D27826.diff
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	diff --git a/sys/kern/subr_kdb.c b/sys/kern/subr_kdb.c
	--- a/sys/kern/subr_kdb.c
	+++ b/sys/kern/subr_kdb.c
	@@ -586,12 +586,15 @@
	{
	struct proc *p;
	struct thread *thr;
	-
	- FOREACH_PROC_IN_SYSTEM(p) {
	- if (p->p_flag & P_INMEM) {
	- thr = FIRST_THREAD_IN_PROC(p);
	- if (thr != NULL)
	- return (thr);
	+ u_int i;
	+
	+ for (i = 0; i <= pidhash; i++) {
	+ LIST_FOREACH(p, &pidhashtbl[i], p_hash) {
	+ if (p->p_flag & P_INMEM) {
	+ thr = FIRST_THREAD_IN_PROC(p);
	+ if (thr != NULL)
	+ return (thr);
	+ }
	}
	}
	return (NULL);
	@@ -602,7 +605,7 @@
	{
	struct proc *p;

	- FOREACH_PROC_IN_SYSTEM(p) {
	+ LIST_FOREACH(p, PIDHASH(pid), p_hash) {
	if (p->p_flag & P_INMEM && p->p_pid == pid)
	return (FIRST_THREAD_IN_PROC(p));
	}
	@@ -624,17 +627,23 @@
	kdb_thr_next(struct thread *thr)
	{
	struct proc *p;
	+ u_int hash;

	p = thr->td_proc;
	thr = TAILQ_NEXT(thr, td_plist);
	- do {
	- if (thr != NULL)
	- return (thr);
	- p = LIST_NEXT(p, p_list);
	- if (p != NULL && (p->p_flag & P_INMEM))
	- thr = FIRST_THREAD_IN_PROC(p);
	- } while (p != NULL);
	- return (NULL);
	+ if (thr != NULL)
	+ return (thr);
	+ hash = p->p_pid & pidhash;
	+ for (;;) {
	+ p = LIST_NEXT(p, p_hash);
	+ while (p == NULL) {
	+ if (++hash > pidhash)
	+ return (NULL);
	+ p = LIST_FIRST(&pidhashtbl[hash]);
	+ }
	+ if (p->p_flag & P_INMEM)
	+ return (FIRST_THREAD_IN_PROC(p));
	+ }
	}

	int