38 static void zcomp_strm_free(struct zcomp_strm *zstrm)  in zcomp_strm_free()  argument
40 	if (!IS_ERR_OR_NULL(zstrm->tfm))  in zcomp_strm_free()
41 		crypto_free_comp(zstrm->tfm);  in zcomp_strm_free()
42 	free_pages((unsigned long)zstrm->buffer, 1);  in zcomp_strm_free()
43 	kfree(zstrm);  in zcomp_strm_free()
52 	struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_KERNEL);  in zcomp_strm_alloc()  local
53 	if (!zstrm)  in zcomp_strm_alloc()
56 	zstrm->tfm = crypto_alloc_comp(comp->name, 0, 0);  in zcomp_strm_alloc()
61 	zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1);  in zcomp_strm_alloc()
62 	if (IS_ERR_OR_NULL(zstrm->tfm) || !zstrm->buffer) {  in zcomp_strm_alloc()
63 		zcomp_strm_free(zstrm);  in zcomp_strm_alloc()
64 		zstrm = NULL;  in zcomp_strm_alloc()
66 	return zstrm;  in zcomp_strm_alloc()
127 int zcomp_compress(struct zcomp_strm *zstrm,  in zcomp_compress()  argument
146 	return crypto_comp_compress(zstrm->tfm,  in zcomp_compress()
148 			zstrm->buffer, dst_len);  in zcomp_compress()
151 int zcomp_decompress(struct zcomp_strm *zstrm,  in zcomp_decompress()  argument
156 	return crypto_comp_decompress(zstrm->tfm,  in zcomp_decompress()
164 	struct zcomp_strm *zstrm;  in zcomp_cpu_up_prepare()  local
169 	zstrm = zcomp_strm_alloc(comp);  in zcomp_cpu_up_prepare()
170 	if (IS_ERR_OR_NULL(zstrm)) {  in zcomp_cpu_up_prepare()
174 	*per_cpu_ptr(comp->stream, cpu) = zstrm;  in zcomp_cpu_up_prepare()
181 	struct zcomp_strm *zstrm;  in zcomp_cpu_dead()  local
183 	zstrm = *per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_dead()
184 	if (!IS_ERR_OR_NULL(zstrm))  in zcomp_cpu_dead()
185 		zcomp_strm_free(zstrm);  in zcomp_cpu_dead()