__thrsleep uses memory on the stack instead of in struct proc now, so we
can pull this out.

ok?

Index: sys/proc.h
===================================================================
RCS file: /cvs/src/sys/sys/proc.h,v
diff -u -p -r1.393 proc.h
--- sys/proc.h	12 Jun 2025 20:47:11 -0000	1.393
+++ sys/proc.h	23 Jul 2025 01:44:16 -0000
@@ -127,8 +127,6 @@ struct tusage {
  */
 #ifdef __need_process
 struct proc;
-struct tslpentry;
-TAILQ_HEAD(tslpqueue, tslpentry);
 struct unveil;
 
 struct pinsyscall {
@@ -186,7 +184,6 @@ struct process {
 	struct	vmspace *ps_vmspace;	/* Address space */
 	pid_t	ps_pid;			/* [I] Process identifier. */
 
-	struct	tslpqueue ps_tslpqueue;	/* [p] queue of threads in thrsleep */
 	struct	rwlock	ps_lock;	/* per-process rwlock */
 	struct  mutex	ps_mtx;		/* per-process mutex */
 
Index: kern/kern_fork.c
===================================================================
RCS file: /cvs/src/sys/kern/kern_fork.c,v
diff -u -p -r1.273 kern_fork.c
--- kern/kern_fork.c	9 Jun 2025 11:11:03 -0000	1.273
+++ kern/kern_fork.c	23 Jul 2025 01:44:17 -0000
@@ -199,7 +199,6 @@ process_initialize(struct process *pr, s
 	LIST_INIT(&pr->ps_children);
 	LIST_INIT(&pr->ps_orphans);
 	LIST_INIT(&pr->ps_sigiolst);
-	TAILQ_INIT(&pr->ps_tslpqueue);
 
 	rw_init(&pr->ps_lock, "pslock");
 	mtx_init(&pr->ps_mtx, IPL_HIGH);
Index: kern/kern_synch.c
===================================================================
RCS file: /cvs/src/sys/kern/kern_synch.c,v
diff -u -p -r1.229 kern_synch.c
--- kern/kern_synch.c	14 Jul 2025 08:47:15 -0000	1.229
+++ kern/kern_synch.c	23 Jul 2025 01:44:17 -0000
@@ -654,6 +659,8 @@ struct tslpentry {
 	long			 tslp_ident;
 	struct proc *volatile	 tslp_p;
 };
+
+TAILQ_HEAD(tslpqueue, tslpentry);
 
 struct tslp_bucket {
 	struct tslpqueue	 tsb_list;