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Linus Torvalds 0195c00244 Disintegrate and delete asm/system.h 
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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system

Pull "Disintegrate and delete asm/system.h" from David Howells:
 "Here are a bunch of patches to disintegrate asm/system.h into a set of
  separate bits to relieve the problem of circular inclusion
  dependencies.

  I've built all the working defconfigs from all the arches that I can
  and made sure that they don't break.

  The reason for these patches is that I recently encountered a circular
  dependency problem that came about when I produced some patches to
  optimise get_order() by rewriting it to use ilog2().

  This uses bitops - and on the SH arch asm/bitops.h drags in
  asm-generic/get_order.h by a circuituous route involving asm/system.h.

  The main difficulty seems to be asm/system.h.  It holds a number of
  low level bits with no/few dependencies that are commonly used (eg.
  memory barriers) and a number of bits with more dependencies that
  aren't used in many places (eg.  switch_to()).

  These patches break asm/system.h up into the following core pieces:

    (1) asm/barrier.h

        Move memory barriers here.  This already done for MIPS and Alpha.

    (2) asm/switch_to.h

        Move switch_to() and related stuff here.

    (3) asm/exec.h

        Move arch_align_stack() here.  Other process execution related bits
        could perhaps go here from asm/processor.h.

    (4) asm/cmpxchg.h

        Move xchg() and cmpxchg() here as they're full word atomic ops and
        frequently used by atomic_xchg() and atomic_cmpxchg().

    (5) asm/bug.h

        Move die() and related bits.

    (6) asm/auxvec.h

        Move AT_VECTOR_SIZE_ARCH here.

  Other arch headers are created as needed on a per-arch basis."

Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that.  We'll find out anything that got broken and fix it..

* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
  Delete all instances of asm/system.h
  Remove all #inclusions of asm/system.h
  Add #includes needed to permit the removal of asm/system.h
  Move all declarations of free_initmem() to linux/mm.h
  Disintegrate asm/system.h for OpenRISC
  Split arch_align_stack() out from asm-generic/system.h
  Split the switch_to() wrapper out of asm-generic/system.h
  Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
  Create asm-generic/barrier.h
  Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
  Disintegrate asm/system.h for Xtensa
  Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
  Disintegrate asm/system.h for Tile
  Disintegrate asm/system.h for Sparc
  Disintegrate asm/system.h for SH
  Disintegrate asm/system.h for Score
  Disintegrate asm/system.h for S390
  Disintegrate asm/system.h for PowerPC
  Disintegrate asm/system.h for PA-RISC
  Disintegrate asm/system.h for MN10300
  ...
2012-03-28 15:58:21 -07:00
..
align.S
asm-offsets.c xtensa: Shuffle include statements to fix linker script 2010-05-02 01:05:13 -07:00
coprocessor.S [XTENSA] Add support for configurable registers and coprocessors 2008-02-13 17:41:43 -08:00
entry.S Fix common misspellings 2011-03-31 11:26:23 -03:00
head.S xtensa: Fixes due to bss boundary symbol name changes. 2010-05-01 23:05:29 -07:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
io.c [XTENSA] Move string-io functions to io.c from pci.c 2007-08-27 13:53:22 -07:00
irq.c xtensa: Fixup irq conversion fallout and nmi_count 2011-04-20 00:32:09 +02:00
Makefile xtensa: Fix linker script patch-up 2010-05-01 23:00:07 -07:00
module.c modules: make arch's use default loader hooks 2011-07-24 22:06:04 +09:30
pci-dma.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pci.c xtensa/PCI: get rid of device resource fixups 2012-02-23 20:19:04 -07:00
platform.c xtensa: remove platform rtc hooks 2009-04-02 23:45:07 -07:00
process.c Disintegrate asm/system.h for Xtensa 2012-03-28 18:30:03 +01:00
ptrace.c Disintegrate asm/system.h for Xtensa 2012-03-28 18:30:03 +01:00
setup.c Disintegrate asm/system.h for Xtensa 2012-03-28 18:30:03 +01:00
signal.c xtensa: use set_current_blocked() and block_sigmask() 2012-03-21 17:54:55 -07:00
syscall.c sanitize do_pipe_flags() callers in arch 2009-12-16 12:16:40 -05:00
time.c clocksource: xtensa: Convert to clocksource_register_hz/khz 2011-11-21 19:01:04 -08:00
traps.c Disintegrate asm/system.h for Xtensa 2012-03-28 18:30:03 +01:00
vectors.S xtensa: includecheck fix: vectors.S 2010-05-25 08:06:56 -07:00
vmlinux.lds.S percpu: Always align percpu output section to PAGE_SIZE 2011-03-24 18:50:09 +01:00
xtensa_ksyms.c remove unneeded #include <linux/ide.h>'s 2008-08-05 18:17:00 +02:00