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wifi: mac80211: add debugfs file to display per-phy AQL pending airtime

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Now that the global pending airtime is more relevant for airtime fairness,
it makes sense to make it accessible via debugfs for debugging

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-6-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2022-06-25 23:24:10 +02:00 committed by Johannes Berg
parent 8e4bac0671
commit 3db2c5604f
1 changed files with 31 additions and 0 deletions
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31
net/mac80211/debugfs.c
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@ -201,6 +201,36 @@ static const struct file_operations airtime_flags_ops = {
.llseek = default_llseek,
};
static ssize_t aql_pending_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_local *local = file->private_data;
char buf[400];
int len = 0;
len = scnprintf(buf, sizeof(buf),
"AC AQL pending\n"
"VO %u us\n"
"VI %u us\n"
"BE %u us\n"
"BK %u us\n"
"total %u us\n",
atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VO]),
atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_VI]),
atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BE]),
atomic_read(&local->aql_ac_pending_airtime[IEEE80211_AC_BK]),
atomic_read(&local->aql_total_pending_airtime));
return simple_read_from_buffer(user_buf, count, ppos,
buf, len);
}
static const struct file_operations aql_pending_ops = {
.read = aql_pending_read,
.open = simple_open,
.llseek = default_llseek,
};
static ssize_t aql_txq_limit_read(struct file *file,
char __user *user_buf,
size_t count,
@ -631,6 +661,7 @@ void debugfs_hw_add(struct ieee80211_local *local)
DEBUGFS_ADD(hw_conf);
DEBUGFS_ADD_MODE(force_tx_status, 0600);
DEBUGFS_ADD_MODE(aql_enable, 0600);
DEBUGFS_ADD(aql_pending);
if (local->ops->wake_tx_queue)
DEBUGFS_ADD_MODE(aqm, 0600);