diff options
Diffstat (limited to 'sys/kern/subr_uio.c')
| -rw-r--r-- | sys/kern/subr_uio.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/sys/kern/subr_uio.c b/sys/kern/subr_uio.c index 9b93005..77156f1 100644 --- a/sys/kern/subr_uio.c +++ b/sys/kern/subr_uio.c @@ -158,8 +158,7 @@ uiomove(void *cp, int n, struct uio *uio) switch (uio->uio_segflg) { case UIO_USERSPACE: - if (ticks - PCPU_GET(switchticks) >= hogticks) - uio_yield(); + maybe_yield(); if (uio->uio_rw == UIO_READ) error = copyout(cp, iov->iov_base, cnt); else @@ -283,11 +282,8 @@ uiomoveco(void *cp, int n, struct uio *uio, int disposable) switch (uio->uio_segflg) { case UIO_USERSPACE: - if (ticks - PCPU_GET(switchticks) >= hogticks) - uio_yield(); - + maybe_yield(); error = userspaceco(cp, cnt, uio, disposable); - if (error) return (error); break; @@ -356,20 +352,6 @@ again: return (0); } -void -uio_yield(void) -{ - struct thread *td; - - td = curthread; - DROP_GIANT(); - thread_lock(td); - sched_prio(td, td->td_user_pri); - mi_switch(SW_INVOL | SWT_RELINQUISH, NULL); - thread_unlock(td); - PICKUP_GIANT(); -} - int copyinfrom(const void * __restrict src, void * __restrict dst, size_t len, int seg) |
