-example.c
- *
- * Connects two functions to marker call sites.
- *
- * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- *
- * This file is released under the GPLv2.
- * See the file COPYING for more details.
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/marker.h>
-#include <asm/atomic.h>
-
-struct probe_data {
- const char *name;
- const char *format;
- marker_probe_func *probe_func;
-};
-
-void probe_subsystem_event(const struct marker *mdata, void *private,
- const char *format, ...)
-{
- va_list ap;
- /* Declare args */
- unsigned int value;
- const char *mystr;
-
- /* Assign args */
- va_start(ap, format);
- value = va_arg(ap, typeof(value));
- mystr = va_arg(ap, typeof(mystr));
-
- /* Call printk */
- printk(KERN_DEBUG "Value %u, string %s\n", value, mystr);
-
- /* or count, check rights, serialize data in a buffer */
-
- va_end(ap);
-}
-
-atomic_t eventb_count = ATOMIC_INIT(0);
-
-void probe_subsystem_eventb(const struct marker *mdata, void *private,
- const char *format, ...)
-{
- /* Increment counter */
- atomic_inc(&eventb_count);
-}
-
-static struct probe_data probe_array[] =
-{
- { .name = "subsystem_event",
- .format = "%d %s",
- .probe_func = probe_subsystem_event },
- { .name = "subsystem_eventb",
- .format = MARK_NOARGS,
- .probe_func = probe_subsystem_eventb },
-};
-
-static int __init probe_init(void)
-{
- int result;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(probe_array); i++) {
- result = marker_probe_register(probe_array[i].name,
- probe_array[i].format,
- probe_array[i].probe_func, &probe_array[i]);
- if (result)
- printk(KERN_INFO "Unable to register probe %s\n",
- probe_array[i].name);
- result = marker_arm(probe_array[i].name);
- if (result)
- printk(KERN_INFO "Unable to arm probe %s\n",
- probe_array[i].name);
- }
- return 0;
-}
-
-static void __exit probe_fini(void)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(probe_array); i++)
- marker_probe_unregister(probe_array[i].name);
- printk(KERN_INFO "Number of event b : %u\n",
- atomic_read(&eventb_count));
-}
-
-module_init(probe_init);
-module_exit(probe_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("SUBSYSTEM Probe");
Index: linux-2.6-lttng.stable/lib/Kconfig.debug
===================================================================
--- linux-2.6-lttng.stable.orig/lib/Kconfig.debug 2007-10-29 10:03:13.000000000 -0400
+++ linux-2.6-lttng.stable/lib/Kconfig.debug 2007-10-29 10:03:18.000000000 -0400
@@ -508,5 +508,3 @@ config FAULT_INJECTION_STACKTRACE_FILTER
select FRAME_POINTER
help
Provide stacktrace filter for fault-injection capabilities
-
-source "samples/Kconfig"
Index: linux-2.6-lttng.stable/Makefile
===================================================================
--- linux-2.6-lttng.stable.orig/Makefile 2007-10-29 10:01:09.000000000 -0400
+++ linux-2.6-lttng.stable/Makefile 2007-10-29 10:03:18.000000000 -0400
@@ -775,9 +775,6 @@ vmlinux: $(vmlinux-lds) $(vmlinux-init)
ifdef CONFIG_HEADERS_CHECK
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
endif
-ifdef CONFIG_SAMPLES
- $(Q)$(MAKE) $(build)=samples
-endif
$(call vmlinux-modpost)
$(call if_changed_rule,vmlinux__)
$(Q)rm -f .old_version
Index: linux-2.6-lttng.stable/samples/markers/Makefile
===================================================================
--- linux-2.6-lttng.stable.orig/samples/markers/Makefile 2007-10-29 10:01:09.000000000 -0400
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,4 +0,0 @@
-# builds the kprobes example kernel modules;
-# then to use one (as root): insmod <module_name.ko>
-
-obj-$(CONFIG_SAMPLE_MARKERS) += probe-example.o marker-example.o
Index: linux-2.6-lttng.stable/instrumentation/samples/marker-example.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6-lttng.stable/instrumentation/samples/marker-example.c 2007-10-29 10:03:18.000000000 -0400
@@ -0,0 +1,54 @@
+/* marker-example.c
+ *
+ * Executes a marker when /proc/marker-example is opened.
+ *
+ * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * This file is released under the GPLv2.
+ * See the file COPYING for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/marker.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+
+struct proc_dir_entry *pentry_example;
+
+static int my_open(struct inode *inode, struct file *file)
+{
+ int i;
+
+ trace_mark(subsystem_event, "%d %s", 123, "example string");
+ for (i = 0; i < 10; i++)
+ trace_mark(subsystem_eventb, MARK_NOARGS);
+ return -EPERM;
+}
+
+static struct file_operations mark_ops = {
+ .open = my_open,
+};
+
+static int example_init(void)
+{
+ printk(KERN_ALERT "example init\n");
+ pentry_example = create_proc_entry("marker-example", 0444, NULL);
+ if (pentry_example)
+ pentry_example->proc_fops = &mark_ops;
+ else
+ return -EPERM;
+ return 0;
+}
+
+static void example_exit(void)
+{
+ printk(KERN_ALERT "example exit\n");
+ remove_proc_entry("marker-example", NULL);
+}
+
+module_init(example_init)
+module_exit(example_exit)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("Marker example");
Index: linux-2.6-lttng.stable/instrumentation/samples/probe-example.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6-lttng.stable/instrumentation/samples/probe-example.c 2007-10-29 10:03:18.000000000 -0400
@@ -0,0 +1,98 @@
+/* probe-example.c
+ *
+ * Connects two functions to marker call sites.
+ *
+ * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * This file is released under the GPLv2.
+ * See the file COPYING for more details.
+ */
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/marker.h>
+#include <asm/atomic.h>
+
+struct probe_data {
+ const char *name;
+ const char *format;
+ marker_probe_func *probe_func;
+};
+
+void probe_subsystem_event(const struct marker *mdata, void *private,
+ const char *format, ...)
+{
+ va_list ap;
+ /* Declare args */
+ unsigned int value;
+ const char *mystr;
+
+ /* Assign args */
+ va_start(ap, format);
+ value = va_arg(ap, typeof(value));
+ mystr = va_arg(ap, typeof(mystr));
+
+ /* Call printk */
+ printk(KERN_DEBUG "Value %u, string %s\n", value, mystr);
+
+ /* or count, check rights, serialize data in a buffer */
+
+ va_end(ap);
+}
+
+atomic_t eventb_count = ATOMIC_INIT(0);
+
+void probe_subsystem_eventb(const struct marker *mdata, void *private,
+ const char *format, ...)
+{
+ /* Increment counter */
+ atomic_inc(&eventb_count);
+}
+
+static struct probe_data probe_array[] =
+{
+ { .name = "subsystem_event",
+ .format = "%d %s",
+ .probe_func = probe_subsystem_event },
+ { .name = "subsystem_eventb",
+ .format = MARK_NOARGS,
+ .probe_func = probe_subsystem_eventb },
+};
+
+static int __init probe_init(void)
+{
+ int result;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(probe_array); i++) {
+ result = marker_probe_register(probe_array[i].name,
+ probe_array[i].format,
+ probe_array[i].probe_func, &probe_array[i]);
+ if (result)
+ printk(KERN_INFO "Unable to register probe %s\n",
+ probe_array[i].name);
+ result = marker_arm(probe_array[i].name);
+ if (result)
+ printk(KERN_INFO "Unable to arm probe %s\n",
+ probe_array[i].name);
+ }
+ return 0;
+}
+
+static void __exit probe_fini(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(probe_array); i++)
+ marker_probe_unregister(probe_array[i].name);
+ printk(KERN_INFO "Number of event b : %u\n",
+ atomic_read(&eventb_count));
+}
+
+module_init(probe_init);
+module_exit(probe_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("SUBSYSTEM Probe");
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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