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author | Sujith Manoharan <Sujith.Manoharan@atheros.com> | 2011-04-13 11:26:26 +0530 |
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committer | John W. Linville <linville@tuxdriver.com> | 2011-04-13 15:24:23 -0400 |
commit | 01f684de7cc0641a9ee968f2d2c45c3a67241252 (patch) | |
tree | 531e76a1ae8239bc15bedaa39f28a46dd482d12f | |
parent | 27876a29de221186c9d5883e5fe5f6da18ef9a45 (diff) | |
download | op-kernel-dev-01f684de7cc0641a9ee968f2d2c45c3a67241252.zip op-kernel-dev-01f684de7cc0641a9ee968f2d2c45c3a67241252.tar.gz |
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>
-rw-r--r-- | drivers/net/wireless/ath/ath9k/htc.h | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_debug.c | 42 |
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h index 6c103ed..b9c7bec 100644 --- a/drivers/net/wireless/ath/ath9k/htc.h +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -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; diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c index 91a486c..119cc54 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_debug.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_debug.c @@ -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); |