1 // SPDX-License-Identifier: GPL-2.0-only
15  * printk() is not safe in MCE context. This is a lock-less memory allocator
16  * used to save error information organized in a lock-less list.
29  * Compare the record "t" with each of the records on list "l" to see if
32 static bool is_duplicate_mce_record(struct mce_evt_llist *t, struct mce_evt_llist *l)  in is_duplicate_mce_record()  argument
37 	m1 = &t->mce;  in is_duplicate_mce_record()
39 	llist_for_each_entry(node, &l->llnode, llnode) {  in is_duplicate_mce_record()
40 		m2 = &node->mce;  in is_duplicate_mce_record()
49  * The system has panicked - we'd like to peruse the list of MCE records
57 	struct llist_node *head;  in mce_gen_pool_prepare_records()  local
59 	struct mce_evt_llist *node, *t;  in mce_gen_pool_prepare_records()  local
61 	head = llist_del_all(&mce_event_llist);  in mce_gen_pool_prepare_records()
62 	if (!head)  in mce_gen_pool_prepare_records()
66 	llist_for_each_entry_safe(node, t, head, llnode) {  in mce_gen_pool_prepare_records()
67 		if (!is_duplicate_mce_record(node, t))  in mce_gen_pool_prepare_records()
68 			llist_add(&node->llnode, &new_head);  in mce_gen_pool_prepare_records()
76 	struct llist_node *head;  in mce_gen_pool_process()  local
80 	head = llist_del_all(&mce_event_llist);  in mce_gen_pool_process()
81 	if (!head)  in mce_gen_pool_process()
84 	head = llist_reverse_order(head);  in mce_gen_pool_process()
85 	llist_for_each_entry_safe(node, tmp, head, llnode) {  in mce_gen_pool_process()
86 		mce = &node->mce;  in mce_gen_pool_process()
102 		return -EINVAL;  in mce_gen_pool_add()
105 		return -EINVAL;  in mce_gen_pool_add()
110 		return -ENOMEM;  in mce_gen_pool_add()
113 	memcpy(&node->mce, mce, sizeof(*mce));  in mce_gen_pool_add()
114 	llist_add(&node->llnode, &mce_event_llist);  in mce_gen_pool_add()
123 	int ret = -ENOMEM;  in mce_gen_pool_create()
127 	gpool = gen_pool_create(order, -1);  in mce_gen_pool_create()
138 	ret = gen_pool_add(gpool, (unsigned long)mce_pool, mce_poolsz, -1);  in mce_gen_pool_create()