tick_nohz_retain_tick  830 kernel/time/tick-sched.c 		tick_nohz_retain_tick(ts);
tick_nohz_retain_tick  966 kernel/time/tick-sched.c 		tick_nohz_retain_tick(ts);
tick_nohz_retain_tick  982 kernel/time/tick-sched.c 	tick_nohz_retain_tick(this_cpu_ptr(&tick_cpu_sched));