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Commit 6de5bd12 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

BKL: introduce CONFIG_BKL. 



With all the patches we have queued in the BKL removal tree, only a
few dozen modules are left that actually rely on the BKL, and even
there are lots of low-hanging fruit. We need to decide what to do
about them, this patch illustrates one of the options:

Every user of the BKL is marked as 'depends on BKL' in Kconfig,
and the CONFIG_BKL becomes a user-visible option. If it gets
disabled, no BKL using module can be built any more and the BKL
code itself is compiled out.

The one exception is file locking, which is practically always
enabled and does a 'select BKL' instead. This effectively forces
CONFIG_BKL to be enabled until we have solved the fs/lockd
mess and can apply the patch that removes the BKL from fs/locks.c.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 7ff52efd

drivers/gpu/drm/Kconfig

+4 −1
Original line number Diff line number Diff line
@@ -73,7 +73,8 @@ source "drivers/gpu/drm/radeon/Kconfig" 


config DRM_I810

	tristate "Intel I810"

	depends on DRM && AGP && AGP_INTEL

	# BKL usage in order to avoid AB-BA deadlocks, may become BROKEN_ON_SMP

	depends on DRM && AGP && AGP_INTEL && BKL

	help

	  Choose this option if you have an Intel I810 graphics card.  If M is

	  selected, the module will be called i810.  AGP support is required
@@ -86,6 +87,8 @@ choice 


config DRM_I830

	tristate "i830 driver"

	# BKL usage in order to avoid AB-BA deadlocks, i830 may get removed

	depends on BKL

	help

	  Choose this option if you have a system that has Intel 830M, 845G,

	  852GM, 855GM or 865G integrated graphics.  If M is selected, the

drivers/media/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ comment "Multimedia core support" 


config VIDEO_DEV

	tristate "Video For Linux"

	depends on BKL # used in many drivers for ioctl handling, need to kill

	---help---

	  V4L core support for video capture and overlay devices, webcams and

	  AM/FM radio cards.

drivers/net/appletalk/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
#

config ATALK

	tristate "Appletalk protocol support"

	depends on BKL # waiting to be removed from net/appletalk/ddp.c

	select LLC

	---help---

	  AppleTalk is the protocol that Apple computers can use to communicate

drivers/staging/cx25821/Kconfig

+1 −0
Original line number Diff line number Diff line 
config VIDEO_CX25821

	tristate "Conexant cx25821 support"

	depends on DVB_CORE && VIDEO_DEV && PCI && I2C && INPUT

	depends on BKL # please fix

	select I2C_ALGOBIT

	select VIDEO_BTCX

	select VIDEO_TVEEPROM

drivers/staging/easycap/Kconfig

+1 −0
Original line number Diff line number Diff line 
config EASYCAP

	tristate "EasyCAP USB ID 05e1:0408 support"

	depends on USB && VIDEO_DEV

	depends on BKL # please fix



	---help---

	  This is an integrated audio/video driver for EasyCAP cards with