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	static int busdma_zonecount;	static int busdma_zonecount;
	static STAILQ_HEAD(, bounce_zone) bounce_zone_list;	static STAILQ_HEAD(, bounce_zone) bounce_zone_list;

	static SYSCTL_NODE(_hw, OID_AUTO, busdma, CTLFLAG_RD, 0, "Busdma parameters");	static SYSCTL_NODE(_hw, OID_AUTO, busdma, CTLFLAG_RD \| CTLFLAG_MPSAFE, 0,
		"Busdma parameters");
	SYSCTL_INT(_hw_busdma, OID_AUTO, total_bpages, CTLFLAG_RD, &total_bpages, 0,	SYSCTL_INT(_hw_busdma, OID_AUTO, total_bpages, CTLFLAG_RD, &total_bpages, 0,
	"Total bounce pages");	"Total bounce pages");

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	sysctl_ctx_init(&bz->sysctl_tree);	sysctl_ctx_init(&bz->sysctl_tree);
	bz->sysctl_tree_top = SYSCTL_ADD_NODE(&bz->sysctl_tree,	bz->sysctl_tree_top = SYSCTL_ADD_NODE(&bz->sysctl_tree,
	SYSCTL_STATIC_CHILDREN(_hw_busdma), OID_AUTO, bz->zoneid,	SYSCTL_STATIC_CHILDREN(_hw_busdma), OID_AUTO, bz->zoneid,
	CTLFLAG_RD, 0, "");	CTLFLAG_RD \| CTLFLAG_MPSAFE, 0, "");
	if (bz->sysctl_tree_top == NULL) {	if (bz->sysctl_tree_top == NULL) {
	sysctl_ctx_free(&bz->sysctl_tree);	sysctl_ctx_free(&bz->sysctl_tree);
	return (0); /* XXX error code? */	return (0); /* XXX error code? */
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