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Commit c8650fd0 authored by Dave Jiang's avatar Dave Jiang Committed by Jon Mason
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NTB: Fix transport stats for multiple devices 



Currently the debugfs does not have files for all NTB transport queue
pairs.  When there are multiple NTBs present in a system, the QP names
of the last transport clobber the names of previously added transport
QPs.  Only the last added QPs can be observed via debugfs.

Create a directory per NTB transport to associate the QPs with that
transport.  Name the directory the same as the PCI device.

Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
parent da2e5ae5

drivers/ntb/ntb_transport.c

+10 −2
Original line number Diff line number Diff line
@@ -212,6 +212,8 @@ struct ntb_transport_ctx { 
	bool link_is_up;

	struct delayed_work link_work;

	struct work_struct link_cleanup;



	struct dentry *debugfs_node_dir;

};



enum {
@@ -945,12 +947,12 @@ static int ntb_transport_init_queue(struct ntb_transport_ctx *nt, 
	qp->tx_max_frame = min(transport_mtu, tx_size / 2);

	qp->tx_max_entry = tx_size / qp->tx_max_frame;



	if (nt_debugfs_dir) {

	if (nt->debugfs_node_dir) {

		char debugfs_name[4];



		snprintf(debugfs_name, 4, "qp%d", qp_num);

		qp->debugfs_dir = debugfs_create_dir(debugfs_name,

						     nt_debugfs_dir);

						     nt->debugfs_node_dir);



		qp->debugfs_stats = debugfs_create_file("stats", S_IRUSR,

							qp->debugfs_dir, qp,
@@ -1053,6 +1055,12 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) 
		goto err2;

	}



	if (nt_debugfs_dir) {

		nt->debugfs_node_dir =

			debugfs_create_dir(pci_name(ndev->pdev),

					   nt_debugfs_dir);

	}



	for (i = 0; i < qp_count; i++) {

		rc = ntb_transport_init_queue(nt, i);

		if (rc)