34 static void zcomp_strm_free(struct zcomp_strm *zstrm)  in zcomp_strm_free()  argument
36 	if (!IS_ERR_OR_NULL(zstrm->tfm))  in zcomp_strm_free()
37 		crypto_free_comp(zstrm->tfm);  in zcomp_strm_free()
38 	free_pages((unsigned long)zstrm->buffer, 1);  in zcomp_strm_free()
39 	zstrm->tfm = NULL;  in zcomp_strm_free()
40 	zstrm->buffer = NULL;  in zcomp_strm_free()
47 static int zcomp_strm_init(struct zcomp_strm *zstrm, struct zcomp *comp)  in zcomp_strm_init()  argument
49 	zstrm->tfm = crypto_alloc_comp(comp->name, 0, 0);  in zcomp_strm_init()
54 	zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1);  in zcomp_strm_init()
55 	if (IS_ERR_OR_NULL(zstrm->tfm) || !zstrm->buffer) {  in zcomp_strm_init()
56 		zcomp_strm_free(zstrm);  in zcomp_strm_init()
121 int zcomp_compress(struct zcomp_strm *zstrm,  in zcomp_compress()  argument
140 	return crypto_comp_compress(zstrm->tfm,  in zcomp_compress()
142 			zstrm->buffer, dst_len);  in zcomp_compress()
145 int zcomp_decompress(struct zcomp_strm *zstrm,  in zcomp_decompress()  argument
150 	return crypto_comp_decompress(zstrm->tfm,  in zcomp_decompress()
158 	struct zcomp_strm *zstrm;  in zcomp_cpu_up_prepare()  local
161 	zstrm = per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_up_prepare()
162 	local_lock_init(&zstrm->lock);  in zcomp_cpu_up_prepare()
164 	ret = zcomp_strm_init(zstrm, comp);  in zcomp_cpu_up_prepare()
173 	struct zcomp_strm *zstrm;  in zcomp_cpu_dead()  local
175 	zstrm = per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_dead()
176 	zcomp_strm_free(zstrm);  in zcomp_cpu_dead()