trace_preempt_on  699 include/linux/ftrace.h   extern void trace_preempt_on(unsigned long a0, unsigned long a1);
trace_preempt_on 3800 kernel/sched/core.c 		trace_preempt_on(CALLER_ADDR0, get_lock_parent_ip());
trace_preempt_on  147 kernel/softirq.c 		trace_preempt_on(CALLER_ADDR0, get_lock_parent_ip());