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ath5k: add debugfs file for queue debugging

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Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bruno Randolf 2010-06-07 13:11:40 +09:00 committed by John W. Linville
parent 20fbed21e9
commit 3cfd43f484
2 changed files with 67 additions and 0 deletions
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66
drivers/net/wireless/ath/ath5k/debug.c
View File

@ -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 */
void
@ -778,6 +838,11 @@ ath5k_debug_init_device(struct ath5k_softc *sc)
S_IWUSR | S_IRUSR,
sc->debug.debugfs_phydir, sc,
&fops_ani);
sc->debug.debugfs_queue = debugfs_create_file("queue",
S_IWUSR | S_IRUSR,
sc->debug.debugfs_phydir, sc,
&fops_queue);
}
void
@ -796,6 +861,7 @@ ath5k_debug_finish_device(struct ath5k_softc *sc)
debugfs_remove(sc->debug.debugfs_antenna);
debugfs_remove(sc->debug.debugfs_frameerrors);
debugfs_remove(sc->debug.debugfs_ani);
debugfs_remove(sc->debug.debugfs_queue);
debugfs_remove(sc->debug.debugfs_phydir);
}

1
drivers/net/wireless/ath/ath5k/debug.h
View File

@ -77,6 +77,7 @@ struct ath5k_dbg_info {
struct dentry *debugfs_antenna;
struct dentry *debugfs_frameerrors;
struct dentry *debugfs_ani;
struct dentry *debugfs_queue;
};
/**