mirror of
https://github.com/torvalds/linux.git
synced 2026-04-27 19:12:29 -04:00
25ba596d13
Add PCIe hardware statistics support to the fbnic driver. These stats provide insight into PCIe transaction performance and error conditions. Which includes, read/write and completion TLP counts and DWORD counts and debug counters for tag, completion credit and NP credit exhaustion The stats are exposed via debugfs and can be used to monitor PCIe performance and debug PCIe issues. Signed-off-by: Sanman Pradhan <sanman.p211993@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20241115015344.757567-5-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
#include "fbnic.h"
|
|
|
|
static struct dentry *fbnic_dbg_root;
|
|
|
|
static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)
|
|
{
|
|
struct fbnic_dev *fbd = s->private;
|
|
|
|
rtnl_lock();
|
|
fbnic_get_hw_stats(fbd);
|
|
|
|
seq_printf(s, "ob_rd_tlp: %llu\n", fbd->hw_stats.pcie.ob_rd_tlp.value);
|
|
seq_printf(s, "ob_rd_dword: %llu\n",
|
|
fbd->hw_stats.pcie.ob_rd_dword.value);
|
|
seq_printf(s, "ob_wr_tlp: %llu\n", fbd->hw_stats.pcie.ob_wr_tlp.value);
|
|
seq_printf(s, "ob_wr_dword: %llu\n",
|
|
fbd->hw_stats.pcie.ob_wr_dword.value);
|
|
seq_printf(s, "ob_cpl_tlp: %llu\n",
|
|
fbd->hw_stats.pcie.ob_cpl_tlp.value);
|
|
seq_printf(s, "ob_cpl_dword: %llu\n",
|
|
fbd->hw_stats.pcie.ob_cpl_dword.value);
|
|
seq_printf(s, "ob_rd_no_tag: %llu\n",
|
|
fbd->hw_stats.pcie.ob_rd_no_tag.value);
|
|
seq_printf(s, "ob_rd_no_cpl_cred: %llu\n",
|
|
fbd->hw_stats.pcie.ob_rd_no_cpl_cred.value);
|
|
seq_printf(s, "ob_rd_no_np_cred: %llu\n",
|
|
fbd->hw_stats.pcie.ob_rd_no_np_cred.value);
|
|
rtnl_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_pcie_stats);
|
|
|
|
void fbnic_dbg_fbd_init(struct fbnic_dev *fbd)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(fbd->dev);
|
|
const char *name = pci_name(pdev);
|
|
|
|
fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root);
|
|
debugfs_create_file("pcie_stats", 0400, fbd->dbg_fbd, fbd,
|
|
&fbnic_dbg_pcie_stats_fops);
|
|
}
|
|
|
|
void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)
|
|
{
|
|
debugfs_remove_recursive(fbd->dbg_fbd);
|
|
fbd->dbg_fbd = NULL;
|
|
}
|
|
|
|
void fbnic_dbg_init(void)
|
|
{
|
|
fbnic_dbg_root = debugfs_create_dir(fbnic_driver_name, NULL);
|
|
}
|
|
|
|
void fbnic_dbg_exit(void)
|
|
{
|
|
debugfs_remove_recursive(fbnic_dbg_root);
|
|
fbnic_dbg_root = NULL;
|
|
}
|