diff options
| author | Felix Fietkau <nbd@nbd.name> | 2022-06-25 23:24:10 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-07-01 10:51:48 +0200 |
| commit | 3db2c5604f39e3760fa67ca8c8905c4b19339230 (patch) | |
| tree | 7f62d521d46983a71b565d8a2203c39bf02b99cf /net/mac80211 | |
| parent | wifi: mac80211: add a per-PHY AQL limit to improve fairness (diff) | |
| download | linux-3db2c5604f39e3760fa67ca8c8905c4b19339230.tar.xz linux-3db2c5604f39e3760fa67ca8c8905c4b19339230.zip | |
wifi: mac80211: add debugfs file to display per-phy AQL pending airtime
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>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/debugfs.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 0c748b1eb023..4d4341249759 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -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); |