pv_wait_head_or_lock  285 kernel/locking/qspinlock.c #define pv_wait_head_or_lock	__pv_wait_head_or_lock
pv_wait_head_or_lock  575 kernel/locking/qspinlock.c #undef pv_wait_head_or_lock
pv_wait_head_or_lock  403 kernel/locking/qspinlock_paravirt.h pv_wait_head_or_lock(struct qspinlock *lock, struct mcs_spinlock *node)