47 static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp)  in zcomp_strm_alloc()  argument
53 	zstrm->tfm = crypto_alloc_comp(comp->name, 0, 0);  in zcomp_strm_alloc()
66 bool zcomp_available_algorithm(const char *comp)  in zcomp_available_algorithm()  argument
70 	i = __sysfs_match_string(backends, -1, comp);  in zcomp_available_algorithm()
81 	return crypto_has_comp(comp, 0, 0) == 1;  in zcomp_available_algorithm()
85 ssize_t zcomp_available_show(const char *comp, char *buf)  in zcomp_available_show()  argument
92 		if (!strcmp(comp, backends[i])) {  in zcomp_available_show()
106 	if (!known_algorithm && crypto_has_comp(comp, 0, 0) == 1)  in zcomp_available_show()
108 				"[%s] ", comp);  in zcomp_available_show()
114 struct zcomp_strm *zcomp_stream_get(struct zcomp *comp)  in zcomp_stream_get()  argument
116 	return *get_cpu_ptr(comp->stream);  in zcomp_stream_get()
119 void zcomp_stream_put(struct zcomp *comp)  in zcomp_stream_put()  argument
121 	put_cpu_ptr(comp->stream);  in zcomp_stream_put()
160 	struct zcomp *comp = hlist_entry(node, struct zcomp, node);  in zcomp_cpu_up_prepare()  local
163 	if (WARN_ON(*per_cpu_ptr(comp->stream, cpu)))  in zcomp_cpu_up_prepare()
166 	zstrm = zcomp_strm_alloc(comp);  in zcomp_cpu_up_prepare()
171 	*per_cpu_ptr(comp->stream, cpu) = zstrm;  in zcomp_cpu_up_prepare()
177 	struct zcomp *comp = hlist_entry(node, struct zcomp, node);  in zcomp_cpu_dead()  local
180 	zstrm = *per_cpu_ptr(comp->stream, cpu);  in zcomp_cpu_dead()
183 	*per_cpu_ptr(comp->stream, cpu) = NULL;  in zcomp_cpu_dead()
187 static int zcomp_init(struct zcomp *comp)  in zcomp_init()  argument
191 	comp->stream = alloc_percpu(struct zcomp_strm *);  in zcomp_init()
192 	if (!comp->stream)  in zcomp_init()
195 	ret = cpuhp_state_add_instance(CPUHP_ZCOMP_PREPARE, &comp->node);  in zcomp_init()
201 	free_percpu(comp->stream);  in zcomp_init()
205 void zcomp_destroy(struct zcomp *comp)  in zcomp_destroy()  argument
207 	cpuhp_state_remove_instance(CPUHP_ZCOMP_PREPARE, &comp->node);  in zcomp_destroy()
208 	free_percpu(comp->stream);  in zcomp_destroy()
209 	kfree(comp);  in zcomp_destroy()
222 	struct zcomp *comp;  in zcomp_create()  local
228 	comp = kzalloc(sizeof(struct zcomp), GFP_KERNEL);  in zcomp_create()
229 	if (!comp)  in zcomp_create()
232 	comp->name = compress;  in zcomp_create()
233 	error = zcomp_init(comp);  in zcomp_create()
235 		kfree(comp);  in zcomp_create()
238 	return comp;  in zcomp_create()