1961 static void init_core_info(struct core_info *cip, struct kvmppc_vcore *vc)  in init_core_info()  argument
1965 	memset(cip, 0, sizeof(*cip));  in init_core_info()
1966 	cip->n_subcores = 1;  in init_core_info()
1967 	cip->max_subcore_threads = vc->num_threads;  in init_core_info()
1968 	cip->total_threads = vc->num_threads;  in init_core_info()
1969 	cip->subcore_threads[0] = vc->num_threads;  in init_core_info()
1970 	cip->subcore_vm[0] = vc->kvm;  in init_core_info()
1972 		INIT_LIST_HEAD(&cip->vcs[sub]);  in init_core_info()
1973 	list_add_tail(&vc->preempt_list, &cip->vcs[0]);  in init_core_info()
2007 static bool can_split_piggybacked_subcores(struct core_info *cip)  in can_split_piggybacked_subcores()  argument
2012 	int n_subcores = cip->n_subcores;  in can_split_piggybacked_subcores()
2016 	for (sub = 0; sub < cip->n_subcores; ++sub) {  in can_split_piggybacked_subcores()
2017 		if (cip->subcore_threads[sub] <= 2)  in can_split_piggybacked_subcores()
2022 		vc = list_first_entry(&cip->vcs[sub], struct kvmppc_vcore,  in can_split_piggybacked_subcores()
2026 		n_subcores += (cip->subcore_threads[sub] - 1) >> 1;  in can_split_piggybacked_subcores()
2036 	new_sub = cip->n_subcores;  in can_split_piggybacked_subcores()
2039 	list_for_each_entry_safe(vc, vcnext, &cip->vcs[sub], preempt_list) {  in can_split_piggybacked_subcores()
2042 			list_add_tail(&vc->preempt_list, &cip->vcs[new_sub]);  in can_split_piggybacked_subcores()
2044 			if (++cip->subcore_threads[new_sub] == 1) {  in can_split_piggybacked_subcores()
2045 				cip->subcore_vm[new_sub] = vc->kvm;  in can_split_piggybacked_subcores()
2048 				++cip->n_subcores;  in can_split_piggybacked_subcores()
2056 	cip->subcore_threads[large_sub] = 2;  in can_split_piggybacked_subcores()
2057 	cip->max_subcore_threads = 2;  in can_split_piggybacked_subcores()
2062 static bool can_dynamic_split(struct kvmppc_vcore *vc, struct core_info *cip)  in can_dynamic_split()  argument
2070 	if (n_threads < cip->max_subcore_threads)  in can_dynamic_split()
2071 		n_threads = cip->max_subcore_threads;  in can_dynamic_split()
2072 	if (subcore_config_ok(cip->n_subcores + 1, n_threads)) {  in can_dynamic_split()
2073 		cip->max_subcore_threads = n_threads;  in can_dynamic_split()
2074 	} else if (cip->n_subcores <= 2 && cip->total_threads <= 6 &&  in can_dynamic_split()
2084 		if (!can_split_piggybacked_subcores(cip))  in can_dynamic_split()
2090 	sub = cip->n_subcores;  in can_dynamic_split()
2091 	++cip->n_subcores;  in can_dynamic_split()
2092 	cip->total_threads += vc->num_threads;  in can_dynamic_split()
2093 	cip->subcore_threads[sub] = vc->num_threads;  in can_dynamic_split()
2094 	cip->subcore_vm[sub] = vc->kvm;  in can_dynamic_split()
2097 	list_add_tail(&vc->preempt_list, &cip->vcs[sub]);  in can_dynamic_split()
2103 				  struct core_info *cip, int sub)  in can_piggyback_subcore()  argument
2108 	vc = list_first_entry(&cip->vcs[sub], struct kvmppc_vcore,  in can_piggyback_subcore()
2123 	n_thr = cip->subcore_threads[sub] + pvc->num_threads;  in can_piggyback_subcore()
2124 	if (n_thr > cip->max_subcore_threads) {  in can_piggyback_subcore()
2125 		if (!subcore_config_ok(cip->n_subcores, n_thr))  in can_piggyback_subcore()
2127 		cip->max_subcore_threads = n_thr;  in can_piggyback_subcore()
2130 	cip->total_threads += pvc->num_threads;  in can_piggyback_subcore()
2131 	cip->subcore_threads[sub] = n_thr;  in can_piggyback_subcore()
2134 	list_add_tail(&pvc->preempt_list, &cip->vcs[sub]);  in can_piggyback_subcore()
2143 static bool can_piggyback(struct kvmppc_vcore *pvc, struct core_info *cip,  in can_piggyback()  argument
2148 	if (cip->total_threads + pvc->num_threads > target_threads)  in can_piggyback()
2150 	for (sub = 0; sub < cip->n_subcores; ++sub)  in can_piggyback()
2151 		if (cip->subcore_threads[sub] &&  in can_piggyback()
2152 		    can_piggyback_subcore(pvc, cip, sub))  in can_piggyback()
2155 	if (can_dynamic_split(pvc, cip))  in can_piggyback()
2180 static void collect_piggybacks(struct core_info *cip, int target_threads)  in collect_piggybacks()  argument
2199 		if (!can_piggyback(pvc, cip, target_threads)) {  in collect_piggybacks()
2205 		if (cip->total_threads >= target_threads)  in collect_piggybacks()