Commit e14521e9 authored by David Arinzon's avatar David Arinzon Committed by Jakub Kicinski
Browse files

net: ena: View PHC stats using debugfs 



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: default avatarDavid Arinzon <darinzon@amazon.com>
Link: https://patch.msgid.link/20250617110545.5659-9-darinzon@amazon.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 60e28350

drivers/net/ethernet/amazon/ena/ena_debugfs.c

+35 −0
Original line number Diff line number Diff line
@@ -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)