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Commit 3cfd43f4 authored by Bruno Randolf's avatar Bruno Randolf Committed by John W. Linville
Browse files

ath5k: add debugfs file for queue debugging 



Signed-off-by: default avatarBruno Randolf <br1@einfach.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 20fbed21

drivers/net/wireless/ath/ath5k/debug.c

+66 −0
Original line number Original line Diff line number Diff line
@@ -735,6 +735,66 @@ static const struct file_operations fops_ani = { 
};

};









/* debugfs: queues etc */



static ssize_t read_file_queue(struct file *file, char __user *user_buf,

				   size_t count, loff_t *ppos)

{

	struct ath5k_softc *sc = file->private_data;

	char buf[700];

	unsigned int len = 0;



	struct ath5k_txq *txq;

	struct ath5k_buf *bf, *bf0;

	int i, n = 0;



	len += snprintf(buf+len, sizeof(buf)-len,

			"available txbuffers: %d\n", sc->txbuf_len);



	for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) {

		txq = &sc->txqs[i];



		len += snprintf(buf+len, sizeof(buf)-len,

			"%02d: %ssetup\n", i, txq->setup ? "" : "not ");



		if (!txq->setup)

			continue;



		list_for_each_entry_safe(bf, bf0, &txq->q, list)

			n++;

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

	}



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

}



static ssize_t write_file_queue(struct file *file,

				 const char __user *userbuf,

				 size_t count, loff_t *ppos)

{

	struct ath5k_softc *sc = file->private_data;

	char buf[20];



	if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))

		return -EFAULT;



	if (strncmp(buf, "start", 5) == 0)

		ieee80211_wake_queues(sc->hw);

	else if (strncmp(buf, "stop", 4) == 0)

		ieee80211_stop_queues(sc->hw);



	return count;

}





static const struct file_operations fops_queue = {

	.read = read_file_queue,

	.write = write_file_queue,

	.open = ath5k_debugfs_open,

	.owner = THIS_MODULE,

};





/* init */

/* init */





void

void
@@ -778,6 +838,11 @@ ath5k_debug_init_device(struct ath5k_softc *sc) 
				S_IWUSR | S_IRUSR,

				S_IWUSR | S_IRUSR,

				sc->debug.debugfs_phydir, sc,

				sc->debug.debugfs_phydir, sc,

				&fops_ani);

				&fops_ani);



	sc->debug.debugfs_queue = debugfs_create_file("queue",

				S_IWUSR | S_IRUSR,

				sc->debug.debugfs_phydir, sc,

				&fops_queue);

}

}





void

void
@@ -796,6 +861,7 @@ ath5k_debug_finish_device(struct ath5k_softc *sc) 
	debugfs_remove(sc->debug.debugfs_antenna);

	debugfs_remove(sc->debug.debugfs_antenna);

	debugfs_remove(sc->debug.debugfs_frameerrors);

	debugfs_remove(sc->debug.debugfs_frameerrors);

	debugfs_remove(sc->debug.debugfs_ani);

	debugfs_remove(sc->debug.debugfs_ani);

	debugfs_remove(sc->debug.debugfs_queue);

	debugfs_remove(sc->debug.debugfs_phydir);

	debugfs_remove(sc->debug.debugfs_phydir);

}

}

drivers/net/wireless/ath/ath5k/debug.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -77,6 +77,7 @@ struct ath5k_dbg_info { 
	struct dentry		*debugfs_antenna;

	struct dentry		*debugfs_antenna;

	struct dentry		*debugfs_frameerrors;

	struct dentry		*debugfs_frameerrors;

	struct dentry		*debugfs_ani;

	struct dentry		*debugfs_ani;

	struct dentry		*debugfs_queue;

};

};





/**

/**