When clearing the wait channel also clear the wait message.

There is no reason to keep the wait message in place since it will
never show up even in ddb show proc output.
OK jca@

diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c
index 44fe897..21ee0c6 100644 (file)
--- a/sys/kern/kern_synch.c
+++ b/sys/kern/kern_synch.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: kern_synch.c,v 1.203 2024/05/20 10:32:20 claudio Exp $        */
+/*     $OpenBSD: kern_synch.c,v 1.204 2024/05/22 09:24:11 claudio Exp $        */
 /*     $NetBSD: kern_synch.c,v 1.37 1996/04/22 01:38:37 christos Exp $ */
 
 /*
@@ -521,6 +521,7 @@ unsleep(struct proc *p)
        if (p->p_wchan != NULL) {
                TAILQ_REMOVE(&slpque[LOOKUP(p->p_wchan)], p, p_runq);
                p->p_wchan = NULL;
+               p->p_wmesg = NULL;
                TRACEPOINT(sched, unsleep, p->p_tid + THREAD_PID_OFFSET,
                    p->p_p->ps_pid);
        }
@@ -551,6 +552,7 @@ wakeup_n(const volatile void *ident, int n)
                if (p->p_wchan == ident) {
                        TAILQ_REMOVE(qp, p, p_runq);
                        p->p_wchan = NULL;
+                       p->p_wmesg = NULL;
                        TAILQ_INSERT_TAIL(&wakeq, p, p_runq);
                        --n;
                }