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NTB: Fix transport stats for multiple devices

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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: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Dave Jiang 2015-07-13 08:07:09 -04:00 • committed by Jon Mason
parent da2e5ae561
commit c8650fd03d
1 changed files with 10 additions and 2 deletions
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12
drivers/ntb/ntb_transport.c
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@ -212,6 +212,8 @@ struct ntb_transport_ctx {
bool link_is_up; bool link_is_up;
struct delayed_work link_work; struct delayed_work link_work;
struct work_struct link_cleanup; struct work_struct link_cleanup;
struct dentry *debugfs_node_dir;
}; };
enum { 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_frame = min(transport_mtu, tx_size / 2);
qp->tx_max_entry = tx_size / qp->tx_max_frame; qp->tx_max_entry = tx_size / qp->tx_max_frame;
if (nt_debugfs_dir) { if (nt->debugfs_node_dir) {
char debugfs_name[4]; char debugfs_name[4];
snprintf(debugfs_name, 4, "qp%d", qp_num); snprintf(debugfs_name, 4, "qp%d", qp_num);
qp->debugfs_dir = debugfs_create_dir(debugfs_name, 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_stats = debugfs_create_file("stats", S_IRUSR,
qp->debugfs_dir, qp, qp->debugfs_dir, qp,
@ -1053,6 +1055,12 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev)
goto err2; 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++) { for (i = 0; i < qp_count; i++) {
rc = ntb_transport_init_queue(nt, i); rc = ntb_transport_init_queue(nt, i);
if (rc) if (rc)