M sys/kern/subr_taskqueue.c
@@ -108,6 +108,7 @@ TQ_UNLOCK(struct taskqueue *tq)
 static __inline void
 TQ_SLEEP(struct taskqueue *tq, void *ident, const char *wmesg)
 {
+	kprintf("[ALY/DEBUG] %s@cpu#%d: tq=%p, ident=%p ...\n", __func__, mycpuid, tq, ident);
 	ssleep(ident, &tq->tq_lock, 0, wmesg, 0);
 }
 
@@ -615,8 +616,10 @@ taskqueue_thread_loop(void *arg)
 	tq = *tqp;
 	TQ_LOCK(tq);
 	while ((tq->tq_flags & TQ_FLAGS_ACTIVE) != 0) {
+		kprintf("[ALY/DEBUG] %s@cpu#%d: running tq=%p ...\n", __func__, mycpuid, tq);
 		taskqueue_run(tq, 1);
 		TQ_SLEEP(tq, tq, "tqthr");
+		kprintf("[ALY/DEBUG] %s@cpu#%d: tq=%p woken up\n", __func__, mycpuid, tq);
 	}
 
 	/* rendezvous with thread that asked us to terminate */
@@ -637,6 +640,7 @@ taskqueue_thread_enqueue(void *context)
 
 	/* Unlock spinlock before wakeup_one() */
 	TQ_UNLOCK(tq);
+	kprintf("[ALY/DEBUG] %s@cpu#%d: waking up tq=%p ...\n", __func__, mycpuid, tq);
 	wakeup_one(tq);
 	TQ_LOCK(tq);
 }


$ ps -ax -O nwchan | grep wg_
   PID    WCHAN TT  STAT        TIME COMMAND
    -1 fffff80065c97e68 ??  B0       0:00.03 (wg_taskq_cpu_0)
    -1 fffff80065c97d60 ??  B1       0:00.18 (wg_taskq_cpu_1)
    -1 fffff80065c97e10 ??  B2       0:00.02 (wg_taskq_cpu_2)
    -1 fffff80065c97ec0 ??  B3       0:00.48 (wg_taskq_cpu_3)


[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#1: waking up tq=0xfffff80065c97d60 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#1: dispatched to cpu=1
[ALY/DEBUG] taskqueue_thread_loop@cpu#1: tq=0xfffff80065c97d60 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#1: running tq=0xfffff80065c97d60 ...
[ALY/DEBUG] wg_softc_encrypt@cpu#1: processing ...
[ALY/DEBUG] wg_softc_encrypt@cpu#1: encrypting pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_mbuf_reset: m=0xfffff800ac9c9a00, flags: 0x8002 -> 0x8002, csum_flags: 0x0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#1: waking up tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] TQ_SLEEP@cpu#1: tq=0xfffff80065c97d60, ident=0xfffff80065c97d60 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97e10 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=2
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=3
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_softc_encrypt@cpu#3: processing ...
[ALY/DEBUG] wg_softc_encrypt@cpu#3: encrypting pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_mbuf_reset: m=0xfffff800ac5f2200, flags: 0x8002 -> 0x8002, csum_flags: 0x0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97e68 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=0
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97d60 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=1
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97e10 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=2
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=3
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_softc_encrypt@cpu#3: processing ...
[ALY/DEBUG] wg_softc_encrypt@cpu#3: encrypting pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_mbuf_reset: m=0xfffff800ac5f2a00, flags: 0x8002 -> 0x8002, csum_flags: 0x0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...

[ALY/DEBUG] wg_send_keepalive: staged packet=0xfffff800aafd01d0, queue length=1
wg0: Sending keepalive packet to peer 0
[ALY/DEBUG] wg_peer_send_staged: queued packet=0xfffff800aafd01d0
[ALY/DEBUG] taskqueue_thread_enqueue@cpu#3: waking up tq=0xfffff80065c97e68 ...
[ALY/DEBUG] wg_encrypt_dispatch@cpu#3: dispatched to cpu=0
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: tq=0xfffff80065c97ec0 woken up
[ALY/DEBUG] taskqueue_thread_loop@cpu#3: running tq=0xfffff80065c97ec0 ...
[ALY/DEBUG] wg_deliver_out@cpu#3: delivering pkt=0xfffff800aafd01d0
[ALY/DEBUG] wg_send: remote=INET 192.168.33.4:6222, control=0, ret=0
[ALY/DEBUG] TQ_SLEEP@cpu#3: tq=0xfffff80065c97ec0, ident=0xfffff80065c97ec0 ...