ath9k: disable MAC sample debugging, it is almost never used and wastes precious CPU cycles

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30764 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 145 insertions, 0 deletions

diff --git a/package/mac80211/patches/300-pending_work.patch b/package/mac80211/patches/300-pending_work.patch
index d367b9f61..8bb89422e 100644
--- a/package/mac80211/patches/300-pending_work.patch
+++ b/package/mac80211/patches/300-pending_work.patch
@@ -995,3 +995,148 @@
  }
  
  static int cmp_bss(struct cfg80211_bss *a,
+--- a/drivers/net/wireless/ath/ath9k/Kconfig
++++ b/drivers/net/wireless/ath/ath9k/Kconfig
+@@ -81,6 +81,14 @@ config ATH9K_DFS_CERTIFIED
+ 	  developed. At this point enabling this option won't do anything
+ 	  except increase code size.
+ 
++config ATH9K_MAC_DEBUG
++	bool "Atheros MAC statistics"
++	depends on ATH9K_DEBUGFS
++	default y
++	---help---
++	  This option enables collection of statistics for Rx/Tx status
++	  data and some other MAC related statistics
++
+ config ATH9K_RATE_CONTROL
+ 	bool "Atheros ath9k rate control"
+ 	depends on ATH9K
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -818,6 +818,7 @@ void ath_debug_stat_tx(struct ath_softc 
+ 	if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
+ 		TX_STAT_INC(qnum, delim_underrun);
+ 
++#ifdef CONFIG_ATH9K_MAC_DEBUG
+ 	spin_lock(&sc->debug.samp_lock);
+ 	TX_SAMP_DBG(jiffies) = jiffies;
+ 	TX_SAMP_DBG(rssi_ctl0) = ts->ts_rssi_ctl0;
+@@ -844,6 +845,7 @@ void ath_debug_stat_tx(struct ath_softc 
+ 
+ 	sc->debug.tsidx = (sc->debug.tsidx + 1) % ATH_DBG_MAX_SAMPLES;
+ 	spin_unlock(&sc->debug.samp_lock);
++#endif
+ 
+ #undef TX_SAMP_DBG
+ }
+@@ -1019,6 +1021,7 @@ void ath_debug_stat_rx(struct ath_softc 
+ 
+ 	sc->debug.stats.rxstats.rs_antenna = rs->rs_antenna;
+ 
++#ifdef CONFIG_ATH9K_MAC_DEBUG
+ 	spin_lock(&sc->debug.samp_lock);
+ 	RX_SAMP_DBG(jiffies) = jiffies;
+ 	RX_SAMP_DBG(rssi_ctl0) = rs->rs_rssi_ctl0;
+@@ -1035,6 +1038,8 @@ void ath_debug_stat_rx(struct ath_softc 
+ 	sc->debug.rsidx = (sc->debug.rsidx + 1) % ATH_DBG_MAX_SAMPLES;
+ 	spin_unlock(&sc->debug.samp_lock);
+ 
++#endif
++
+ #undef RX_STAT_INC
+ #undef RX_PHY_ERR_INC
+ #undef RX_SAMP_DBG
+@@ -1278,6 +1283,8 @@ static const struct file_operations fops
+ 	.llseek = default_llseek,
+ };
+ 
++#ifdef CONFIG_ATH9K_MAC_DEBUG
++
+ void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
+ {
+ #define ATH_SAMP_DBG(c) (sc->debug.bb_mac_samp[sc->debug.sampidx].c)
+@@ -1551,6 +1558,7 @@ static const struct file_operations fops
+ 	.llseek = default_llseek,
+ };
+ 
++#endif
+ 
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+@@ -1604,8 +1612,10 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 			    &fops_base_eeprom);
+ 	debugfs_create_file("modal_eeprom", S_IRUSR, sc->debug.debugfs_phy, sc,
+ 			    &fops_modal_eeprom);
++#ifdef CONFIG_ATH9K_MAC_DEBUG
+ 	debugfs_create_file("samples", S_IRUSR, sc->debug.debugfs_phy, sc,
+ 			    &fops_samps);
++#endif
+ 
+ 	debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
+ 			   sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -235,16 +235,17 @@ struct ath9k_debug {
+ 	struct dentry *debugfs_phy;
+ 	u32 regidx;
+ 	struct ath_stats stats;
++#ifdef CONFIG_ATH9K_MAC_DEBUG
+ 	spinlock_t samp_lock;
+ 	struct ath_dbg_bb_mac_samp bb_mac_samp[ATH_DBG_MAX_SAMPLES];
+ 	u8 sampidx;
+ 	u8 tsidx;
+ 	u8 rsidx;
++#endif
+ };
+ 
+ int ath9k_init_debug(struct ath_hw *ah);
+ 
+-void ath9k_debug_samp_bb_mac(struct ath_softc *sc);
+ void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
+ void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
+ 		       struct ath_tx_status *ts, struct ath_txq *txq,
+@@ -258,10 +259,6 @@ static inline int ath9k_init_debug(struc
+ 	return 0;
+ }
+ 
+-static inline void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
+-{
+-}
+-
+ static inline void ath_debug_stat_interrupt(struct ath_softc *sc,
+ 					    enum ath9k_int status)
+ {
+@@ -282,4 +279,17 @@ static inline void ath_debug_stat_rx(str
+ 
+ #endif /* CONFIG_ATH9K_DEBUGFS */
+ 
++#ifdef CONFIG_ATH9K_MAC_DEBUG
++
++void ath9k_debug_samp_bb_mac(struct ath_softc *sc);
++
++#else
++
++static inline void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
++{
++}
++
++#endif
++
++
+ #endif /* DEBUG_H */
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -555,9 +555,11 @@ static int ath9k_init_softc(u16 devid, s
+ 	mutex_init(&sc->mutex);
+ #ifdef CONFIG_ATH9K_DEBUGFS
+ 	spin_lock_init(&sc->nodes_lock);
+-	spin_lock_init(&sc->debug.samp_lock);
+ 	INIT_LIST_HEAD(&sc->nodes);
+ #endif
++#ifdef CONFIG_ATH9K_MAC_DEBUG
++	spin_lock_init(&sc->debug.samp_lock);
++#endif
+ 	tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
+ 	tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
+ 		     (unsigned long)sc);