76 static void do_osd_del(u_int type, struct osd *osd, u_int slot,
102 	 * destructor, because NULL destructor means unused slot.  in osd_register()
109 	 * First, we try to find unused slot.  in osd_register()
113 			OSD_DEBUG("Unused slot found (type=%u, slot=%u).",  in osd_register()
119 	 * If no unused slot was found, allocate one.  in osd_register()
135 		OSD_DEBUG("New slot allocated (type=%u, slot=%u).",  in osd_register()
150 osd_deregister(u_int type, u_int slot)  in osd_deregister()  argument
155 	KASSERT(slot > 0, ("Invalid slot."));  in osd_deregister()
159 	KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));  in osd_deregister()
162 	 * Free all OSD for the given slot.  in osd_deregister()
166 		do_osd_del(type, osd, slot, 1);  in osd_deregister()
170 	 * Set destructor to NULL to free the slot.  We don't bother actually  in osd_deregister()
177 	osdm[type].osd_destructors[slot - 1] = NULL;  in osd_deregister()
178 	OSD_DEBUG("Slot deregistration (type=%u, slot=%u).", type, slot);  in osd_deregister()
185 osd_set(u_int type, struct osd *osd, u_int slot, void *value)  in osd_set()  argument
188 	return (osd_set_reserved(type, osd, slot, NULL, value));  in osd_set()
192 osd_reserve(u_int slot)  in osd_reserve()  argument
195 	KASSERT(slot > 0, ("Invalid slot."));  in osd_reserve()
197 	OSD_DEBUG("Reserving slot array (slot=%u).", slot);  in osd_reserve()
198 	return (malloc(sizeof(void *) * slot, M_OSD, M_WAITOK | M_ZERO));  in osd_reserve()
202 osd_set_reserved(u_int type, struct osd *osd, u_int slot, void **rsv,  in osd_set_reserved()  argument
208 	KASSERT(slot > 0, ("Invalid slot."));  in osd_set_reserved()
211 	KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));  in osd_set_reserved()
213 	if (slot > osd->osd_nslots) {  in osd_set_reserved()
218 			    "Not allocating null slot (type=%u, slot=%u).",  in osd_set_reserved()
219 			    type, slot);  in osd_set_reserved()
242 			newptr = realloc(osd->osd_slots, sizeof(void *) * slot,  in osd_set_reserved()
258 			OSD_DEBUG("Setting first slot (type=%u).", type);  in osd_set_reserved()
262 		osd->osd_nslots = slot;  in osd_set_reserved()
265 	OSD_DEBUG("Setting slot value (type=%u, slot=%u, value=%p).", type,  in osd_set_reserved()
266 	    slot, value);  in osd_set_reserved()
267 	osd->osd_slots[slot - 1] = value;  in osd_set_reserved()
276 	OSD_DEBUG("Discarding reserved slot array.");  in osd_free_reserved()
281 osd_get_unlocked(u_int type, struct osd *osd, u_int slot)  in osd_get_unlocked()  argument
285 	KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));  in osd_get_unlocked()
287 	if (slot > osd->osd_nslots) {  in osd_get_unlocked()
289 		OSD_DEBUG("Slot doesn't exist (type=%u, slot=%u).", type, slot);  in osd_get_unlocked()
291 		value = atomic_load_ptr(&osd->osd_slots[slot - 1]);  in osd_get_unlocked()
292 		OSD_DEBUG("Returning slot value (type=%u, slot=%u, value=%p).",  in osd_get_unlocked()
293 		    type, slot, value);  in osd_get_unlocked()
299 osd_get(u_int type, struct osd *osd, u_int slot)  in osd_get()  argument
305 	KASSERT(slot > 0, ("Invalid slot."));  in osd_get()
308 	value = osd_get_unlocked(type, osd, slot);  in osd_get()
314 osd_del(u_int type, struct osd *osd, u_int slot)  in osd_del()  argument
319 	do_osd_del(type, osd, slot, 0);  in osd_del()
324 do_osd_del(u_int type, struct osd *osd, u_int slot, int list_locked)  in do_osd_del()  argument
329 	KASSERT(slot > 0, ("Invalid slot."));  in do_osd_del()
330 	KASSERT(osdm[type].osd_destructors[slot - 1] != NULL, ("Unused slot."));  in do_osd_del()
332 	OSD_DEBUG("Deleting slot (type=%u, slot=%u).", type, slot);  in do_osd_del()
334 	if (slot > osd->osd_nslots) {  in do_osd_del()
335 		OSD_DEBUG("Slot doesn't exist (type=%u, slot=%u).", type, slot);  in do_osd_del()
338 	if (osd->osd_slots[slot - 1] != NULL) {  in do_osd_del()
339 		osdm[type].osd_destructors[slot - 1](osd->osd_slots[slot - 1]);  in do_osd_del()
340 		osd->osd_slots[slot - 1] = NULL;  in do_osd_del()
344 			OSD_DEBUG("Slot still has a value (type=%u, slot=%u).",  in do_osd_del()
360 	} else if (slot == osd->osd_nslots) {  in do_osd_del()
361 		/* This was the last slot. */  in do_osd_del()
385 	 * Call this method for every slot that defines it, stopping if an  in osd_call()
391 		/* Hole in the slot map; avoid dereferencing. */  in osd_call()
422 			OSD_DEBUG("Unused slot (type=%u, slot=%u).", type, i);  in osd_exit()