litmus-rt.git/arch/arm26/Kconfig, branch gpusync-rtss12

Remove the arm26 port

2007-07-31T22:39:39+00:00

The arm26 port has been in a state where it was far from even compiling
for quite some time.

Ian Molton agreed with the removal.

Signed-off-by: Adrian Bunk 
Cc: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

dma-mapping: prevent dma dependent code from linking on !HAS_DMA archs

2007-07-16T16:05:45+00:00

Continuing the work started in 411f0f3edc141a582190d3605cadd1d993abb6df ...

This enables code with a dma path, that compiles away, to build without
requiring additional code factoring.  It also prevents code that calls
dma_alloc_coherent and dma_free_coherent from linking whereas previously
the code would hit a BUG() at run time.  Finally, it allows archs that set
!HAS_DMA to delete their asm/dma-mapping.h file.

Cc: Cornelia Huck 
Cc: Martin Schwidefsky 
Cc: Heiko Carstens 
Cc: John W. Linville 
Cc: Kyle McMartin 
Cc: James Bottomley 
Cc: Tejun Heo 
Cc: Jeff Garzik 
Cc: 
Cc: 
Cc: 
Cc: 
Signed-off-by: Dan Williams 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ARM26: remove useless config option GENERIC_BUST_SPINLOCK.

2007-05-07T19:12:58+00:00

Remove the apparently useless config option GENERIC_BUST_SPINLOCK,
since nothing in the source tree refers to it.

Signed-off-by: Robert P. J. Day 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Set CONFIG_ZONE_DMA for arches with GENERIC_ISA_DMA

2007-02-11T18:51:19+00:00

As Andi pointed out: CONFIG_GENERIC_ISA_DMA only disables the ISA DMA
channel management.  Other functionality may still expect GFP_DMA to
provide memory below 16M.  So we need to make sure that CONFIG_ZONE_DMA is
set independent of CONFIG_GENERIC_ISA_DMA.  Undo the modifications to
mm/Kconfig where we made ZONE_DMA dependent on GENERIC_ISA_DMA and set
theses explicitly in each arches Kconfig.

Reviews must occur for each arch in order to determine if ZONE_DMA can be
switched off.  It can only be switched off if we know that all devices
supported by a platform are capable of performing DMA transfers to all of
memory (Some arches already support this: uml, avr32, sh sh64, parisc and
IA64/Altix).

In order to switch ZONE_DMA off conditionally, one would have to establish
a scheme by which one can assure that no drivers are enabled that are only
capable of doing I/O to a part of memory, or one needs to provide an
alternate means of performing an allocation from a specific range of memory
(like provided by alloc_pages_range()) and insure that all drivers use that
call.  In that case the arches alloc_dma_coherent() may need to be modified
to call alloc_pages_range() instead of relying on GFP_DMA.

Signed-off-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] LOG2: Implement a general integer log2 facility in the kernel

2006-12-08T16:28:51+00:00

This facility provides three entry points:

	ilog2()		Log base 2 of unsigned long
	ilog2_u32()	Log base 2 of u32
	ilog2_u64()	Log base 2 of u64

These facilities can either be used inside functions on dynamic data:

	int do_something(long q)
	{
		...;
		y = ilog2(x)
		...;
	}

Or can be used to statically initialise global variables with constant values:

	unsigned n = ilog2(27);

When performing static initialisation, the compiler will report "error:
initializer element is not constant" if asked to take a log of zero or of
something not reducible to a constant.  They treat negative numbers as
unsigned.

When not dealing with a constant, they fall back to using fls() which permits
them to use arch-specific log calculation instructions - such as BSR on
x86/x86_64 or SCAN on FRV - if available.

[akpm@osdl.org: MMC fix]
Signed-off-by: David Howells 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Herbert Xu 
Cc: David Howells 
Cc: Wojtek Kaniewski 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

arch/arm26/Kconfig typos

2006-06-30T16:57:59+00:00

Signed-off-by: Adrian Bunk

[PATCH] bitops: arm26: use generic bitops

2006-03-26T16:57:12+00:00

- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove generic_fls()
- remove generic_fls64()
- remove generic_ffs()
- remove sched_find_first_bit()
- remove generic_hweight{32,16,8}()

Signed-off-by: Akinobu Mita 
Cc: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: select BLK_DEV_FD only on A5K

2006-02-01T16:53:22+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] arm26: select system type via "choice"

2006-02-01T16:53:21+00:00

Choosing ARCH_ARC and ARCH_A5K together causes redefining and errors
here and there.

Signed-off-by: Alexey Dobriyan 
Acked-by: Ian Molton 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] tiny: Make *[ug]id16 support optional

2006-01-09T04:14:11+00:00

Configurable 16-bit UID and friends support

This allows turning off the legacy 16 bit UID interfaces on embedded platforms.

   text    data     bss     dec     hex filename
3330172  529036  190556 4049764  3dcb64 vmlinux-baseline
3328268  529040  190556 4047864  3dc3f8 vmlinux

From: Adrian Bunk 

    UID16 was accidentially disabled for !EMBEDDED.

Signed-off-by: Matt Mackall 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds