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authorFrederic Weisbecker <fweisbec@gmail.com>2009-10-17 19:09:09 -0400
committerFrederic Weisbecker <fweisbec@gmail.com>2009-10-17 19:12:33 -0400
commit0f8f86c7bdd1c954fbe153af437a0d91a6c5721a (patch)
tree94a8d419a470a4f9852ca397bb9bbe48db92ff5c /samples
parentdca2d6ac09d9ef59ff46820d4f0c94b08a671202 (diff)
parentf39cdf25bf77219676ec5360980ac40b1a7e144a (diff)
Merge commit 'perf/core' into perf/hw-breakpoint
Conflicts: kernel/Makefile kernel/trace/Makefile kernel/trace/trace.h samples/Makefile Merge reason: We need to be uptodate with the perf events development branch because we plan to rewrite the breakpoints API on top of perf events.
Diffstat (limited to 'samples')
-rw-r--r--samples/Kconfig6
-rw-r--r--samples/Makefile4
-rw-r--r--samples/markers/Makefile4
-rw-r--r--samples/markers/marker-example.c53
-rw-r--r--samples/markers/probe-example.c92
-rw-r--r--samples/trace_events/trace-events-sample.h2
-rw-r--r--samples/tracepoints/tracepoint-sample.c2
7 files changed, 4 insertions, 159 deletions
diff --git a/samples/Kconfig b/samples/Kconfig
index 17d64ba7864c..e4be84ac3d38 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -7,12 +7,6 @@ menuconfig SAMPLES
7 7
8if SAMPLES 8if SAMPLES
9 9
10config SAMPLE_MARKERS
11 tristate "Build markers examples -- loadable modules only"
12 depends on MARKERS && m
13 help
14 This build markers example modules.
15
16config SAMPLE_TRACEPOINTS 10config SAMPLE_TRACEPOINTS
17 tristate "Build tracepoints examples -- loadable modules only" 11 tristate "Build tracepoints examples -- loadable modules only"
18 depends on TRACEPOINTS && m 12 depends on TRACEPOINTS && m
diff --git a/samples/Makefile b/samples/Makefile
index 42e175598777..0f15e6d77fd6 100644
--- a/samples/Makefile
+++ b/samples/Makefile
@@ -1,4 +1,4 @@
1# Makefile for Linux samples code 1# Makefile for Linux samples code
2 2
3obj-$(CONFIG_SAMPLES) += markers/ kobject/ kprobes/ tracepoints/ \ 3obj-$(CONFIG_SAMPLES) += kobject/ kprobes/ tracepoints/ trace_events/ \
4 trace_events/ hw_breakpoint/ 4 hw_breakpoint/
diff --git a/samples/markers/Makefile b/samples/markers/Makefile
deleted file mode 100644
index 6d7231265f0f..000000000000
--- a/samples/markers/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
1# builds the kprobes example kernel modules;
2# then to use one (as root): insmod <module_name.ko>
3
4obj-$(CONFIG_SAMPLE_MARKERS) += probe-example.o marker-example.o
diff --git a/samples/markers/marker-example.c b/samples/markers/marker-example.c
deleted file mode 100644
index e9cd9c0bc84f..000000000000
--- a/samples/markers/marker-example.c
+++ /dev/null
@@ -1,53 +0,0 @@
1/* marker-example.c
2 *
3 * Executes a marker when /proc/marker-example is opened.
4 *
5 * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
6 *
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
9 */
10
11#include <linux/module.h>
12#include <linux/marker.h>
13#include <linux/sched.h>
14#include <linux/proc_fs.h>
15
16struct proc_dir_entry *pentry_example;
17
18static int my_open(struct inode *inode, struct file *file)
19{
20 int i;
21
22 trace_mark(subsystem_event, "integer %d string %s", 123,
23 "example string");
24 for (i = 0; i < 10; i++)
25 trace_mark(subsystem_eventb, MARK_NOARGS);
26 return -EPERM;
27}
28
29static struct file_operations mark_ops = {
30 .open = my_open,
31};
32
33static int __init example_init(void)
34{
35 printk(KERN_ALERT "example init\n");
36 pentry_example = proc_create("marker-example", 0444, NULL, &mark_ops);
37 if (!pentry_example)
38 return -EPERM;
39 return 0;
40}
41
42static void __exit example_exit(void)
43{
44 printk(KERN_ALERT "example exit\n");
45 remove_proc_entry("marker-example", NULL);
46}
47
48module_init(example_init)
49module_exit(example_exit)
50
51MODULE_LICENSE("GPL");
52MODULE_AUTHOR("Mathieu Desnoyers");
53MODULE_DESCRIPTION("Marker example");
diff --git a/samples/markers/probe-example.c b/samples/markers/probe-example.c
deleted file mode 100644
index 2dfb3b32937e..000000000000
--- a/samples/markers/probe-example.c
+++ /dev/null
@@ -1,92 +0,0 @@
1/* probe-example.c
2 *
3 * Connects two functions to marker call sites.
4 *
5 * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
6 *
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
9 */
10
11#include <linux/sched.h>
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/marker.h>
15#include <asm/atomic.h>
16
17struct probe_data {
18 const char *name;
19 const char *format;
20 marker_probe_func *probe_func;
21};
22
23void probe_subsystem_event(void *probe_data, void *call_data,
24 const char *format, va_list *args)
25{
26 /* Declare args */
27 unsigned int value;
28 const char *mystr;
29
30 /* Assign args */
31 value = va_arg(*args, typeof(value));
32 mystr = va_arg(*args, typeof(mystr));
33
34 /* Call printk */
35 printk(KERN_INFO "Value %u, string %s\n", value, mystr);
36
37 /* or count, check rights, serialize data in a buffer */
38}
39
40atomic_t eventb_count = ATOMIC_INIT(0);
41
42void probe_subsystem_eventb(void *probe_data, void *call_data,
43 const char *format, va_list *args)
44{
45 /* Increment counter */
46 atomic_inc(&eventb_count);
47}
48
49static struct probe_data probe_array[] =
50{
51 { .name = "subsystem_event",
52 .format = "integer %d string %s",
53 .probe_func = probe_subsystem_event },
54 { .name = "subsystem_eventb",
55 .format = MARK_NOARGS,
56 .probe_func = probe_subsystem_eventb },
57};
58
59static int __init probe_init(void)
60{
61 int result;
62 int i;
63
64 for (i = 0; i < ARRAY_SIZE(probe_array); i++) {
65 result = marker_probe_register(probe_array[i].name,
66 probe_array[i].format,
67 probe_array[i].probe_func, &probe_array[i]);
68 if (result)
69 printk(KERN_INFO "Unable to register probe %s\n",
70 probe_array[i].name);
71 }
72 return 0;
73}
74
75static void __exit probe_fini(void)
76{
77 int i;
78
79 for (i = 0; i < ARRAY_SIZE(probe_array); i++)
80 marker_probe_unregister(probe_array[i].name,
81 probe_array[i].probe_func, &probe_array[i]);
82 printk(KERN_INFO "Number of event b : %u\n",
83 atomic_read(&eventb_count));
84 marker_synchronize_unregister();
85}
86
87module_init(probe_init);
88module_exit(probe_fini);
89
90MODULE_LICENSE("GPL");
91MODULE_AUTHOR("Mathieu Desnoyers");
92MODULE_DESCRIPTION("SUBSYSTEM Probe");
diff --git a/samples/trace_events/trace-events-sample.h b/samples/trace_events/trace-events-sample.h
index f24ae370e514..6af373236d73 100644
--- a/samples/trace_events/trace-events-sample.h
+++ b/samples/trace_events/trace-events-sample.h
@@ -1,6 +1,6 @@
1/* 1/*
2 * If TRACE_SYSTEM is defined, that will be the directory created 2 * If TRACE_SYSTEM is defined, that will be the directory created
3 * in the ftrace directory under /debugfs/tracing/events/<system> 3 * in the ftrace directory under /sys/kernel/debug/tracing/events/<system>
4 * 4 *
5 * The define_trace.h below will also look for a file name of 5 * The define_trace.h below will also look for a file name of
6 * TRACE_SYSTEM.h where TRACE_SYSTEM is what is defined here. 6 * TRACE_SYSTEM.h where TRACE_SYSTEM is what is defined here.
diff --git a/samples/tracepoints/tracepoint-sample.c b/samples/tracepoints/tracepoint-sample.c
index 9cf80a11e8b6..26fab33ffa8c 100644
--- a/samples/tracepoints/tracepoint-sample.c
+++ b/samples/tracepoints/tracepoint-sample.c
@@ -28,7 +28,7 @@ static int my_open(struct inode *inode, struct file *file)
28 return -EPERM; 28 return -EPERM;
29} 29}
30 30
31static struct file_operations mark_ops = { 31static const struct file_operations mark_ops = {
32 .open = my_open, 32 .open = my_open,
33}; 33};
34 34