From: Ben Greear <greearb@candelatech.com>
Date: Mon, 10 Jan 2011 07:11:50 +0000 (-0800)
Subject: ath9k: More xmit queue debugfs information.
X-Git-Tag: firefly_0821_release~7613^2~2196^2~448^2~23
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=71e025a5a630681ad8b37d4426a994d199976ec9;p=firefly-linux-kernel-4.4.55.git

ath9k: More xmit queue debugfs information.

To try to figure out why xmit logic hangs.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 650f00f59d79..9e009ccd0069 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -679,6 +679,32 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
 		PRQLE(tmp, txq_fifo[i]);
 	}
 
+	/* Print out more detailed queue-info */
+	for (i = 0; i <= WME_AC_BK; i++) {
+		struct ath_txq *txq = &(sc->tx.txq[i]);
+		struct ath_atx_ac *ac;
+		struct ath_atx_tid *tid;
+		if (len >= size)
+			goto done;
+		spin_lock_bh(&txq->axq_lock);
+		if (!list_empty(&txq->axq_acq)) {
+			ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac,
+					      list);
+			len += snprintf(buf + len, size - len,
+					"txq[%i] first-ac: %p sched: %i\n",
+					i, ac, ac->sched);
+			if (list_empty(&ac->tid_q) || (len >= size))
+				goto done_for;
+			tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
+					       list);
+			len += snprintf(buf + len, size - len,
+					" first-tid: %p sched: %i paused: %i\n",
+					tid, tid->sched, tid->paused);
+		}
+	done_for:
+		spin_unlock_bh(&txq->axq_lock);
+	}
+
 done:
 	if (len > size)
 		len = size;