ftrace_update_pid_func

Name:ftrace_update_pid_func

Proto:static void ftrace_update_pid_func(void)

Type:void

Parameter:Nothing

376

If ftrace_trace_function == ftrace_stub Then Return

379

Traverse the ftrace_global_list, invoking all entries. The reason that we* can use rcu_dereference_raw_check() is that elements removed from this list* are simply leaked, so there is no need to interact with a grace-period* mechanism(op, ftrace_ops_list)

380

If flags & FTRACE_OPS_FL_PID Then

381

func = If ftrace_pids_enabled(op) Then ftrace_pid_func Else saved_func

383

ftrace_update_trampoline(op)

387

update_ftrace_function()

**Caller**
Name	Describe
ftrace_pid_reset
ftrace_pid_write

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