blk-mq-debugfs.c (c0cb1c6d39060ce04470b10347b7b6f1df77bef5) blk-mq-debugfs.c (8ef1a191038c138d5675933cd69d47747d0d396b)
1/*
2 * Copyright (C) 2017 Facebook
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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303EXPORT_SYMBOL_GPL(__blk_mq_debugfs_rq_show);
304
305int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
306{
307 return __blk_mq_debugfs_rq_show(m, list_entry_rq(v));
308}
309EXPORT_SYMBOL_GPL(blk_mq_debugfs_rq_show);
310
1/*
2 * Copyright (C) 2017 Facebook
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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303EXPORT_SYMBOL_GPL(__blk_mq_debugfs_rq_show);
304
305int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
306{
307 return __blk_mq_debugfs_rq_show(m, list_entry_rq(v));
308}
309EXPORT_SYMBOL_GPL(blk_mq_debugfs_rq_show);
310
311static void *queue_requeue_list_start(struct seq_file *m, loff_t *pos)
312 __acquires(&q->requeue_lock)
313{
314 struct request_queue *q = m->private;
315
316 spin_lock_irq(&q->requeue_lock);
317 return seq_list_start(&q->requeue_list, *pos);
318}
319
320static void *queue_requeue_list_next(struct seq_file *m, void *v, loff_t *pos)
321{
322 struct request_queue *q = m->private;
323
324 return seq_list_next(v, &q->requeue_list, pos);
325}
326
327static void queue_requeue_list_stop(struct seq_file *m, void *v)
328 __releases(&q->requeue_lock)
329{
330 struct request_queue *q = m->private;
331
332 spin_unlock_irq(&q->requeue_lock);
333}
334
335static const struct seq_operations queue_requeue_list_seq_ops = {
336 .start = queue_requeue_list_start,
337 .next = queue_requeue_list_next,
338 .stop = queue_requeue_list_stop,
339 .show = blk_mq_debugfs_rq_show,
340};
341
311static void *hctx_dispatch_start(struct seq_file *m, loff_t *pos)
312 __acquires(&hctx->lock)
313{
314 struct blk_mq_hw_ctx *hctx = m->private;
315
316 spin_lock(&hctx->lock);
317 return seq_list_start(&hctx->dispatch, *pos);
318}

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660 .read = seq_read,
661 .write = blk_mq_debugfs_write,
662 .llseek = seq_lseek,
663 .release = blk_mq_debugfs_release,
664};
665
666static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
667 {"poll_stat", 0400, queue_poll_stat_show},
342static void *hctx_dispatch_start(struct seq_file *m, loff_t *pos)
343 __acquires(&hctx->lock)
344{
345 struct blk_mq_hw_ctx *hctx = m->private;
346
347 spin_lock(&hctx->lock);
348 return seq_list_start(&hctx->dispatch, *pos);
349}

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691 .read = seq_read,
692 .write = blk_mq_debugfs_write,
693 .llseek = seq_lseek,
694 .release = blk_mq_debugfs_release,
695};
696
697static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
698 {"poll_stat", 0400, queue_poll_stat_show},
699 {"requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops},
668 {"state", 0600, queue_state_show, queue_state_write},
669 {},
670};
671
672static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
673 {"state", 0400, hctx_state_show},
674 {"flags", 0400, hctx_flags_show},
675 {"dispatch", 0400, .seq_ops = &hctx_dispatch_seq_ops},

--- 214 unchanged lines hidden --- 		700 {"state", 0600, queue_state_show, queue_state_write},
701 {},
702};
703
704static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
705 {"state", 0400, hctx_state_show},
706 {"flags", 0400, hctx_flags_show},
707 {"dispatch", 0400, .seq_ops = &hctx_dispatch_seq_ops},

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