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e9fa0b9f3a
Backport patches that separate spectral scan support from general debugfs support of ath9k/ath10k; this allows to remove the dependency on KERNEL_RELAY from these driver packages even with debugfs enabled and avoids the memory footprint of the relay buffers allocated by ath9k/ath10k even when they aren't used at all. The KERNEL_RELAY dependency is moved to a new config symbol that enables spectral scan support in these drivers. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
104 lines
3.6 KiB
Diff
104 lines
3.6 KiB
Diff
From 9df7ddc3ed25b7d3473f117a0680b9418adb5753 Mon Sep 17 00:00:00 2001
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Message-Id: <9df7ddc3ed25b7d3473f117a0680b9418adb5753.1515610034.git.mschiffer@universe-factory.net>
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From: Matthias Schiffer <mschiffer@universe-factory.net>
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Date: Mon, 27 Nov 2017 18:56:22 +0100
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Subject: [PATCH 1/2] ath9k: move spectral scan support under a separate config
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symbol
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At the moment, spectral scan support, and with it RELAY, is always enabled
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with ATH9K[_HTC]_DEBUGFS. Spectral scan support is currently the only user
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of RELAY in ath9k, and it unconditionally reserves a relay channel.
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Having debugfs support in ath9k is often useful even on very small embedded
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routers, where we'd rather like to avoid the code size and RAM usage of the
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relay support.
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Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
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Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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---
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drivers/net/wireless/ath/ath9k/Kconfig | 14 ++++++++++----
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drivers/net/wireless/ath/ath9k/Makefile | 4 ++--
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drivers/net/wireless/ath/ath9k/common-spectral.h | 4 ++--
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3 files changed, 14 insertions(+), 8 deletions(-)
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--- a/drivers/net/wireless/ath/ath9k/Kconfig
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+++ b/drivers/net/wireless/ath/ath9k/Kconfig
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@@ -64,13 +64,12 @@ config ATH9K_DEBUGFS
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depends on ATH9K && DEBUG_FS
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select MAC80211_DEBUGFS
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select ATH9K_COMMON_DEBUG
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- depends on RELAY
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---help---
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Say Y, if you need access to ath9k's statistics for
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interrupts, rate control, etc.
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- Also required for changing debug message flags at run time.
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- As well as access to the FFT/spectral data and TX99.
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+ Also required for changing debug message flags at run time and for
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+ TX99.
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config ATH9K_STATION_STATISTICS
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bool "Detailed station statistics"
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@@ -181,7 +180,6 @@ config ATH9K_HTC_DEBUGFS
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bool "Atheros ath9k_htc debugging"
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depends on ATH9K_HTC && DEBUG_FS
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select ATH9K_COMMON_DEBUG
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- depends on RELAY
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---help---
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Say Y, if you need access to ath9k_htc's statistics.
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As well as access to the FFT/spectral data.
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@@ -197,3 +195,11 @@ config ATH9K_HWRNG
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Say Y, feeds the entropy directly from the WiFi driver to the input
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pool.
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+
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+config ATH9K_COMMON_SPECTRAL
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+ bool "Atheros ath9k/ath9k_htc spectral scan support"
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+ depends on ATH9K_DEBUGFS || ATH9K_HTC_DEBUGFS
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+ depends on RELAY
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+ default n
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+ ---help---
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+ Say Y to enable access to the FFT/spectral data via debugfs.
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--- a/drivers/net/wireless/ath/ath9k/Makefile
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+++ b/drivers/net/wireless/ath/ath9k/Makefile
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@@ -61,8 +61,8 @@ ath9k_common-y:= common.o \
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common-init.o \
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common-beacon.o \
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-ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o \
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- common-spectral.o
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+ath9k_common-$(CPTCFG_ATH9K_COMMON_DEBUG) += common-debug.o
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+ath9k_common-$(CPTCFG_ATH9K_COMMON_SPECTRAL) += common-spectral.o
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ath9k_htc-y += htc_hst.o \
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hif_usb.o \
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--- a/drivers/net/wireless/ath/ath9k/common-spectral.h
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+++ b/drivers/net/wireless/ath/ath9k/common-spectral.h
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@@ -151,7 +151,7 @@ static inline u8 spectral_bitmap_weight(
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return bins[0] & 0x3f;
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}
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-#ifdef CPTCFG_ATH9K_COMMON_DEBUG
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+#ifdef CPTCFG_ATH9K_COMMON_SPECTRAL
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void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv, struct dentry *debugfs_phy);
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void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv);
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@@ -183,6 +183,6 @@ static inline int ath_cmn_process_fft(st
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{
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return 0;
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}
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-#endif /* CPTCFG_ATH9K_COMMON_DEBUG */
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+#endif /* CPTCFG_ATH9K_COMMON_SPECTRAL */
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#endif /* SPECTRAL_H */
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--- a/local-symbols
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+++ b/local-symbols
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@@ -116,6 +116,7 @@ ATH9K_PCOEM=
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ATH9K_HTC=
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ATH9K_HTC_DEBUGFS=
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ATH9K_HWRNG=
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+ATH9K_COMMON_SPECTRAL=
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CARL9170=
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CARL9170_LEDS=
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CARL9170_DEBUGFS=
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