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Date: Wed, 19 Aug 2015 09:46:20 +0200
From: Johannes Berg <johannes@...solutions.net>
To: linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc: Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 2/4] ath5k: use DECLARE_EWMA
From: Johannes Berg <johannes.berg@...el.com>
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@...el.com>
---
drivers/net/wireless/ath/ath5k/Kconfig | 1 -
drivers/net/wireless/ath/ath5k/ani.c | 4 ++--
drivers/net/wireless/ath/ath5k/ath5k.h | 4 +++-
drivers/net/wireless/ath/ath5k/base.c | 4 ++--
drivers/net/wireless/ath/ath5k/debug.c | 2 +-
5 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/Kconfig b/drivers/net/wireless/ath/ath5k/Kconfig
index 2399a3921762..b1278f9f24ba 100644
--- a/drivers/net/wireless/ath/ath5k/Kconfig
+++ b/drivers/net/wireless/ath/ath5k/Kconfig
@@ -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---
diff --git a/drivers/net/wireless/ath/ath5k/ani.c b/drivers/net/wireless/ath/ath5k/ani.c
index 5c008757662b..38be2702c0e2 100644
--- a/drivers/net/wireless/ath/ath5k/ani.c
+++ b/drivers/net/wireless/ath/ath5k/ani.c
@@ -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");
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index e22b0e778927..fa6e89e5c421 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -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;
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 23552f43d125..342563a3706f 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -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));
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index c70782e8f07b..654a1e33f827 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -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, \
--
2.1.4
--
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