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ath9k: Add a debugfs file to dump queue statistics

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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2012-11-21 18:13:12 +05:30 • committed by John W. Linville
parent 78ef731ce5
commit c0b74876ee
1 changed files with 53 additions and 0 deletions
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53
drivers/net/wireless/ath/ath9k/debug.c
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@ -558,6 +558,50 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
return retval; return retval;
} }
static ssize_t read_file_queues(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_txq *txq;
char *buf;
unsigned int len = 0, size = 1024;
ssize_t retval = 0;
int i;
char *qname[4] = {"VO", "VI", "BE", "BK"};
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
txq = sc->tx.txq_map[i];
len += snprintf(buf + len, size - len, "(%s): ", qname[i]);
ath_txq_lock(sc, txq);
len += snprintf(buf + len, size - len, "%s: %d ",
"qnum", txq->axq_qnum);
len += snprintf(buf + len, size - len, "%s: %2d ",
"qdepth", txq->axq_depth);
len += snprintf(buf + len, size - len, "%s: %2d ",
"ampdu-depth", txq->axq_ampdu_depth);
len += snprintf(buf + len, size - len, "%s: %3d ",
"pending", txq->pending_frames);
len += snprintf(buf + len, size - len, "%s: %d\n",
"stopped", txq->stopped);
ath_txq_unlock(sc, txq);
}
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static ssize_t read_file_stations(struct file *file, char __user *user_buf, static ssize_t read_file_stations(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos) size_t count, loff_t *ppos)
{ {
@ -828,6 +872,13 @@ static const struct file_operations fops_xmit = {
.llseek = default_llseek, .llseek = default_llseek,
}; };
static const struct file_operations fops_queues = {
.read = read_file_queues,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static const struct file_operations fops_stations = { static const struct file_operations fops_stations = {
.read = read_file_stations, .read = read_file_stations,
.open = simple_open, .open = simple_open,
@ -1553,6 +1604,8 @@ int ath9k_init_debug(struct ath_hw *ah)
&fops_interrupt); &fops_interrupt);
debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc, debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_xmit); &fops_xmit);
debugfs_create_file("queues", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_queues);
debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
&sc->tx.txq_max_pending[IEEE80211_AC_BK]); &sc->tx.txq_max_pending[IEEE80211_AC_BK]);
debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,