litmus-rt.git/include/linux/byteorder, branch v2.6.22

Fix compilation of drivers with -O0

2007-05-08T18:15:00+00:00

It is sometimes useful to compile individual drivers with optimization
disabled for easier debugging.  Currently drivers which use htonl() and
similar functions don't compile with -O0.  This patch fixes it.  It also
removes obsolete and misleading comments.  This header is not for
userspace, so we don't have to care about strange programs these comments
mention.

(akpm: -O0 probably isn't a good idea, but this code looks pretty crufty and
unuseful)

Signed-off-by: Michal Schmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Fix constant folding and poor optimization in byte swapping code

2007-05-08T18:14:59+00:00

Constant folding does not work for the swabXX() byte swapping functions,
and the C versions optimize poorly.

Attempting to initialize a global variable to swab16(0x1234) or put
something like "case swab32(42):" in a switch statement will not compile.
It can work, swab.h just isn't doing it correctly.  This patch fixes that.

Contrary to the comment in asm-i386/byteorder.h, gcc does not recognize the
"C" version of swab16 and turn it into efficient code.  gcc can do this,
just not with the current code.  The simple function:

u16 foo(u16 x) { return swab16(x); }

Would compile to:
        movzwl  %ax, %eax
        movl    %eax, %edx
        shrl    $8, %eax
        sall    $8, %edx
        orl     %eax, %edx

With this patch, it will compile to:
        rolw    $8, %ax

I also attempted to document the maze different macros/inline functions
that are used to create the final product.

Signed-off-by: Trent Piepho 
Cc: Francois-Rene Rideau 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] cleanup linux/byteorder/swabb.h

2007-02-11T18:51:34+00:00

- no longer a userspace header
- add #include  for in-kernel compilation

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

[PATCH] remove include/linux/byteorder/pdp_endian.h

2007-02-11T18:51:24+00:00

include/linux/byteorder/pdp_endian.h is completely unused, and the comment in
the file itself states that it's both untested and only a proof-of-concept.

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

[HEADERS] One line per header in Kbuild files to reduce conflicts

2006-09-19T11:43:58+00:00

Signed-off-by: David Woodhouse

Add generic Kbuild files for 'make headers_install'

2006-06-18T11:14:01+00:00

This adds the Kbuild files listing the files which are to be installed by
the 'headers_install' make target, in generic directories.

Signed-off-by: David Woodhouse

[PATCH] remove gcc-2 checks

2006-01-09T04:14:02+00:00

Remove various things which were checking for gcc-1.x and gcc-2.x compilers.

From: Adrian Bunk 

    Some documentation updates and removes some code paths for gcc < 3.2.

Acked-by: Russell King 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[BYTEORDER]: Document alignment and byteorder macros

2005-09-20T02:57:36+00:00

This patch comments the fact that although passing le64_to_cpup et
al. is within the intended use of the byteorder macros, using
get_unaligned is the recommended way to go.

Signed-off-by: Ed L. Cashin 
Signed-off-by: David S. Miller

[PATCH] swabb.h warning fixes

2005-06-29T04:20:31+00:00

In file included from drivers/media/dvb/ttpci/av7110_hw.c:38:
include/linux/byteorder/swabb.h:96: warning: type qualifiers ignored on function return type
include/linux/byteorder/swabb.h:110: warning: type qualifiers ignored on function return type
In file included from drivers/media/dvb/ttpci/av7110_v4l.c:36:
include/linux/byteorder/swabb.h:96: warning: type qualifiers ignored on function return type
include/linux/byteorder/swabb.h:110: warning: type qualifiers ignored on function return type
In file included from drivers/media/dvb/ttpci/av7110_av.c:37:
include/linux/byteorder/swabb.h:96: warning: type qualifiers ignored on function return type
include/linux/byteorder/swabb.h:110: warning: type qualifiers ignored on function return type
drivers/isdn/icn/icn.c:719:4: warning: #warning TODO test headroom or use skb->nb to flag ACK
In file included from drivers/media/dvb/ttpci/av7110_ca.c:39:
include/linux/byteorder/swabb.h:96: warning: type qualifiers ignored on function return type
include/linux/byteorder/swabb.h:110: warning: type qualifiers ignored on function return type
In file included from drivers/media/dvb/ttpci/av7110.c:41:
include/linux/byteorder/swabb.h:96: warning: type qualifiers ignored on function return type
include/linux/byteorder/swabb.h:110: warning: type qualifiers ignored on function return type

Does declaring a function to return a const value actually mean something to
gcc?

Dunno.  Kill it and replace sone `__inline__'s with `inline' too.

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

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!