blob: 6e20bb5c74ea19ea124aa5d0a409498a16a845ba [file] [log] [blame]
static inline void membarrier_arch_switch_mm(struct mm_struct *prev,
struct mm_struct *next,
struct task_struct *tsk)
* Only need the full barrier when switching between processes.
* Barrier when switching from kernel to userspace is not
* required here, given that it is implied by mmdrop(). Barrier
* when switching from userspace to kernel is not needed after
* store to rq->curr.
if (likely(!(atomic_read(&next->membarrier_state) &
* The membarrier system call requires a full memory barrier
* after storing to rq->curr, before going back to user-space.