Commit-ID: 9be95bdc53c12ada23e39027237fd05e1393d893
Gitweb: https://git.kernel.org/tip/9be95bdc53c12ada23e39027237fd05e1393d893
Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Fri, 6 Oct 2017 08:15:57 +0900
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Fri, 20 Oct 2017 11:02:55 +0200
kprobes: Remove the jprobes sample code
Remove the jprobes sample module because jprobes are deprecated.
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxxxxxxxxxx>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@xxxxxxxxx>
Cc: David S . Miller <davem@xxxxxxxxxxxxx>
Cc: Ian McDonald <ian.mcdonald@xxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Paul E . McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Vlad Yasevich <vyasevich@xxxxxxxxx>
Link: http://lkml.kernel.org/r/150724535709.5014.7261513316230565780.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
samples/kprobes/Makefile | 2 +-
samples/kprobes/jprobe_example.c | 67 ----------------------------------------
2 files changed, 1 insertion(+), 68 deletions(-)
diff --git a/samples/kprobes/Makefile b/samples/kprobes/Makefile
index 68739bc..880e54d 100644
--- a/samples/kprobes/Makefile
+++ b/samples/kprobes/Makefile
@@ -1,5 +1,5 @@
# builds the kprobes example kernel modules;
# then to use one (as root): insmod <module_name.ko>
-obj-$(CONFIG_SAMPLE_KPROBES) += kprobe_example.o jprobe_example.o
+obj-$(CONFIG_SAMPLE_KPROBES) += kprobe_example.o
obj-$(CONFIG_SAMPLE_KRETPROBES) += kretprobe_example.o
diff --git a/samples/kprobes/jprobe_example.c b/samples/kprobes/jprobe_example.c
deleted file mode 100644
index e3c0a40..0000000
--- a/samples/kprobes/jprobe_example.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Here's a sample kernel module showing the use of jprobes to dump
- * the arguments of _do_fork().
- *
- * For more information on theory of operation of jprobes, see
- * Documentation/kprobes.txt
- *
- * Build and insert the kernel module as done in the kprobe example.
- * You will see the trace data in /var/log/messages and on the
- * console whenever _do_fork() is invoked to create a new process.
- * (Some messages may be suppressed if syslogd is configured to
- * eliminate duplicate messages.)
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/kprobes.h>
-
-/*
- * Jumper probe for _do_fork.
- * Mirror principle enables access to arguments of the probed routine
- * from the probe handler.
- */
-
-/* Proxy routine having the same arguments as actual _do_fork() routine */
-static long j_do_fork(unsigned long clone_flags, unsigned long stack_start,
- unsigned long stack_size, int __user *parent_tidptr,
- int __user *child_tidptr, unsigned long tls)
-{
- pr_info("jprobe: clone_flags = 0x%lx, stack_start = 0x%lx "
- "stack_size = 0x%lx\n", clone_flags, stack_start, stack_size);
-
- /* Always end with a call to jprobe_return(). */
- jprobe_return();
- return 0;
-}
-
-static struct jprobe my_jprobe = {
- .entry = j_do_fork,
- .kp = {
- .symbol_name = "_do_fork",
- },
-};
-
-static int __init jprobe_init(void)
-{
- int ret;
-
- ret = register_jprobe(&my_jprobe);
- if (ret < 0) {
- pr_err("register_jprobe failed, returned %d\n", ret);
- return -1;
- }
- pr_info("Planted jprobe at %p, handler addr %p\n",
- my_jprobe.kp.addr, my_jprobe.entry);
- return 0;
-}
-
-static void __exit jprobe_exit(void)
-{
- unregister_jprobe(&my_jprobe);
- pr_info("jprobe at %p unregistered\n", my_jprobe.kp.addr);
-}
-
-module_init(jprobe_init)
-module_exit(jprobe_exit)
-MODULE_LICENSE("GPL");
--
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