diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 16:35:07 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 16:35:07 -0400 |
commit | 92b29b86fe2e183d44eb467e5e74a5f718ef2e43 (patch) | |
tree | 1bac8a1aa11d47322b66d10ec3a370016d843d06 /samples/tracepoints/tracepoint-sample.c | |
parent | b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0 (diff) | |
parent | 98d9c66ab07471006fd7910cb16453581c41a3e7 (diff) |
Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits)
tracing/fastboot: improve help text
tracing/stacktrace: improve help text
tracing/fastboot: fix initcalls disposition in bootgraph.pl
tracing/fastboot: fix bootgraph.pl initcall name regexp
tracing/fastboot: fix issues and improve output of bootgraph.pl
tracepoints: synchronize unregister static inline
tracepoints: tracepoint_synchronize_unregister()
ftrace: make ftrace_test_p6nop disassembler-friendly
markers: fix synchronize marker unregister static inline
tracing/fastboot: add better resolution to initcall debug/tracing
trace: add build-time check to avoid overrunning hex buffer
ftrace: fix hex output mode of ftrace
tracing/fastboot: fix initcalls disposition in bootgraph.pl
tracing/fastboot: fix printk format typo in boot tracer
ftrace: return an error when setting a nonexistent tracer
ftrace: make some tracers reentrant
ring-buffer: make reentrant
ring-buffer: move page indexes into page headers
tracing/fastboot: only trace non-module initcalls
ftrace: move pc counter in irqtrace
...
Manually fix conflicts:
- init/main.c: initcall tracing
- kernel/module.c: verbose level vs tracepoints
- scripts/bootgraph.pl: fallout from cherry-picking commits.
Diffstat (limited to 'samples/tracepoints/tracepoint-sample.c')
-rw-r--r-- | samples/tracepoints/tracepoint-sample.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/samples/tracepoints/tracepoint-sample.c b/samples/tracepoints/tracepoint-sample.c new file mode 100644 index 000000000000..4ae4b7fcc043 --- /dev/null +++ b/samples/tracepoints/tracepoint-sample.c | |||
@@ -0,0 +1,53 @@ | |||
1 | /* tracepoint-sample.c | ||
2 | * | ||
3 | * Executes a tracepoint when /proc/tracepoint-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/sched.h> | ||
13 | #include <linux/proc_fs.h> | ||
14 | #include "tp-samples-trace.h" | ||
15 | |||
16 | struct proc_dir_entry *pentry_example; | ||
17 | |||
18 | static int my_open(struct inode *inode, struct file *file) | ||
19 | { | ||
20 | int i; | ||
21 | |||
22 | trace_subsys_event(inode, file); | ||
23 | for (i = 0; i < 10; i++) | ||
24 | trace_subsys_eventb(); | ||
25 | return -EPERM; | ||
26 | } | ||
27 | |||
28 | static struct file_operations mark_ops = { | ||
29 | .open = my_open, | ||
30 | }; | ||
31 | |||
32 | static int example_init(void) | ||
33 | { | ||
34 | printk(KERN_ALERT "example init\n"); | ||
35 | pentry_example = proc_create("tracepoint-example", 0444, NULL, | ||
36 | &mark_ops); | ||
37 | if (!pentry_example) | ||
38 | return -EPERM; | ||
39 | return 0; | ||
40 | } | ||
41 | |||
42 | static void example_exit(void) | ||
43 | { | ||
44 | printk(KERN_ALERT "example exit\n"); | ||
45 | remove_proc_entry("tracepoint-example", NULL); | ||
46 | } | ||
47 | |||
48 | module_init(example_init) | ||
49 | module_exit(example_exit) | ||
50 | |||
51 | MODULE_LICENSE("GPL"); | ||
52 | MODULE_AUTHOR("Mathieu Desnoyers"); | ||
53 | MODULE_DESCRIPTION("Tracepoint example"); | ||