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Jonathan Corbet 0b28067688 Add cycle_kernel_lock() 
A number of driver functions are so obviously trivial that they do not need
the big kernel lock - at least not overtly.  It turns out that the
acquisition of the BKL in driver open() functions can perform a sort of
poor-hacker's serialization function, delaying the open operation until the
driver is certain to have completed its initialization.  Add a simple
cycle_kernel_lock() function for these cases to make it clear that there is
no need to *hold* the BKL, just to be sure that we can acquire it.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:53 -06:00
..
acpi
asm-alpha asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
asm-arm Merge branch 'omap-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2008-05-17 22:56:29 +01:00
asm-avr32 avr32: types: use <asm-generic/int-*.h> for the avr32 architecture 2008-05-02 16:18:20 -07:00
asm-blackfin Blackfin Serial Driver: abstract away DLAB differences into header 2008-05-07 11:41:26 +08:00
asm-cris cris: types: use <asm-generic/int-*.h> for the cris architecture 2008-05-02 16:18:20 -07:00
asm-frv read_barrier_depends arch fixlets 2008-05-14 10:05:18 -07:00
asm-generic types: add C99-style constructors to <asm-generic/int-*.h> 2008-05-02 16:18:42 -07:00
asm-h8300 asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
asm-ia64 [IA64] machvec support for SGI UV platform 2008-05-14 14:22:04 -07:00
asm-m32r m32r: types: use <asm-generic/int-*.h> for the m32r architecture 2008-05-02 16:18:21 -07:00
asm-m68k m68k: Prefix ISA type with ISA_TYPE_ 2008-05-18 13:28:50 -07:00
asm-m68knommu m68knommu: rework definition of HZ 2008-05-01 08:08:36 -07:00
asm-mips [MIPS] Get rid of __ilog2 2008-05-12 16:46:55 +01:00
asm-mn10300 MN10300: Make cpu_relax() invoke barrier() 2008-05-08 10:49:39 -07:00
asm-parisc parisc: use conditional macro for 64-bit wide ops 2008-05-15 11:03:43 -04:00
asm-powerpc [POWERPC] Fix uninitialized variable bug in copy_{to|from}_user 2008-05-15 20:49:52 +10:00
asm-ppc [POWERPC] ppc: More compile fixes 2008-05-12 22:57:51 +10:00
asm-s390 [S390] s390dbf: Use const char * for dbf name. 2008-05-15 16:52:39 +02:00
asm-sh sh: Fix DMAC base address for SH7709S 2008-05-09 19:04:12 +09:00
asm-sparc sparc: Fix mremap address range validation. 2008-05-12 16:33:33 -07:00
asm-sparc64 sparc64: Use a TS_RESTORE_SIGMASK 2008-05-12 22:45:15 -07:00
asm-um asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
asm-v850 asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
asm-x86 mprotect: prevent alteration of the PAT bits 2008-05-14 19:11:15 -07:00
asm-xtensa asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
crypto [CRYPTO] api: Fix scatterwalk_sg_chain 2008-05-01 18:22:28 +08:00
keys
linux Add cycle_kernel_lock() 2008-06-20 14:05:53 -06:00
math-emu
media i2c: Convert some more new-style drivers to use module aliasing 2008-05-11 20:37:06 +02:00
mtd
net 9p: fix error path during early mount 2008-05-14 19:23:27 -05:00
pcmcia
rdma IB: expand ib_umem_get() prototype 2008-04-29 08:06:12 -07:00
rxrpc
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-05-02 13:52:35 -07:00
sound [ALSA] ASoC: build fix for snd_soc_info_bool_ext 2008-05-13 14:47:44 +02:00
video fbdev: platforming hecubafb and n411 2008-04-28 08:58:41 -07:00
xen
Kbuild