diff options
Diffstat (limited to 'sys/kern/kern_synch.c')
| -rw-r--r-- | sys/kern/kern_synch.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c index 530b67e..7d55f67 100644 --- a/sys/kern/kern_synch.c +++ b/sys/kern/kern_synch.c @@ -709,16 +709,21 @@ unsleep(p) } /* - * Make all processes sleeping on the specified identifier runnable. + * Make all processes sleeping on the specified identifier runnable. If + * non-NULL, the specified mutex is dropped before any processes are made + * runnable. */ void -wakeup(ident) +mwakeup(ident, mtx) register void *ident; + register struct mtx *mtx; { register struct slpquehead *qp; register struct proc *p; mtx_lock_spin(&sched_lock); + if (mtx != NULL) + mtx_unlock_flags(mtx, MTX_NOSWITCH); qp = &slpque[LOOKUP(ident)]; restart: TAILQ_FOREACH(p, qp, p_slpq) { @@ -751,16 +756,20 @@ restart: /* * Make a process sleeping on the specified identifier runnable. * May wake more than one process if a target process is currently - * swapped out. + * swapped out. If non-NULL, the specified mutex is dropped before + * a process is made runnable. */ void -wakeup_one(ident) +mwakeup_one(ident, mtx) register void *ident; + register struct mtx *mtx; { register struct slpquehead *qp; register struct proc *p; mtx_lock_spin(&sched_lock); + if (mtx != NULL) + mtx_unlock_flags(mtx, MTX_NOSWITCH); qp = &slpque[LOOKUP(ident)]; TAILQ_FOREACH(p, qp, p_slpq) { |
