@@ -170,6 +170,62 @@ static const struct file_operations dpaa2_dbg_ch_ops = {
.release = single_release,
};
+static ssize_t dpaa2_dbg_reset_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct dpaa2_eth_priv *priv = file->private_data;
+ struct dpaa2_eth_drv_stats *percpu_extras;
+ struct rtnl_link_stats64 *percpu_stats;
+ struct dpaa2_eth_channel *ch;
+ struct dpaa2_eth_fq *fq;
+ int i;
+
+ for_each_online_cpu(i) {
+ percpu_stats = per_cpu_ptr(priv->percpu_stats, i);
+ memset(percpu_stats, 0, sizeof(*percpu_stats));
+
+ percpu_extras = per_cpu_ptr(priv->percpu_extras, i);
+ memset(percpu_extras, 0, sizeof(*percpu_extras));
+ }
+
+ for (i = 0; i < priv->num_fqs; i++) {
+ fq = &priv->fq[i];
+ memset(&fq->stats, 0, sizeof(fq->stats));
+ }
+
+ for (i = 0; i < priv->num_channels; i++) {
+ ch = priv->channel[i];
+ memset(&ch->stats, 0, sizeof(ch->stats));
+ }
+
+ return count;
+}
+
+static const struct file_operations dpaa2_dbg_reset_ops = {
+ .open = simple_open,
+ .write = dpaa2_dbg_reset_write,
+};
+
+static ssize_t dpaa2_dbg_reset_mc_write(struct file *file,
+ const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct dpaa2_eth_priv *priv = file->private_data;
+ int err;
+
+ err = dpni_reset_statistics(priv->mc_io, 0, priv->mc_token);
+ if (err)
+ netdev_err(priv->net_dev,
+ "dpni_reset_statistics() failed %d\n", err);
+
+ return count;
+}
+
+static const struct file_operations dpaa2_dbg_reset_mc_ops = {
+ .open = simple_open,
+ .write = dpaa2_dbg_reset_mc_write,
+};
+
void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
{
struct dentry *dir;
@@ -186,6 +242,14 @@ void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
/* per-fq stats file */
debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops);
+
+ /* reset stats */
+ debugfs_create_file("reset_stats", 0200, dir, priv,
+ &dpaa2_dbg_reset_ops);
+
+ /* reset MC stats */
+ debugfs_create_file("reset_mc_stats", 0200, dir, priv,
+ &dpaa2_dbg_reset_mc_ops);
}
void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
Export two debugfs control files through which the user can reset the software kept statistics per CPU, per FQ, per channel - reset_stats - as well as those kept by HW - reset_mc_stats. This is especially useful in the context of debugging when there is a need for precise statistics per a run of the test. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> --- .../freescale/dpaa2/dpaa2-eth-debugfs.c | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+)