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mq-deadline: add debugfs attributes

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Expose the fifo lists, cached next requests, batching state, and
dispatch list. It'd also be possible to add the sorted lists, but there
aren't already seq_file helpers for rbtrees.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Omar Sandoval
2017-05-04 00:31:34 -07:00
committed by Jens Axboe
parent 16b738f651
commit daaadb3e94
3 changed files with 131 additions and 2 deletions
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block/blk-mq-debugfs.c
+7 -2
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@@ -267,9 +267,8 @@ static const char *const rqf_name[] = {
};
#undef RQF_NAME
int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq)
{
struct request *rq = list_entry_rq(v);
const struct blk_mq_ops *const mq_ops = rq->q->mq_ops;
const unsigned int op = rq->cmd_flags & REQ_OP_MASK;
@@ -291,6 +290,12 @@ int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
seq_puts(m, "}\n");
return 0;
}
EXPORT_SYMBOL_GPL(__blk_mq_debugfs_rq_show);
int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
{
return __blk_mq_debugfs_rq_show(m, list_entry_rq(v));
}
EXPORT_SYMBOL_GPL(blk_mq_debugfs_rq_show);
static void *hctx_dispatch_start(struct seq_file *m, loff_t *pos)