Commit 460fd830 authored by Ioana Ciornei's avatar Ioana Ciornei Committed by David S. Miller
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dpaa2-eth: add channel stat to debugfs



Compute the average number of frames processed for each CDAN (Channel
Data Availability Notification) and export it to debugfs detailed
channel stats.

Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ae23aae2
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+6 −3
Original line number Diff line number Diff line
@@ -127,16 +127,19 @@ static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)
	int i;

	seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);
	seq_printf(file, "%s%16s%16s%16s%16s\n",
		   "CHID", "CPU", "Deq busy", "CDANs", "Buf count");
	seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n",
		   "CHID", "CPU", "Deq busy", "Frames", "CDANs",
		   "Avg Frm/CDAN", "Buf count");

	for (i = 0; i < priv->num_channels; i++) {
		ch = priv->channel[i];
		seq_printf(file, "%4d%16d%16llu%16llu%16d\n",
		seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n",
			   ch->ch_id,
			   ch->nctx.desired_cpu,
			   ch->stats.dequeue_portal_busy,
			   ch->stats.frames,
			   ch->stats.cdan,
			   ch->stats.frames / ch->stats.cdan,
			   ch->buf_count);
	}

+1 −0
Original line number Diff line number Diff line
@@ -493,6 +493,7 @@ static int consume_frames(struct dpaa2_eth_channel *ch,
		return 0;

	fq->stats.frames += cleaned;
	ch->stats.frames += cleaned;

	/* A dequeue operation only pulls frames from a single queue
	 * into the store. Return the frame queue as an out param.
+2 −0
Original line number Diff line number Diff line
@@ -288,6 +288,8 @@ struct dpaa2_eth_ch_stats {
	__u64 xdp_tx;
	__u64 xdp_tx_err;
	__u64 xdp_redirect;
	/* Must be last, does not show up in ethtool stats */
	__u64 frames;
};

/* Maximum number of queues associated with a DPNI */
+1 −1
Original line number Diff line number Diff line
@@ -277,7 +277,7 @@ static void dpaa2_eth_get_ethtool_stats(struct net_device *net_dev,
	/* Per-channel stats */
	for (k = 0; k < priv->num_channels; k++) {
		ch_stats = &priv->channel[k]->stats;
		for (j = 0; j < sizeof(*ch_stats) / sizeof(__u64); j++)
		for (j = 0; j < sizeof(*ch_stats) / sizeof(__u64) - 1; j++)
			*((__u64 *)data + i + j) += *((__u64 *)ch_stats + j);
	}
	i += j;