[PATCH v11 net-next 7/8] net: ena: View PHC stats using debugfs
From: David Arinzon <darinzon@amazon.com>
Date: 2025-05-26 06:12:02
Subsystem:
amazon ethernet drivers, networking drivers, the rest · Maintainers:
Arthur Kiyanovski, David Arinzon, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add an entry named `phc_stats` to view the PHC statistics. If PHC is enabled, the stats are printed, as below: phc_cnt: 0 phc_exp: 0 phc_skp: 0 phc_err_dv: 0 phc_err_ts: 0 If PHC is disabled, no statistics will be displayed. Signed-off-by: David Arinzon <darinzon@amazon.com> --- drivers/net/ethernet/amazon/ena/ena_debugfs.c | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/drivers/net/ethernet/amazon/ena/ena_debugfs.c b/drivers/net/ethernet/amazon/ena/ena_debugfs.c
index d9327cd8..46ed8098 100644
--- a/drivers/net/ethernet/amazon/ena/ena_debugfs.c
+++ b/drivers/net/ethernet/amazon/ena/ena_debugfs.c@@ -8,6 +8,35 @@ #include <linux/seq_file.h> #include <linux/pci.h> #include "ena_debugfs.h" +#include "ena_phc.h" + +static int phc_stats_show(struct seq_file *file, void *priv) +{ + struct ena_adapter *adapter = file->private; + + if (!ena_phc_is_active(adapter)) + return 0; + + seq_printf(file, + "phc_cnt: %llu\n", + adapter->ena_dev->phc.stats.phc_cnt); + seq_printf(file, + "phc_exp: %llu\n", + adapter->ena_dev->phc.stats.phc_exp); + seq_printf(file, + "phc_skp: %llu\n", + adapter->ena_dev->phc.stats.phc_skp); + seq_printf(file, + "phc_err_dv: %llu\n", + adapter->ena_dev->phc.stats.phc_err_dv); + seq_printf(file, + "phc_err_ts: %llu\n", + adapter->ena_dev->phc.stats.phc_err_ts); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(phc_stats); void ena_debugfs_init(struct net_device *dev) {
@@ -15,6 +44,12 @@ void ena_debugfs_init(struct net_device *dev) adapter->debugfs_base = debugfs_create_dir(dev_name(&adapter->pdev->dev), NULL); + + debugfs_create_file("phc_stats", + 0400, + adapter->debugfs_base, + adapter, + &phc_stats_fops); } void ena_debugfs_terminate(struct net_device *dev)
--
2.47.1