kprobe_ftrace_handler

Name:Ftrace callback handler for kprobes -- called under preepmt disabed

Proto:void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *ops, struct pt_regs *regs)

Type:void

Parameter:

Type	Parameter	Name
unsigned long	ip
unsigned long	parent_ip
struct ftrace_ops *	ops
struct pt_regs *	regs

23

p = Get the kprobe at this addr (if any) - called with preemption disabled

24

If Value for the false possibility is greater at compile time(!p) || Is this kprobe disabled ? Then Return

27

kcb = get_kprobe_ctlblk()

28

If kprobe_running() will just return the current_kprobe on this CPU Then

29

kprobes_inc_nmissed_count(p)

30

Else

31

33

ip = ip + sizeof(kprobe_opcode_t)

35

__this_cpu_write(current_kprobe, p)

36

kprobe_status = kprobe_status settings

37

If Not Called before addr is executed. || Not Called before addr is executed. (p, regs) Then

42

ip = location of the probe point + sizeof mcount call

43

If Value for the false possibility is greater at compile time( Called after addr is executed, unless... ) Then

44

kprobe_status = KPROBE_HIT_SSDONE

45

Called after addr is executed, unless... (p, regs, 0)

47

53

__this_cpu_write(current_kprobe, NULL)

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