ath9k_htc: Add a debugfs file to dump TX slot information (01f684de) · Commits · 戴 / test

drivers/net/wireless/ath/ath9k/htc.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -338,6 +338,7 @@ struct ath9k_debug {
		struct dentry *debugfs_tgt_stats;
		struct dentry *debugfs_xmit;
		struct dentry *debugfs_recv;
		struct dentry *debugfs_slot;
		struct ath_tx_stats tx_stats;
		struct ath_rx_stats rx_stats;
		u32 txrate;

drivers/net/wireless/ath/ath9k/htc_drv_debug.c

+42 −0

Original line number	Diff line number	Diff line
		@@ -244,6 +244,41 @@ static const struct file_operations fops_recv = {
		.llseek = default_llseek,
		};

		static ssize_t read_file_slot(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		struct ath9k_htc_priv *priv = file->private_data;
		char buf[512];
		unsigned int len = 0;

		spin_lock_bh(&priv->tx.tx_lock);

		len += snprintf(buf + len, sizeof(buf) - len, "TX slot bitmap : ");

		len += bitmap_scnprintf(buf + len, sizeof(buf) - len,
		priv->tx.tx_slot, MAX_TX_BUF_NUM);

		len += snprintf(buf + len, sizeof(buf) - len, "\n");

		len += snprintf(buf + len, sizeof(buf) - len,
		"Used slots : %d\n",
		bitmap_weight(priv->tx.tx_slot, MAX_TX_BUF_NUM));

		spin_unlock_bh(&priv->tx.tx_lock);

		if (len > sizeof(buf))
		len = sizeof(buf);

		return simple_read_from_buffer(user_buf, count, ppos, buf, len);
		}

		static const struct file_operations fops_slot = {
		.read = read_file_slot,
		.open = ath9k_debugfs_open,
		.owner = THIS_MODULE,
		.llseek = default_llseek,
		};

		int ath9k_htc_init_debug(struct ath_hw *ah)
		{
		struct ath_common *common = ath9k_hw_common(ah);
		@@ -276,6 +311,12 @@ int ath9k_htc_init_debug(struct ath_hw *ah)
		if (!priv->debug.debugfs_recv)
		goto err;

		priv->debug.debugfs_slot = debugfs_create_file("slot", S_IRUSR,
		priv->debug.debugfs_phy,
		priv, &fops_slot);
		if (!priv->debug.debugfs_slot)
		goto err;

		return 0;

		err:
		@@ -288,6 +329,7 @@ void ath9k_htc_exit_debug(struct ath_hw *ah)
		struct ath_common *common = ath9k_hw_common(ah);
		struct ath9k_htc_priv priv = (struct ath9k_htc_priv ) common->priv;

		debugfs_remove(priv->debug.debugfs_slot);
		debugfs_remove(priv->debug.debugfs_recv);
		debugfs_remove(priv->debug.debugfs_xmit);
		debugfs_remove(priv->debug.debugfs_tgt_stats);

Admin message