From: Ben Greear <[email protected]> Could be useful for debugging memory consumption issues, and perhaps power-save as well.
Signed-off-by: Ben Greear <[email protected]> --- v2: Use more appropriate length, add comment to explain magic numbers. net/mac80211/debugfs.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index b251b2f7..b7a0493 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -162,6 +162,31 @@ static ssize_t hwflags_read(struct file *file, char __user *user_buf, return rv; } +static ssize_t misc_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + /* Max len of each line is 16 characters, plus 9 for 'pending:\n' */ + size_t bufsz = IEEE80211_MAX_QUEUES * 16 + 9; + char *buf = kzalloc(bufsz, GFP_KERNEL); + char *pos = buf, *end = buf + bufsz - 1; + ssize_t rv; + int i; + int ln; + + pos += scnprintf(pos, end - pos, "pending:\n"); + + for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { + ln = skb_queue_len(&local->pending[i]); + pos += scnprintf(pos, end - pos, "[%i] %d\n", + i, ln); + } + + rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); + kfree(buf); + return rv; +} + static ssize_t queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -182,6 +207,7 @@ static ssize_t queues_read(struct file *file, char __user *user_buf, DEBUGFS_READONLY_FILE_OPS(hwflags); DEBUGFS_READONLY_FILE_OPS(queues); +DEBUGFS_READONLY_FILE_OPS(misc); /* statistics stuff */ @@ -250,6 +276,7 @@ void debugfs_hw_add(struct ieee80211_local *local) DEBUGFS_ADD(total_ps_buffered); DEBUGFS_ADD(wep_iv); DEBUGFS_ADD(queues); + DEBUGFS_ADD(misc); #ifdef CONFIG_PM DEBUGFS_ADD_MODE(reset, 0200); #endif -- 2.4.11
