linux.git/arch/arm/kernel/vmlinux.lds.S, branch v3.1-rc2

ARM: vmlinux.lds: use _text and _stext the same way as x86

2011-07-07T22:36:34+00:00

x86 uses _text to mark the start of the kernel image including the
head text, and _stext to mark the start of the .text section.  Change
our vmlinux.lds to conform.  An audit of the places which use _stext
and _text in arch/arm indicates no users of either symbol are impacted
by this change.  It does mean a slight change to /proc/iomem output.

Acked-by: Nicolas Pitre 
Tested-by: Stephen Boyd 
Signed-off-by: Russell King

ARM: vmlinux.lds: move init sections between text and data sections

2011-07-07T22:36:31+00:00

Place the init sections between the text and data sections.  This
means all code is grouped together at the beginning of the kernel
image, and all data is at the end of the image.  This avoids problems
with the 24-bit branch instruction relocations becoming invalid with
large initramfs images.

Acked-by: Nicolas Pitre 
Tested-by: Stephen Boyd 
Signed-off-by: Russell King

ARM: vmlinux.lds: remove .rodata/.rodata1 from main .text segment

2011-07-07T22:36:28+00:00

RODATA() already handles these sections, so allow it to take care
of them for us.

Acked-by: Nicolas Pitre 
Tested-by: Stephen Boyd 
Signed-off-by: Russell King

ARM: vmlinux.lds: rearrange .init output section

2011-07-07T22:35:41+00:00

Keep the various linker tables as separate output sections rather
than combining them together into one big .init section.  This
makes the 'vmlinux' easier to see what is placed where.

Acked-by: Nicolas Pitre 
Tested-by: Stephen Boyd 
Signed-off-by: Russell King

ARM: vmlinux.lds: move discarded sections to beginning

2011-07-07T22:35:38+00:00

Rather than scattering the discarded sections throughout the linker
file, move them to the start.

Acked-by: Nicolas Pitre 
Tested-by: Stephen Boyd 
Signed-off-by: Russell King

percpu: Always align percpu output section to PAGE_SIZE

2011-03-24T17:50:09+00:00

Percpu allocator honors alignment request upto PAGE_SIZE and both the
percpu addresses in the percpu address space and the translated kernel
addresses should be aligned accordingly.  The calculation of the
former depends on the alignment of percpu output section in the kernel
image.

The linker script macros PERCPU_VADDR() and PERCPU() are used to
define this output section and the latter takes @align parameter.
Several architectures are using @align smaller than PAGE_SIZE breaking
percpu memory alignment.

This patch removes @align parameter from PERCPU(), renames it to
PERCPU_SECTION() and makes it always align to PAGE_SIZE.  While at it,
add PCPU_SETUP_BUG_ON() checks such that alignment problems are
reliably detected and remove percpu alignment comment recently added
in workqueue.c as the condition would trigger BUG way before reaching
there.

For um, this patch raises the alignment of percpu area.  As the area
is in .init, there shouldn't be any noticeable difference.

This problem was discovered by David Howells while debugging boot
failure on mn10300.

Signed-off-by: Tejun Heo 
Acked-by: Mike Frysinger 
Cc: uclinux-dist-devel@blackfin.uclinux.org
Cc: David Howells 
Cc: Jeff Dike 
Cc: user-mode-linux-devel@lists.sourceforge.net

Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

2011-03-17T02:03:06+00:00

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (91 commits)
  ARM: 6806/1: irq: introduce entry and exit functions for chained handlers
  ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas
  ARM: 6747/1: P2V: Thumb2 support
  ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
  ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode
  ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9
  ARM: 6772/1: errata: possible fault MMU translations following an ASID switch
  ARM: 6776/1: mach-ux500: activate fix for errata 753970
  ARM: 6794/1: SPEAr: Append UL to device address macros.
  ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files
  ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros
  ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code
  ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry
  ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci
  ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h
  ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files.
  ARM: 6681/1: SPEAr: add debugfs support to clk API
  ARM: 6703/1: SPEAr: update clk API support
  ARM: 6679/1: SPEAr: make clk API functions more generic
  ARM: 6737/1: SPEAr: formalized timer support
  ...

Merge branch 'p2v' into devel

2011-03-16T23:35:27+00:00

Conflicts:
	arch/arm/kernel/module.c
	arch/arm/mach-s5pv210/sleep.S

Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2011-03-16T15:22:41+00:00

* 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu, x86: Add arch-specific this_cpu_cmpxchg_double() support
  percpu: Generic support for this_cpu_cmpxchg_double()
  alpha: use L1_CACHE_BYTES for cacheline size in the linker script
  percpu: align percpu readmostly subsection to cacheline

Fix up trivial conflict in arch/x86/kernel/vmlinux.lds.S due to the
percpu alignment having changed ("x86: Reduce back the alignment of the
per-CPU data section")

ARM: Keep exit text/data around for SMP_ON_UP

2011-02-21T19:29:27+00:00

When SMP_ON_UP is used and the spinlocks are inlined, we end up with
inline spinlocks in the exit code, with references from the SMP
alternatives section to the exit sections.  This causes link time
errors.  Avoid this by placing the exit sections in the init-discarded
region.

Cc: 
Tested-by: Dave Martin 
Signed-off-by: Russell King