ath9k_htc: Add a debugfs file to dump TX slot information
Location: ath9k_htc/phy#/slot Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
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27876a29de
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01f684de7c
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@ -338,6 +338,7 @@ struct ath9k_debug {
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struct dentry *debugfs_tgt_stats;
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struct dentry *debugfs_tgt_stats;
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struct dentry *debugfs_xmit;
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struct dentry *debugfs_xmit;
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struct dentry *debugfs_recv;
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struct dentry *debugfs_recv;
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struct dentry *debugfs_slot;
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struct ath_tx_stats tx_stats;
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struct ath_tx_stats tx_stats;
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struct ath_rx_stats rx_stats;
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struct ath_rx_stats rx_stats;
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u32 txrate;
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u32 txrate;
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@ -244,6 +244,41 @@ static const struct file_operations fops_recv = {
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.llseek = default_llseek,
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.llseek = default_llseek,
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};
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};
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static ssize_t read_file_slot(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath9k_htc_priv *priv = file->private_data;
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char buf[512];
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unsigned int len = 0;
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spin_lock_bh(&priv->tx.tx_lock);
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len += snprintf(buf + len, sizeof(buf) - len, "TX slot bitmap : ");
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len += bitmap_scnprintf(buf + len, sizeof(buf) - len,
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priv->tx.tx_slot, MAX_TX_BUF_NUM);
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len += snprintf(buf + len, sizeof(buf) - len, "\n");
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len += snprintf(buf + len, sizeof(buf) - len,
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"Used slots : %d\n",
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bitmap_weight(priv->tx.tx_slot, MAX_TX_BUF_NUM));
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spin_unlock_bh(&priv->tx.tx_lock);
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if (len > sizeof(buf))
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len = sizeof(buf);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static const struct file_operations fops_slot = {
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.read = read_file_slot,
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.open = ath9k_debugfs_open,
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.owner = THIS_MODULE,
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.llseek = default_llseek,
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};
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int ath9k_htc_init_debug(struct ath_hw *ah)
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int ath9k_htc_init_debug(struct ath_hw *ah)
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{
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{
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_common *common = ath9k_hw_common(ah);
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@ -276,6 +311,12 @@ int ath9k_htc_init_debug(struct ath_hw *ah)
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if (!priv->debug.debugfs_recv)
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if (!priv->debug.debugfs_recv)
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goto err;
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goto err;
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priv->debug.debugfs_slot = debugfs_create_file("slot", S_IRUSR,
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priv->debug.debugfs_phy,
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priv, &fops_slot);
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if (!priv->debug.debugfs_slot)
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goto err;
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return 0;
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return 0;
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err:
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err:
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@ -288,6 +329,7 @@ void ath9k_htc_exit_debug(struct ath_hw *ah)
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
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struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
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debugfs_remove(priv->debug.debugfs_slot);
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debugfs_remove(priv->debug.debugfs_recv);
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debugfs_remove(priv->debug.debugfs_recv);
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debugfs_remove(priv->debug.debugfs_xmit);
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debugfs_remove(priv->debug.debugfs_xmit);
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debugfs_remove(priv->debug.debugfs_tgt_stats);
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debugfs_remove(priv->debug.debugfs_tgt_stats);
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