linux-toradex.git/arch/arm/kernel/armksyms.c, branch v3.2.36

arm: convert core files from module.h to export.h

2011-10-31T23:30:49+00:00

Many of the core ARM kernel files are not modules, but just
including module.h for exporting symbols.  Now these files can
use the lighter footprint export.h for this role.

There are probably lots more, but ARM files of mach-* and plat-*
don't get coverage via a simple yesconfig build.  They will have
to be cleaned up and tested via using their respective configs.

Signed-off-by: Paul Gortmaker

ARM: 7068/1: process: change from __backtrace to dump_stack in show_regs

2011-10-17T08:12:41+00:00

Currently, show_regs calls __backtrace which does
nothing if CONFIG_FRAME_POINTER is not set. Switch to
dump_stack which handles both CONFIG_FRAME_POINTER and
CONFIG_ARM_UNWIND correctly.

__backtrace is now superseded by dump_stack in general
and show_regs was the last caller so remove __backtrace
as well.

Signed-off-by: Laura Abbott 
Acked-by: Nicolas Pitre 
Signed-off-by: Russell King

arm: remove stale export of 'sha_transform'

2011-08-07T22:49:11+00:00

The generic library code already exports the generic function, this was
left-over from the ARM-specific version that just got removed.

Signed-off-by: Linus Torvalds

Merge branch 'p2v' into devel

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

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

ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching

2011-02-17T23:27:32+00:00

This idea came from Nicolas, Eric Miao produced an initial version,
which was then rewritten into this.

Patch the physical to virtual translations at runtime.  As we modify
the code, this makes it incompatible with XIP kernels, but allows us
to achieve this with minimal loss of performance.

As many translations are of the form:

	physical = virtual + (PHYS_OFFSET - PAGE_OFFSET)
	virtual = physical - (PHYS_OFFSET - PAGE_OFFSET)

we generate an 'add' instruction for __virt_to_phys(), and a 'sub'
instruction for __phys_to_virt().  We calculate at run time (PHYS_OFFSET
- PAGE_OFFSET) by comparing the address prior to MMU initialization with
where it should be once the MMU has been initialized, and place this
constant into the above add/sub instructions.

Once we have (PHYS_OFFSET - PAGE_OFFSET), we can calculate the real
PHYS_OFFSET as PAGE_OFFSET is a build-time constant, and save this for
the C-mode PHYS_OFFSET variable definition to use.

At present, we are unable to support Realview with Sparsemem enabled
as this uses a complex mapping function, and MSM as this requires a
constant which will not fit in our math instruction.

Add a module version magic string for this feature to prevent
incompatible modules being loaded.

Tested-by: Tony Lindgren 
Reviewed-by: Nicolas Pitre 
Tested-by: Nicolas Pitre 
Signed-off-by: Russell King

ARM: bitops: switch set/clear/change bitops to use ldrex/strex

2011-02-02T21:23:25+00:00

Switch the set/clear/change bitops to use the word-based exclusive
operations, which are only present in a wider range of ARM architectures
than the byte-based exclusive operations.

Tested record:
- Nicolas Pitre: ext3,rw,le
- Sourav Poddar: nfs,le
- Will Deacon: ext3,rw,le
- Tony Lindgren: ext3+nfs,le

Reviewed-by: Nicolas Pitre 
Tested-by: Sourav Poddar 
Tested-by: Will Deacon 
Tested-by: Tony Lindgren 
Signed-off-by: Russell King

ARM: 6314/1: ftrace: allow build without frame pointers on ARM

2010-09-02T14:24:53+00:00

With a new enough GCC, ARM function tracing can be supported without the
need for frame pointers.  This is essential for Thumb-2 support, since
frame pointers aren't available then.

Acked-by: Catalin Marinas 
Acked-by: Steven Rostedt 
Signed-off-by: Rabin Vincent 
Signed-off-by: Russell King

ARM: unexport symbols used to implement floating point emulation

2009-12-15T05:58:22+00:00

The Kconfigs for in-tree floating point emulation do not allow building
as modules. That leaves the Acorn FPEmulator module. I found two public
releases of this as a binary module for 2.1 and 2.2 kernels, optimized
for ARMV4.[1] If there is a resurgence of interest in this, the symbols
can always be re-exported.

This allows the EXPORT_SYMBOL_ALIAS() hack to be removed. The ulterior
motive here is that EXPORT_SYMBOL_ALIAS() makes it harder to sort the
resulting kernel symbol tables.  Sorted symbol tables will allow faster
symbol resolution during module loading.

Note that fp_send_sigs() and fp_printk() are simply aliases for existing
exports and add no obvious value.  Similarly fp_enter could easily be
renamed to kern_fp_enter at the point of definition. Therefore removing
EXPORT_SYMBOL_ALIAS will not serve as a material obstacle to re-adding
the exports should they be desired in future.

Build tested only.

[1] http://ftp.arm.linux.org.uk/pub/linux/arm/fpemulator/

Signed-off-by: Alan Jenkins 
CC: Russell King 
Signed-off-by: Rusty Russell

[ARM] support tracing when using newer compilers

2009-08-13T18:34:36+00:00

Since gcc 4.4 the name and calling convention for function profiling
on ARM changed.  With this patch both types are supported.

See http://sourceware.org/ml/libc-ports/2008-04/msg00009.html for some
details.

Lightly-Tested-by: Anand Gadiyar 
Tested-by: Kevin Hilman 
Signed-off-by: Uwe Kleine-König

Merge branch 'mxc-pu-imxfb' of git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6 into devel

2008-12-17T20:04:45+00:00