88 lines
3.1 KiB
Diff
88 lines
3.1 KiB
Diff
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From: Franky Lin <frankyl@broadcom.com>
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Date: Thu, 20 Aug 2015 22:06:04 +0200
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Subject: [PATCH] brcmfmac: add debugfs entry for msgbuf statistics
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Expose ring buffer read/write pointers and other useful statistics
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through debugfs.
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Reviewed-by: Arend Van Spriel <arend@broadcom.com>
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Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
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Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
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Signed-off-by: Franky Lin <frankyl@broadcom.com>
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Signed-off-by: Arend van Spriel <arend@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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--- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
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+++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
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@@ -1360,6 +1360,60 @@ void brcmf_msgbuf_delete_flowring(struct
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}
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}
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+#ifdef DEBUG
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+static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
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+{
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+ struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
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+ struct brcmf_pub *drvr = bus_if->drvr;
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+ struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
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+ struct brcmf_commonring *commonring;
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+ u16 i;
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+ struct brcmf_flowring_ring *ring;
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+ struct brcmf_flowring_hash *hash;
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+
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+ commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
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+ seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
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+ commonring->r_ptr, commonring->w_ptr, commonring->depth);
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+ commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
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+ seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
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+ commonring->r_ptr, commonring->w_ptr, commonring->depth);
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+ commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
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+ seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
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+ commonring->r_ptr, commonring->w_ptr, commonring->depth);
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+ commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
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+ seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
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+ commonring->r_ptr, commonring->w_ptr, commonring->depth);
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+ commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
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+ seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
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+ commonring->r_ptr, commonring->w_ptr, commonring->depth);
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+
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+ seq_printf(seq, "\nh2d_flowrings: depth %u\n",
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+ BRCMF_H2D_TXFLOWRING_MAX_ITEM);
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+ seq_puts(seq, "Active flowrings:\n");
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+ hash = msgbuf->flow->hash;
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+ for (i = 0; i < msgbuf->flow->nrofrings; i++) {
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+ if (!msgbuf->flow->rings[i])
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+ continue;
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+ ring = msgbuf->flow->rings[i];
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+ if (ring->status != RING_OPEN)
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+ continue;
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+ commonring = msgbuf->flowrings[i];
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+ hash = &msgbuf->flow->hash[ring->hash_id];
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+ seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
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+ " ifidx %u, fifo %u, da %pM\n",
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+ i, commonring->r_ptr, commonring->w_ptr,
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+ skb_queue_len(&ring->skblist), ring->blocked,
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+ hash->ifidx, hash->fifo, hash->mac);
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+ }
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+
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+ return 0;
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+}
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+#else
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+static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
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+{
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+ return 0;
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+}
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+#endif
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int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
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{
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@@ -1460,6 +1514,8 @@ int brcmf_proto_msgbuf_attach(struct brc
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spin_lock_init(&msgbuf->flowring_work_lock);
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INIT_LIST_HEAD(&msgbuf->work_queue);
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+ brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
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+
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return 0;
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fail:
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