litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

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	Commit message (Expand)	Author	Age
*	plist: Add priority list test	Lai Jiangshan	2011-03-11
*	plist: Shrink struct plist_head	Lai Jiangshan	2011-03-11
*	plist: Make plist debugging raw_spinlock aware	Thomas Gleixner	2009-12-14
*	Use WARN() in lib/	Arjan van de Ven	2008-07-26
*	[PATCH] pi-futex: add plist implementation	Ingo Molnar	2006-06-27

num">1; } return 0; } static void noop_add_request(struct request_queue *q, struct request *rq) { struct noop_data *nd = q->elevator->elevator_data; list_add_tail(&rq->queuelist, &nd->queue); } static struct request * noop_former_request(struct request_queue *q, struct request *rq) { struct noop_data *nd = q->elevator->elevator_data; if (rq->queuelist.prev == &nd->queue) return NULL; return list_entry(rq->queuelist.prev, struct request, queuelist); } static struct request * noop_latter_request(struct request_queue *q, struct request *rq) { struct noop_data *nd = q->elevator->elevator_data; if (rq->queuelist.next == &nd->queue) return NULL; return list_entry(rq->queuelist.next, struct request, queuelist); } static int noop_init_queue(struct request_queue *q) { struct noop_data *nd; nd = kmalloc_node(sizeof(*nd), GFP_KERNEL, q->node); if (!nd) return -ENOMEM; INIT_LIST_HEAD(&nd->queue); q->elevator->elevator_data = nd; return 0; } static void noop_exit_queue(struct elevator_queue *e) { struct noop_data *nd = e->elevator_data; BUG_ON(!list_empty(&nd->queue)); kfree(nd); } static struct elevator_type elevator_noop = { .ops = { .elevator_merge_req_fn = noop_merged_requests, .elevator_dispatch_fn = noop_dispatch, .elevator_add_req_fn = noop_add_request, .elevator_former_req_fn = noop_former_request, .elevator_latter_req_fn = noop_latter_request, .elevator_init_fn = noop_init_queue, .elevator_exit_fn = noop_exit_queue, }, .elevator_name = "noop", .elevator_owner = THIS_MODULE, }; static int __init noop_init(void) { return elv_register(&elevator_noop); } static void __exit noop_exit(void) { elv_unregister(&elevator_noop); } module_init(noop_init); module_exit(noop_exit); MODULE_AUTHOR("Jens Axboe"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("No-op IO scheduler");