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
  ...

11 files changed, 13 insertions, 5 deletions

diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index caf14dc059e5..9107231aacc5 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -22,7 +22,8 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
+#include <asm/cp15.h>
+#include <asm/system_info.h>
 #include <asm/unaligned.h>
 
 #include "fault.h"
diff --git a/arch/arm/mm/cache-feroceon-l2.c b/arch/arm/mm/cache-feroceon-l2.c
index e0b0e7a4ec68..dd3d59122cc3 100644
--- a/arch/arm/mm/cache-feroceon-l2.c
+++ b/arch/arm/mm/cache-feroceon-l2.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/highmem.h>
 #include <asm/cacheflush.h>
+#include <asm/cp15.h>
 #include <plat/cache-feroceon-l2.h>
 
 /*
diff --git a/arch/arm/mm/cache-tauros2.c b/arch/arm/mm/cache-tauros2.c
index 50868651890f..1fbca05fe906 100644
--- a/arch/arm/mm/cache-tauros2.c
+++ b/arch/arm/mm/cache-tauros2.c
@@ -16,6 +16,7 @@
 
 #include <linux/init.h>
 #include <asm/cacheflush.h>
+#include <asm/cp15.h>
 #include <asm/hardware/cache-tauros2.h>
 
 
diff --git a/arch/arm/mm/cache-xsc3l2.c b/arch/arm/mm/cache-xsc3l2.c
index 5a32020471e3..6c3edeb66e74 100644
--- a/arch/arm/mm/cache-xsc3l2.c
+++ b/arch/arm/mm/cache-xsc3l2.c
@@ -18,7 +18,7 @@
  */
 #include <linux/init.h>
 #include <linux/highmem.h>
-#include <asm/system.h>
+#include <asm/cp15.h>
 #include <asm/cputype.h>
 #include <asm/cacheflush.h>
 
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index bb7eac381a8e..5bdff5c3e6cb 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -21,8 +21,9 @@
 #include <linux/perf_event.h>
 
 #include <asm/exception.h>
-#include <asm/system.h>
 #include <asm/pgtable.h>
+#include <asm/system_misc.h>
+#include <asm/system_info.h>
 #include <asm/tlbflush.h>
 
 #include "fault.h"
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 1a8d4aa821be..062d61a1f87d 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -16,7 +16,6 @@
 #include <asm/cachetype.h>
 #include <asm/highmem.h>
 #include <asm/smp_plat.h>
-#include <asm/system.h>
 #include <asm/tlbflush.h>
 
 #include "mm.h"
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index feacf4c76712..ab88ed4f8e08 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -5,6 +5,7 @@
 #include <asm/pgalloc.h>
 #include <asm/pgtable.h>
 #include <asm/sections.h>
+#include <asm/system_info.h>
 
 pgd_t *idmap_pgd;
 
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 80632e8d7538..6780b49f2c69 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -26,12 +26,14 @@
 #include <linux/vmalloc.h>
 #include <linux/io.h>
 
+#include <asm/cp15.h>
 #include <asm/cputype.h>
 #include <asm/cacheflush.h>
 #include <asm/mmu_context.h>
 #include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <asm/sizes.h>
+#include <asm/system_info.h>
 
 #include <asm/mach/map.h>
 #include "mm.h"
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 94c5a0c94f5e..cd439c1dd506 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -17,6 +17,7 @@
 #include <linux/fs.h>
 #include <linux/vmalloc.h>
 
+#include <asm/cp15.h>
 #include <asm/cputype.h>
 #include <asm/sections.h>
 #include <asm/cachetype.h>
@@ -25,6 +26,7 @@
 #include <asm/smp_plat.h>
 #include <asm/tlb.h>
 #include <asm/highmem.h>
+#include <asm/system_info.h>
 #include <asm/traps.h>
 
 #include <asm/mach/arch.h>
diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
index a3e78ccabd65..0acb089d0f70 100644
--- a/arch/arm/mm/pgd.c
+++ b/arch/arm/mm/pgd.c
@@ -12,6 +12,7 @@
 #include <linux/highmem.h>
 #include <linux/slab.h>
 
+#include <asm/cp15.h>
 #include <asm/pgalloc.h>
 #include <asm/page.h>
 #include <asm/tlbflush.h>
diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S
index 272558a133a3..d217e9795d74 100644
--- a/arch/arm/mm/proc-fa526.S
+++ b/arch/arm/mm/proc-fa526.S
@@ -22,7 +22,6 @@
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
-#include <asm/system.h>
 
 #include "proc-macros.S"