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Commit e8ac6ea8 authored by Michael Ellerman's avatar Michael Ellerman Committed by Jiri Kosina
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kprobes: update jprobe_example.c for do_fork() change 



In commit e80d6661 "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: default avatarMichael Ellerman <mpe@ellerman.id.au>
Acked-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 2d69049a

samples/kprobes/jprobe_example.c

+4 −5
Original line number Diff line number Diff line
@@ -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(). */

	jprobe_return();