linux.git/arch/powerpc/kernel/vmlinux.lds.S, branch v2.6.23

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

2007-07-19T21:28:19+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (33 commits)
  xtensa: use DATA_DATA in xtensa
  powerpc: add missing DATA_DATA to powerpc
  cris: use DATA_DATA in cris
  kallsyms: remove usage of memmem and _GNU_SOURCE from scripts/kallsyms.c
  kbuild: use -fno-optimize-sibling-calls unconditionally
  kconfig: reset generated values only if Kconfig and .config agree.
  kbuild: fix the warning when running make tags
  kconfig: strip 'CONFIG_' automatically in kernel configuration search
  kbuild: use POSIX BRE in headers install target
  Whitelist references from __dbe_table to .init
  modpost white list pattern adjustment
  kbuild: do section mismatch check on full vmlinux
  kbuild: whitelist references from variables named _timer to .init.text
  kbuild: remove hardcoded _logo names from modpost
  kbuild: remove hardcoded apic_es7000 from modpost
  kbuild: warn about references from .init.text to .exit.text
  kbuild: consolidate section checks
  kbuild: refactor code in modpost to improve maintainability
  kbuild: ignore section mismatch warnings originating from .note section
  kbuild: .paravirtprobe section is obsolete, so modpost doesn't need to handle it
  ...

powerpc: Put allocated ELF notes in read-only data segment

2007-07-19T17:04:47+00:00

This changes the powerpc linker script to use the asm-generic NOTES macro so
that ELF note sections with SHF_ALLOC set are linked into the kernel image
along with other read-only data.  The PT_NOTE also points to their location.

This paves the way for putting useful build-time information into ELF notes
that can be found easily later in a kernel memory dump.

Signed-off-by: Roland McGrath 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

define new percpu interface for shared data

2007-07-19T17:04:44+00:00

per cpu data section contains two types of data.  One set which is
exclusively accessed by the local cpu and the other set which is per cpu,
but also shared by remote cpus.  In the current kernel, these two sets are
not clearely separated out.  This can potentially cause the same data
cacheline shared between the two sets of data, which will result in
unnecessary bouncing of the cacheline between cpus.

One way to fix the problem is to cacheline align the remotely accessed per
cpu data, both at the beginning and at the end.  Because of the padding at
both ends, this will likely cause some memory wastage and also the
interface to achieve this is not clean.

This patch:

Moves the remotely accessed per cpu data (which is currently marked
as ____cacheline_aligned_in_smp) into a different section, where all the data
elements are cacheline aligned. And as such, this differentiates the local
only data and remotely accessed data cleanly.

Signed-off-by: Fenghua Yu 
Acked-by: Suresh Siddha 
Cc: Rusty Russell 
Cc: Christoph Lameter 
Cc: 
Cc: "Luck, Tony" 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: add missing DATA_DATA to powerpc

2007-07-17T12:55:38+00:00

* Sam Ravnborg (sam@ravnborg.org) wrote:
> From your patch it looks like I originally missed out
> powerpc + xtensa when introducing DATA_DATA - would be nice if
> you could fix that.
>
> 	Sam

Add missing DATA_DATA in powerpc

Signed-off-by: Mathieu Desnoyers 
Cc: Paul Mackerras 
Signed-off-by: Sam Ravnborg 
--
 arch/powerpc/kernel/vmlinux.lds.S |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

[POWERPC] Add __read_mostly support for powerpc

2007-07-10T12:00:56+00:00

Signed-off-by: Tony Breeds 
Signed-off-by: Paul Mackerras

[POWERPC] Fix powerpc vmlinux.lds.S

2007-05-22T10:20:56+00:00

Sam's recent change in 7664709b44a13e2e0b545e2dd8e7b8797a1748dc
broke things for us because we ended up with *(.text.*) before
*(.text), whereas previously *(.text) was first.  This was
important because the start of the text section contains the
kernel entry point.

In fact, we don't need that *(.text.*) thing anymore and it
incorrectly matched .text.init.refok, thus putting it before
.text. .. ouch !

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

all-archs: consolidate .data section definition in asm-generic

2007-05-19T07:11:57+00:00

With this consolidation we can now modify the .data
section definition in one spot for all archs.

Signed-off-by: Sam Ravnborg

all-archs: consolidate .text section definition in asm-generic

2007-05-19T07:11:57+00:00

Move definition of .text section to asm-generic.

Signed-off-by: Sam Ravnborg

[PATCH] x86: Allow percpu variables to be page-aligned

2007-05-02T17:27:12+00:00

Let's allow page-alignment in general for per-cpu data (wanted by Xen, and
Ingo suggested KVM as well).

Because larger alignments can use more room, we increase the max per-cpu
memory to 64k rather than 32k: it's getting a little tight.

Signed-off-by: Rusty Russell 
Signed-off-by: Jeremy Fitzhardinge 
Signed-off-by: Andi Kleen 
Acked-by: Ingo Molnar 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton

[PATCH] disable init/initramfs.c: architectures

2007-02-11T18:51:25+00:00

Update all arch/*/kernel/vmlinux.lds.S to not include space for initramfs
when CONFIG_BLK_DEV_INITRAMFS is not selected.  This saves another 4 kbytes
on most platfoms (some reserve PAGE_SIZE for initramfs).

Signed-off-by: Jean-Paul Saman 
Cc: Al Viro 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds