3  * System Trace Module (STM) master/channel allocation policy management
17 #include <linux/stm.h>
18 #include "stm.h"
26 	struct stm_device	*stm;  member
107 	struct stm_device *stm;  in stp_policy_node_masters_store()  local
115 	stm = policy_node->policy->stm;  in stp_policy_node_masters_store()
116 	if (!stm)  in stp_policy_node_masters_store()
120 	if (first > last || first < stm->data->sw_start ||  in stp_policy_node_masters_store()
121 	    last > stm->data->sw_end) {  in stp_policy_node_masters_store()
154 	struct stm_device *stm;  in stp_policy_node_channels_store()  local
162 	stm = policy_node->policy->stm;  in stp_policy_node_channels_store()
163 	if (!stm)  in stp_policy_node_channels_store()
167 	    last >= stm->data->sw_nchannels) {  in stp_policy_node_channels_store()
243 	if (!policy->stm)  in stp_policy_node_make()
246 	pdrv = policy->stm->pdrv;  in stp_policy_node_make()
256 	if (policy->stm->pdrv_node_type)  in stp_policy_node_make()
257 		type = policy->stm->pdrv_node_type;  in stp_policy_node_make()
264 	policy_node->first_master = policy->stm->data->sw_start;  in stp_policy_node_make()
265 	policy_node->last_master = policy->stm->data->sw_end;  in stp_policy_node_make()
267 	policy_node->last_channel = policy->stm->data->sw_nchannels - 1;  in stp_policy_node_make()
300 			(policy && policy->stm) ?  in stp_policy_device_show()
301 			policy->stm->data->name :  in stp_policy_device_show()
316 			(policy && policy->stm) ?  in stp_policy_protocol_show()
317 			policy->stm->pdrv->name :  in stp_policy_protocol_show()
333 	struct stm_device *stm = policy->stm;  in stp_policy_unbind()  local
340 	if (WARN_ON_ONCE(!policy->stm))  in stp_policy_unbind()
343 	lockdep_assert_held(&stm->policy_mutex);  in stp_policy_unbind()
345 	stm->policy = NULL;  in stp_policy_unbind()
346 	policy->stm = NULL;  in stp_policy_unbind()
351 	stm_put_protocol(stm->pdrv);  in stp_policy_unbind()
352 	stm->pdrv = NULL;  in stp_policy_unbind()
353 	stm_put_device(stm);  in stp_policy_unbind()
359 	struct stm_device *stm = policy->stm;  in stp_policy_release()  local
362 	if (!stm)  in stp_policy_release()
365 	mutex_lock(&stm->policy_mutex);  in stp_policy_release()
367 	mutex_unlock(&stm->policy_mutex);  in stp_policy_release()
394 	struct stm_device *stm;  in stp_policy_make()  local
403 	 * <device_name> is the name of an existing stm device; may  in stp_policy_make()
425 	stm = stm_find_device(devname);  in stp_policy_make()
426 	if (!stm) {  in stp_policy_make()
435 		stm_put_device(stm);  in stp_policy_make()
439 	mutex_lock(&stm->policy_mutex);  in stp_policy_make()
440 	if (stm->policy) {  in stp_policy_make()
445 	stm->policy = kzalloc(sizeof(*stm->policy), GFP_KERNEL);  in stp_policy_make()
446 	if (!stm->policy) {  in stp_policy_make()
451 	config_group_init_type_name(&stm->policy->group, name,  in stp_policy_make()
454 	stm->pdrv = pdrv;  in stp_policy_make()
455 	stm->pdrv_node_type = pdrv_node_type;  in stp_policy_make()
456 	stm->policy->stm = stm;  in stp_policy_make()
457 	ret = &stm->policy->group;  in stp_policy_make()
460 	mutex_unlock(&stm->policy_mutex);  in stp_policy_make()
464 		 * pdrv and stm->pdrv at this point can be quite different,  in stp_policy_make()
468 		stm_put_device(stm);  in stp_policy_make()
538 stp_policy_node_lookup(struct stm_device *stm, char *s)  in stp_policy_node_lookup()  argument
544 	mutex_lock(&stm->policy_mutex);  in stp_policy_node_lookup()
545 	if (stm->policy)  in stp_policy_node_lookup()
546 		policy_node = __stp_policy_node_lookup(stm->policy, s);  in stp_policy_node_lookup()
547 	mutex_unlock(&stm->policy_mutex);  in stp_policy_node_lookup()