path: root/samples/kprobes
diff options
authorMichael Ellerman <>2014-09-24 16:08:33 +1000
committerJiri Kosina <>2014-09-26 11:11:12 +0200
commite8ac6ea8a42d6506345056c6de3e81c97d3f20af (patch)
tree82bd3e744fd2ecd0f95fbee3b40fcf061bb8fdef /samples/kprobes
parent2d69049ab7028ac656a8545a068cc10a663a9805 (diff)
kprobes: update jprobe_example.c for do_fork() change
In commit e80d666 "flagday: kill pt_regs argument of do_fork()", the arguments to do_fork() changed. The example code in jprobe_example.c was not updated to match, so the arguments inside the jprobe handler do not match reality. Fix it by updating the arguments to match do_fork(). While we're at it use pr_info() for brevity, and print stack_start as well for interest. Signed-off-by: Michael Ellerman <> Acked-by: Masami Hiramatsu <> Signed-off-by: Jiri Kosina <>
Diffstat (limited to 'samples/kprobes')
1 files changed, 4 insertions, 5 deletions
diff --git a/samples/kprobes/jprobe_example.c b/samples/kprobes/jprobe_example.c
index b7541355b92b..9119ac6a8270 100644
--- a/samples/kprobes/jprobe_example.c
+++ b/samples/kprobes/jprobe_example.c
@@ -24,12 +24,11 @@
/* Proxy routine having the same arguments as actual do_fork() routine */
static long jdo_fork(unsigned long clone_flags, unsigned long stack_start,
- struct pt_regs *regs, unsigned long stack_size,
- int __user *parent_tidptr, int __user *child_tidptr)
+ unsigned long stack_size, int __user *parent_tidptr,
+ int __user *child_tidptr)
- printk(KERN_INFO "jprobe: clone_flags = 0x%lx, stack_size = 0x%lx,"
- " regs = 0x%p\n",
- clone_flags, stack_size, regs);
+ 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(). */