75 	struct trampchunk *chunk;  in kinst_trampchunk_alloc()  local
93 	 * Allocate virtual memory for the trampoline chunk. The returned  in kinst_trampchunk_alloc()
101 		KINST_LOG("trampoline chunk allocation failed: %d", error);  in kinst_trampchunk_alloc()
111 	/* Allocate a tracker for this chunk. */  in kinst_trampchunk_alloc()
112 	chunk = malloc(sizeof(*chunk), M_KINST, M_WAITOK);  in kinst_trampchunk_alloc()
113 	chunk->addr = (void *)trampaddr;  in kinst_trampchunk_alloc()
114 	BIT_FILL(KINST_TRAMPS_PER_CHUNK, &chunk->free);  in kinst_trampchunk_alloc()
116 	TAILQ_INSERT_HEAD(&kinst_trampchunks, chunk, next);  in kinst_trampchunk_alloc()
118 	return (chunk);  in kinst_trampchunk_alloc()
122 kinst_trampchunk_free(struct trampchunk *chunk)  in kinst_trampchunk_free()  argument
126 	TAILQ_REMOVE(&kinst_trampchunks, chunk, next);  in kinst_trampchunk_free()
127 	kmem_unback(kernel_object, (vm_offset_t)chunk->addr,  in kinst_trampchunk_free()
129 	(void)vm_map_remove(kernel_map, (vm_offset_t)chunk->addr,  in kinst_trampchunk_free()
130 	    (vm_offset_t)(chunk->addr + KINST_TRAMPCHUNK_SIZE));  in kinst_trampchunk_free()
131 	free(chunk, M_KINST);  in kinst_trampchunk_free()
137 	struct trampchunk *chunk;  in kinst_trampoline_alloc_locked()  local
143 	TAILQ_FOREACH(chunk, &kinst_trampchunks, next) {  in kinst_trampoline_alloc_locked()
144 		/* All trampolines from this chunk are already allocated. */  in kinst_trampoline_alloc_locked()
145 		if ((off = BIT_FFS(KINST_TRAMPS_PER_CHUNK, &chunk->free)) == 0)  in kinst_trampoline_alloc_locked()
151 	if (chunk == NULL) {  in kinst_trampoline_alloc_locked()
155 		if ((chunk = kinst_trampchunk_alloc()) == NULL) {  in kinst_trampoline_alloc_locked()
176 	BIT_CLR(KINST_TRAMPS_PER_CHUNK, off, &chunk->free);  in kinst_trampoline_alloc_locked()
177 	tramp = chunk->addr + off * KINST_TRAMP_SIZE;  in kinst_trampoline_alloc_locked()
195 	struct trampchunk *chunk;  in kinst_trampoline_dealloc_locked()  local
203 	TAILQ_FOREACH(chunk, &kinst_trampchunks, next) {  in kinst_trampoline_dealloc_locked()
205 			if (chunk->addr + off * KINST_TRAMP_SIZE == tramp) {  in kinst_trampoline_dealloc_locked()
208 				    &chunk->free);  in kinst_trampoline_dealloc_locked()
211 				    &chunk->free))  in kinst_trampoline_dealloc_locked()
212 					kinst_trampchunk_free(chunk);  in kinst_trampoline_dealloc_locked()
217 	panic("%s: did not find trampoline chunk for %p", __func__, tramp);  in kinst_trampoline_dealloc_locked()
322 	struct trampchunk *chunk, *tmp;  in kinst_trampoline_deinit()  local
341 	TAILQ_FOREACH_SAFE(chunk, &kinst_trampchunks, next, tmp)  in kinst_trampoline_deinit()
342 		kinst_trampchunk_free(chunk);  in kinst_trampoline_deinit()
345 	struct trampchunk *chunk, *tmp;  in kinst_trampoline_deinit()
348 	TAILQ_FOREACH_SAFE(chunk, &kinst_trampchunks, next, tmp)  in kinst_trampoline_deinit()
349 		kinst_trampchunk_free(chunk);  in kinst_trampoline_deinit()