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net: ena: View PHC stats using debugfs

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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>
Link: https://patch.msgid.link/20250617110545.5659-9-darinzon@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Arinzon 2025-06-17 14:05:44 +03:00 committed by Jakub Kicinski
parent 60e28350b1
commit e14521e97b
1 changed files with 35 additions and 0 deletions
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35
drivers/net/ethernet/amazon/ena/ena_debugfs.c
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@ -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)