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ath5k: use DECLARE_EWMA

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This reduces code size slightly (at least on x86/64) while also
removing memory consumption by two unsigned long values for each
ath5k device.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2015-08-19 09:46:20 +02:00 committed by David S. Miller
parent 5377d75823
commit 46f26ddf56
5 changed files with 8 additions and 7 deletions
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1
drivers/net/wireless/ath/ath5k/Kconfig
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@ -5,7 +5,6 @@ config ATH5K
select MAC80211_LEDS
select LEDS_CLASS
select NEW_LEDS
select AVERAGE
select ATH5K_AHB if ATH25
select ATH5K_PCI if !ATH25
---help---

4
drivers/net/wireless/ath/ath5k/ani.c
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@ -223,7 +223,7 @@ static void
ath5k_ani_raise_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as,
bool ofdm_trigger)
{
int rssi = ewma_read(&ah->ah_beacon_rssi_avg);
int rssi = ewma_beacon_rssi_read(&ah->ah_beacon_rssi_avg);
ATH5K_DBG_UNLIMIT(ah, ATH5K_DEBUG_ANI, "raise immunity (%s)",
ofdm_trigger ? "ODFM" : "CCK");
@ -309,7 +309,7 @@ ath5k_ani_raise_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as,
static void
ath5k_ani_lower_immunity(struct ath5k_hw *ah, struct ath5k_ani_state *as)
{
int rssi = ewma_read(&ah->ah_beacon_rssi_avg);
int rssi = ewma_beacon_rssi_read(&ah->ah_beacon_rssi_avg);
ATH5K_DBG_UNLIMIT(ah, ATH5K_DEBUG_ANI, "lower immunity");

4
drivers/net/wireless/ath/ath5k/ath5k.h
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@ -1252,6 +1252,8 @@ struct ath5k_statistics {
#define ATH5K_TXQ_LEN_MAX (ATH_TXBUF / 4) /* bufs per queue */
#define ATH5K_TXQ_LEN_LOW (ATH5K_TXQ_LEN_MAX / 2) /* low mark */
DECLARE_EWMA(beacon_rssi, 1024, 8)
/* Driver state associated with an instance of a device */
struct ath5k_hw {
struct ath_common common;
@ -1432,7 +1434,7 @@ struct ath5k_hw {
struct ath5k_nfcal_hist ah_nfcal_hist;
/* average beacon RSSI in our BSS (used by ANI) */
struct ewma ah_beacon_rssi_avg;
struct ewma_beacon_rssi ah_beacon_rssi_avg;
/* noise floor from last periodic calibration */
s32 ah_noise_floor;

4
drivers/net/wireless/ath/ath5k/base.c
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@ -1430,7 +1430,7 @@ ath5k_receive_frame(struct ath5k_hw *ah, struct sk_buff *skb,
trace_ath5k_rx(ah, skb);
if (ath_is_mybeacon(common, (struct ieee80211_hdr *)skb->data)) {
ewma_add(&ah->ah_beacon_rssi_avg, rs->rs_rssi);
ewma_beacon_rssi_add(&ah->ah_beacon_rssi_avg, rs->rs_rssi);
/* check beacons in IBSS mode */
if (ah->opmode == NL80211_IFTYPE_ADHOC)
@ -2936,7 +2936,7 @@ ath5k_reset(struct ath5k_hw *ah, struct ieee80211_channel *chan,
ah->ah_cal_next_short = jiffies +
msecs_to_jiffies(ATH5K_TUNE_CALIBRATION_INTERVAL_SHORT);
ewma_init(&ah->ah_beacon_rssi_avg, 1024, 8);
ewma_beacon_rssi_init(&ah->ah_beacon_rssi_avg);
/* clear survey data and cycle counters */
memset(&ah->survey, 0, sizeof(ah->survey));

2
drivers/net/wireless/ath/ath5k/debug.c
View File

@ -722,7 +722,7 @@ static ssize_t read_file_ani(struct file *file, char __user *user_buf,
st->mib_intr);
len += snprintf(buf + len, sizeof(buf) - len,
"beacon RSSI average:\t%d\n",
(int)ewma_read(&ah->ah_beacon_rssi_avg));
(int)ewma_beacon_rssi_read(&ah->ah_beacon_rssi_avg));
#define CC_PRINT(_struct, _field) \
_struct._field, \