timers_nohz_active 216 kernel/time/timer.c static DEFINE_STATIC_KEY_FALSE(timers_nohz_active); timers_nohz_active 242 kernel/time/timer.c static_branch_enable(&timers_nohz_active); timers_nohz_active 267 kernel/time/timer.c return static_branch_unlikely(&timers_nohz_active);