50 static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp)  in zcomp_strm_alloc()  argument
56 	zstrm->tfm = crypto_alloc_comp(comp->name, 0, 0);  in zcomp_strm_alloc()
69 bool zcomp_available_algorithm(const char *comp)  in zcomp_available_algorithm()  argument
73 	i = __sysfs_match_string(backends, -1, comp);  in zcomp_available_algorithm()
84 	return crypto_has_comp(comp, 0, 0) == 1;  in zcomp_available_algorithm()
88 ssize_t zcomp_available_show(const char *comp, char *buf)  in zcomp_available_show()  argument
95 		if (!strcmp(comp, backends[i])) {  in zcomp_available_show()
109 	if (!known_algorithm && crypto_has_comp(comp, 0, 0) == 1)  in zcomp_available_show()
111 				"[%s] ", comp);  in zcomp_available_show()
117 struct zcomp_strm *zcomp_stream_get(struct zcomp *comp)  in zcomp_stream_get()  argument
119 	return *get_cpu_ptr(comp->stream);  in zcomp_stream_get()
122 void zcomp_stream_put(struct zcomp *comp)  in zcomp_stream_put()  argument
124 	put_cpu_ptr(comp->stream);  in zcomp_stream_put()
163 	struct zcomp *comp = hlist_entry(node, struct zcomp, node);  in zcomp_cpu_up_prepare()  local
166 	if (WARN_ON(*per_cpu_ptr(comp->stream, cpu)))  in zcomp_cpu_up_prepare()
169 	zstrm = zcomp_strm_alloc(comp);  in zcomp_cpu_up_prepare()
174 	*per_cpu_ptr(comp->stream, cpu) = zstrm;  in zcomp_cpu_up_prepare()
180 	struct zcomp *comp = hlist_entry(node, struct zcomp, node);  in zcomp_cpu_dead()  local
183 	zstrm = *per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_dead()
186 	*per_cpu_ptr(comp->stream, cpu) = NULL;  in zcomp_cpu_dead()
190 static int zcomp_init(struct zcomp *comp)  in zcomp_init()  argument
194 	comp->stream = alloc_percpu(struct zcomp_strm *);  in zcomp_init()
195 	if (!comp->stream)  in zcomp_init()
198 	ret = cpuhp_state_add_instance(CPUHP_ZCOMP_PREPARE, &comp->node);  in zcomp_init()
204 	free_percpu(comp->stream);  in zcomp_init()
208 void zcomp_destroy(struct zcomp *comp)  in zcomp_destroy()  argument
210 	cpuhp_state_remove_instance(CPUHP_ZCOMP_PREPARE, &comp->node);  in zcomp_destroy()
211 	free_percpu(comp->stream);  in zcomp_destroy()
212 	kfree(comp);  in zcomp_destroy()
225 	struct zcomp *comp;  in zcomp_create()  local
231 	comp = kzalloc(sizeof(struct zcomp), GFP_KERNEL);  in zcomp_create()
232 	if (!comp)  in zcomp_create()
235 	comp->name = compress;  in zcomp_create()
236 	error = zcomp_init(comp);  in zcomp_create()
238 		kfree(comp);  in zcomp_create()
241 	return comp;  in zcomp_create()