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Message-Id: <1275523999-27462-6-git-send-email-arnd@arndb.de> Date: Thu, 3 Jun 2010 02:13:19 +0200 From: Arnd Bergmann <arnd@...db.de> To: linux-kernel@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, linux-usb@...r.kernel.org, Frederic Weisbecker <fweisbec@...il.com>, John Kacur <jkacur@...hat.com>, Ingo Molnar <mingo@...e.hu>, Jan Blunck <jblunck@...e.de>, Arnd Bergmann <arnd@...ay.de.ibm.com> Subject: [RFC 5/5] BKL: introduce CONFIG_BKL. From: Arnd Bergmann <arnd@...ay.de.ibm.com> To make it possible to build a kernel without the big kernel lock, we need to make sure we don't build any code that still uses it, so disable the options in Kconfig. Most of the v4l, drm and oss drivers still need it too, but their respective top-level interfaces get disabled here, so we don't need to list them separately. Signed-off-by: Arnd Bergmann <arnd@...db.de> --- drivers/char/Kconfig | 2 +- drivers/gpu/drm/Kconfig | 5 +++-- drivers/hid/usbhid/Kconfig | 2 +- drivers/isdn/Kconfig | 1 + drivers/isdn/capi/Kconfig | 2 +- drivers/isdn/mISDN/Kconfig | 1 + drivers/media/Kconfig | 3 ++- drivers/misc/Kconfig | 2 +- drivers/net/appletalk/Kconfig | 1 + drivers/sbus/char/Kconfig | 2 +- drivers/staging/sep/Kconfig | 2 +- drivers/staging/usbip/Kconfig | 2 +- drivers/usb/gadget/Kconfig | 2 +- fs/adfs/Kconfig | 1 + fs/afs/Kconfig | 1 + fs/autofs/Kconfig | 1 + fs/autofs4/Kconfig | 1 + fs/coda/Kconfig | 1 + fs/ecryptfs/Kconfig | 1 + fs/fat/Kconfig | 2 ++ fs/freevxfs/Kconfig | 1 + fs/hpfs/Kconfig | 1 + fs/isofs/Kconfig | 1 + fs/jffs2/Kconfig | 1 + fs/ncpfs/Kconfig | 1 + fs/nfs/Kconfig | 2 +- fs/nfsd/Kconfig | 1 + fs/ocfs2/Kconfig | 1 + fs/qnx4/Kconfig | 1 + fs/reiserfs/Kconfig | 1 + fs/smbfs/Kconfig | 1 + fs/squashfs/Kconfig | 2 +- fs/udf/Kconfig | 1 + fs/ufs/Kconfig | 2 +- init/Kconfig | 2 +- lib/Kconfig.debug | 11 ++++++++++- net/ipx/Kconfig | 1 + net/irda/Kconfig | 2 +- net/irda/irnet/Kconfig | 2 +- net/x25/Kconfig | 2 +- sound/oss/Kconfig | 2 +- 41 files changed, 54 insertions(+), 20 deletions(-) diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index f09fc0e..b1d4c57 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -129,7 +129,7 @@ config SERIAL_NONSTANDARD config COMPUTONE tristate "Computone IntelliPort Plus serial support" - depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) + depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) && BKL ---help--- This driver supports the entire family of Intelliport II/Plus controllers with the exception of the MicroChannel controllers and diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 88910e5..f59e263 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -6,7 +6,7 @@ # menuconfig DRM tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)" - depends on (AGP || AGP=n) && PCI && !EMULATED_CMPXCHG && MMU + depends on (AGP || AGP=n) && PCI && !EMULATED_CMPXCHG && MMU && BKL select I2C select I2C_ALGOBIT select SLOW_WORK @@ -72,7 +72,7 @@ source "drivers/gpu/drm/radeon/Kconfig" config DRM_I810 tristate "Intel I810" - depends on DRM && AGP && AGP_INTEL + 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 @@ -85,6 +85,7 @@ choice config DRM_I830 tristate "i830 driver" + 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 diff --git a/drivers/hid/usbhid/Kconfig b/drivers/hid/usbhid/Kconfig index 4edb3be..deee423 100644 --- a/drivers/hid/usbhid/Kconfig +++ b/drivers/hid/usbhid/Kconfig @@ -4,7 +4,7 @@ comment "USB Input Devices" config USB_HID tristate "USB Human Interface Device (full HID) support" default y - depends on USB && INPUT + depends on USB && INPUT && BKL select HID ---help--- Say Y here if you want full HID support to connect USB keyboards, diff --git a/drivers/isdn/Kconfig b/drivers/isdn/Kconfig index 4fb6016..ecf58c5 100644 --- a/drivers/isdn/Kconfig +++ b/drivers/isdn/Kconfig @@ -22,6 +22,7 @@ if ISDN menuconfig ISDN_I4L tristate "Old ISDN4Linux (deprecated)" + depends on BKL ---help--- This driver allows you to use an ISDN adapter for networking connections and as dialin/out device. The isdn-tty's have a built diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig index a168e8a..bb40d8d 100644 --- a/drivers/isdn/capi/Kconfig +++ b/drivers/isdn/capi/Kconfig @@ -35,7 +35,7 @@ config ISDN_CAPI_CAPI20 config ISDN_CAPI_CAPIFS_BOOL bool "CAPI2.0 filesystem support (DEPRECATED)" - depends on ISDN_CAPI_MIDDLEWARE && ISDN_CAPI_CAPI20 + depends on ISDN_CAPI_MIDDLEWARE && ISDN_CAPI_CAPI20 && BKL help This option provides a special file system, similar to /dev/pts with device nodes for the special ttys established by using the diff --git a/drivers/isdn/mISDN/Kconfig b/drivers/isdn/mISDN/Kconfig index 1747a02..ba4fbd9 100644 --- a/drivers/isdn/mISDN/Kconfig +++ b/drivers/isdn/mISDN/Kconfig @@ -4,6 +4,7 @@ menuconfig MISDN tristate "Modular ISDN driver" + depends on BKL help Enable support for the modular ISDN driver. diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig index a28541b..95d2a8b 100644 --- a/drivers/media/Kconfig +++ b/drivers/media/Kconfig @@ -19,6 +19,7 @@ comment "Multimedia core support" config VIDEO_DEV tristate "Video For Linux" + depends on BKL ---help--- V4L core support for video capture and overlay devices, webcams and AM/FM radio cards. @@ -75,7 +76,7 @@ config VIDEO_V4L1_COMPAT config DVB_CORE tristate "DVB for Linux" - depends on NET && INET + depends on NET && INET && BKL select CRC32 help DVB core utility functions for device handling, software fallbacks etc. diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 26386a9..a79d8d2 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -263,7 +263,7 @@ config HP_ILO config SGI_GRU tristate "SGI GRU driver" - depends on X86_UV && SMP + depends on X86_UV && SMP && BKL default n select MMU_NOTIFIER ---help--- diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig index 0a0e0cd..04fa1e7 100644 --- a/drivers/net/appletalk/Kconfig +++ b/drivers/net/appletalk/Kconfig @@ -3,6 +3,7 @@ # config ATALK tristate "Appletalk protocol support" + depends on BKL select LLC ---help--- AppleTalk is the protocol that Apple computers can use to communicate diff --git a/drivers/sbus/char/Kconfig b/drivers/sbus/char/Kconfig index 73cde85..b0272e2 100644 --- a/drivers/sbus/char/Kconfig +++ b/drivers/sbus/char/Kconfig @@ -31,7 +31,7 @@ config TADPOLE_TS102_UCTRL config SUN_JSFLASH tristate "JavaStation OS Flash SIMM (EXPERIMENTAL)" - depends on EXPERIMENTAL && SPARC32 + depends on EXPERIMENTAL && SPARC32 && BKL help If you say Y here, you will be able to boot from your JavaStation's Flash memory. diff --git a/drivers/staging/sep/Kconfig b/drivers/staging/sep/Kconfig index 0a9c39c..ae1e181 100644 --- a/drivers/staging/sep/Kconfig +++ b/drivers/staging/sep/Kconfig @@ -1,7 +1,7 @@ config DX_SEP tristate "Discretix SEP driver" # depends on MRST - depends on RAR_REGISTER && PCI + depends on RAR_REGISTER && PCI && BKL default y help Discretix SEP driver diff --git a/drivers/staging/usbip/Kconfig b/drivers/staging/usbip/Kconfig index 2c1d10a..b11ec37 100644 --- a/drivers/staging/usbip/Kconfig +++ b/drivers/staging/usbip/Kconfig @@ -1,6 +1,6 @@ config USB_IP_COMMON tristate "USB IP support (EXPERIMENTAL)" - depends on USB && NET && EXPERIMENTAL + depends on USB && NET && EXPERIMENTAL && BKL default N ---help--- This enables pushing USB packets over IP to allow remote diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 649c0c5..94500dc 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -696,7 +696,7 @@ config USB_ETH_EEM config USB_GADGETFS tristate "Gadget Filesystem (EXPERIMENTAL)" - depends on EXPERIMENTAL + depends on EXPERIMENTAL && BKL help This driver provides a filesystem based API that lets user mode programs implement a single-configuration USB device, including diff --git a/fs/adfs/Kconfig b/fs/adfs/Kconfig index e55182a..d72c786 100644 --- a/fs/adfs/Kconfig +++ b/fs/adfs/Kconfig @@ -1,6 +1,7 @@ config ADFS_FS tristate "ADFS file system support (EXPERIMENTAL)" depends on BLOCK && EXPERIMENTAL + depends on BKL help The Acorn Disc Filing System is the standard file system of the RiscOS operating system which runs on Acorn's ARM-based Risc PC diff --git a/fs/afs/Kconfig b/fs/afs/Kconfig index 5c4e61d..0874017 100644 --- a/fs/afs/Kconfig +++ b/fs/afs/Kconfig @@ -1,6 +1,7 @@ config AFS_FS tristate "Andrew File System support (AFS) (EXPERIMENTAL)" depends on INET && EXPERIMENTAL + depends on BKL select AF_RXRPC help If you say Y here, you will get an experimental Andrew File System diff --git a/fs/autofs/Kconfig b/fs/autofs/Kconfig index 5f3bea9..9126a42 100644 --- a/fs/autofs/Kconfig +++ b/fs/autofs/Kconfig @@ -1,5 +1,6 @@ config AUTOFS_FS tristate "Kernel automounter support" + depends on BKL help The automounter is a tool to automatically mount remote file systems on demand. This implementation is partially kernel-based to reduce diff --git a/fs/autofs4/Kconfig b/fs/autofs4/Kconfig index 1204d63..06831b5 100644 --- a/fs/autofs4/Kconfig +++ b/fs/autofs4/Kconfig @@ -1,5 +1,6 @@ config AUTOFS4_FS tristate "Kernel automounter version 4 support (also supports v3)" + depends on BKL help The automounter is a tool to automatically mount remote file systems on demand. This implementation is partially kernel-based to reduce diff --git a/fs/coda/Kconfig b/fs/coda/Kconfig index c0e5a7f..8689de8 100644 --- a/fs/coda/Kconfig +++ b/fs/coda/Kconfig @@ -1,6 +1,7 @@ config CODA_FS tristate "Coda file system support (advanced network fs)" depends on INET + depends on BKL help Coda is an advanced network file system, similar to NFS in that it enables you to mount file systems of a remote server and access them diff --git a/fs/ecryptfs/Kconfig b/fs/ecryptfs/Kconfig index 1cd6d9d..2e8660f 100644 --- a/fs/ecryptfs/Kconfig +++ b/fs/ecryptfs/Kconfig @@ -1,6 +1,7 @@ config ECRYPT_FS tristate "eCrypt filesystem layer support (EXPERIMENTAL)" depends on EXPERIMENTAL && KEYS && CRYPTO + depends on BKL select CRYPTO_ECB select CRYPTO_CBC select CRYPTO_MD5 diff --git a/fs/fat/Kconfig b/fs/fat/Kconfig index 182f9ff..c4777ea 100644 --- a/fs/fat/Kconfig +++ b/fs/fat/Kconfig @@ -34,6 +34,7 @@ config FAT_FS config MSDOS_FS tristate "MSDOS fs support" + depends on BKL select FAT_FS help This allows you to mount MSDOS partitions of your hard drive (unless @@ -59,6 +60,7 @@ config MSDOS_FS config VFAT_FS tristate "VFAT (Windows-95) fs support" + depends on BKL select FAT_FS help This option provides support for normal Windows file systems with diff --git a/fs/freevxfs/Kconfig b/fs/freevxfs/Kconfig index 8dc1cd5..aba5cb5 100644 --- a/fs/freevxfs/Kconfig +++ b/fs/freevxfs/Kconfig @@ -1,6 +1,7 @@ config VXFS_FS tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" depends on BLOCK + depends on BKL help FreeVxFS is a file system driver that support the VERITAS VxFS(TM) file system format. VERITAS VxFS(TM) is the standard file system diff --git a/fs/hpfs/Kconfig b/fs/hpfs/Kconfig index 56bd15c..1012579 100644 --- a/fs/hpfs/Kconfig +++ b/fs/hpfs/Kconfig @@ -1,6 +1,7 @@ config HPFS_FS tristate "OS/2 HPFS file system support" depends on BLOCK + depends on BKL help OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS is the file system used for organizing files on OS/2 hard disk diff --git a/fs/isofs/Kconfig b/fs/isofs/Kconfig index 8ab9878..2c45a34 100644 --- a/fs/isofs/Kconfig +++ b/fs/isofs/Kconfig @@ -1,5 +1,6 @@ config ISO9660_FS tristate "ISO 9660 CDROM file system support" + depends on BKL help This is the standard file system used on CD-ROMs. It was previously known as "High Sierra File System" and is called "hsfs" on other diff --git a/fs/jffs2/Kconfig b/fs/jffs2/Kconfig index 6ae169c..d13b148 100644 --- a/fs/jffs2/Kconfig +++ b/fs/jffs2/Kconfig @@ -1,6 +1,7 @@ config JFFS2_FS tristate "Journalling Flash File System v2 (JFFS2) support" select CRC32 + depends on BKL depends on MTD help JFFS2 is the second generation of the Journalling Flash File System diff --git a/fs/ncpfs/Kconfig b/fs/ncpfs/Kconfig index c931cf2..d0ed28d 100644 --- a/fs/ncpfs/Kconfig +++ b/fs/ncpfs/Kconfig @@ -3,6 +3,7 @@ # config NCP_FS tristate "NCP file system support (to mount NetWare volumes)" + depends on BKL depends on IPX!=n || INET help NCP (NetWare Core Protocol) is a protocol that runs over IPX and is diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index a43d07e..16ab92c 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -1,6 +1,6 @@ config NFS_FS tristate "NFS client support" - depends on INET && FILE_LOCKING + depends on INET && FILE_LOCKING && BKL select LOCKD select SUNRPC select NFS_ACL_SUPPORT if NFS_V3_ACL diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index 503b9da..afdf7ce 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -2,6 +2,7 @@ config NFSD tristate "NFS server support" depends on INET depends on FILE_LOCKING + depends on BKL select LOCKD select SUNRPC select EXPORTFS diff --git a/fs/ocfs2/Kconfig b/fs/ocfs2/Kconfig index 0d84066..11b66d0 100644 --- a/fs/ocfs2/Kconfig +++ b/fs/ocfs2/Kconfig @@ -1,5 +1,6 @@ config OCFS2_FS tristate "OCFS2 file system support" + depends on BKL depends on NET && SYSFS select CONFIGFS_FS select JBD2 diff --git a/fs/qnx4/Kconfig b/fs/qnx4/Kconfig index 5f60899..4fae4a9 100644 --- a/fs/qnx4/Kconfig +++ b/fs/qnx4/Kconfig @@ -1,5 +1,6 @@ config QNX4FS_FS tristate "QNX4 file system support (read only)" + depends on BKL depends on BLOCK help This is the file system used by the real-time operating systems diff --git a/fs/reiserfs/Kconfig b/fs/reiserfs/Kconfig index 513f431..d9ac7c5 100644 --- a/fs/reiserfs/Kconfig +++ b/fs/reiserfs/Kconfig @@ -1,5 +1,6 @@ config REISERFS_FS tristate "Reiserfs support" + depends on BKL select CRC32 help Stores not just filenames but the files themselves in a balanced diff --git a/fs/smbfs/Kconfig b/fs/smbfs/Kconfig index e668127..5361221 100644 --- a/fs/smbfs/Kconfig +++ b/fs/smbfs/Kconfig @@ -1,5 +1,6 @@ config SMB_FS tristate "SMB file system support (OBSOLETE, please use CIFS)" + depends on BKL depends on INET select NLS help diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig index cc6ce8a..26fcaf3 100644 --- a/fs/squashfs/Kconfig +++ b/fs/squashfs/Kconfig @@ -1,6 +1,6 @@ config SQUASHFS tristate "SquashFS 4.0 - Squashed file system support" - depends on BLOCK + depends on BLOCK && BKL select ZLIB_INFLATE help Saying Y here includes support for SquashFS 4.0 (a Compressed diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig index 0e0e99b..b344257 100644 --- a/fs/udf/Kconfig +++ b/fs/udf/Kconfig @@ -1,5 +1,6 @@ config UDF_FS tristate "UDF file system support" + depends on BKL select CRC_ITU_T help This is the new file system used on some CD-ROMs and DVDs. Say Y if diff --git a/fs/ufs/Kconfig b/fs/ufs/Kconfig index e4f10a4..7f1410f 100644 --- a/fs/ufs/Kconfig +++ b/fs/ufs/Kconfig @@ -1,6 +1,6 @@ config UFS_FS tristate "UFS file system support (read only)" - depends on BLOCK + depends on BLOCK && BKL help BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, OpenBSD and NeXTstep) use a file system called UFS. Some System V diff --git a/init/Kconfig b/init/Kconfig index 2cce9f3..e44b0c9 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -64,7 +64,7 @@ config BROKEN_ON_SMP config LOCK_KERNEL bool - depends on SMP || PREEMPT + depends on (SMP || PREEMPT) && BKL default y config INIT_ENV_ARG_LIMIT diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index e722e9d..8240de9 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -424,7 +424,7 @@ config DEBUG_PI_LIST config RT_MUTEX_TESTER bool "Built-in scriptable tester for rt-mutexes" - depends on DEBUG_KERNEL && RT_MUTEXES + depends on DEBUG_KERNEL && RT_MUTEXES && BKL = y help This option enables a rt-mutex tester. @@ -444,6 +444,15 @@ config DEBUG_MUTEXES This feature allows mutex semantics violations to be detected and reported. +config BKL + tristate "Big Kernel Lock" if SMP || PREEMPT + default y + help + This is the traditional lock that is used in old code instead + of proper locking. All drivers that use the BKL should depend + on this symbol. + Say Y here unless you are working on removing the BKL. + config DEBUG_LOCK_ALLOC bool "Lock debugging: detect incorrect freeing of live locks" depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT diff --git a/net/ipx/Kconfig b/net/ipx/Kconfig index e9ad006..45b232e 100644 --- a/net/ipx/Kconfig +++ b/net/ipx/Kconfig @@ -3,6 +3,7 @@ # config IPX tristate "The IPX protocol" + depends on BKL select LLC ---help--- This is support for the Novell networking protocol, IPX, commonly diff --git a/net/irda/Kconfig b/net/irda/Kconfig index c8671a7..b92874b 100644 --- a/net/irda/Kconfig +++ b/net/irda/Kconfig @@ -3,7 +3,7 @@ # menuconfig IRDA - depends on NET && !S390 + depends on NET && !S390 && BKL tristate "IrDA (infrared) subsystem support" select CRC_CCITT ---help--- diff --git a/net/irda/irnet/Kconfig b/net/irda/irnet/Kconfig index 28c557f..4646380 100644 --- a/net/irda/irnet/Kconfig +++ b/net/irda/irnet/Kconfig @@ -1,6 +1,6 @@ config IRNET tristate "IrNET protocol" - depends on IRDA && PPP + depends on IRDA && PPP && BKL help Say Y here if you want to build support for the IrNET protocol. To compile it as a module, choose M here: the module will be diff --git a/net/x25/Kconfig b/net/x25/Kconfig index e6759c9..71f3164 100644 --- a/net/x25/Kconfig +++ b/net/x25/Kconfig @@ -4,7 +4,7 @@ config X25 tristate "CCITT X.25 Packet Layer (EXPERIMENTAL)" - depends on EXPERIMENTAL + depends on EXPERIMENTAL && BKL ---help--- X.25 is a set of standardized network protocols, similar in scope to frame relay; the one physical line from your box to the X.25 network diff --git a/sound/oss/Kconfig b/sound/oss/Kconfig index a513651..9552197 100644 --- a/sound/oss/Kconfig +++ b/sound/oss/Kconfig @@ -253,7 +253,7 @@ config MSND_FIFOSIZE menuconfig SOUND_OSS tristate "OSS sound modules" - depends on ISA_DMA_API && VIRT_TO_BUS + depends on ISA_DMA_API && VIRT_TO_BUS && BKL help OSS is the Open Sound System suite of sound card drivers. They make sound programming easier since they provide a common API. Say Y or -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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