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
  ...

12 files changed, 0 insertions, 12 deletions

diff --git a/drivers/video/amifb.c b/drivers/video/amifb.c
index f23cae094f1b..887df9d81422 100644
--- a/drivers/video/amifb.c
+++ b/drivers/video/amifb.c
@@ -53,7 +53,6 @@
 #include <linux/platform_device.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 #include <asm/irq.h>
 #include <asm/amigahw.h>
 #include <asm/amigaints.h>
diff --git a/drivers/video/bt431.h b/drivers/video/bt431.h
index c826f2787bad..04e0cfbba538 100644
--- a/drivers/video/bt431.h
+++ b/drivers/video/bt431.h
@@ -8,7 +8,6 @@
  *	archive for more details.
  */
 #include <linux/types.h>
-#include <asm/system.h>
 
 /*
  * Bt431 cursor generator registers, 32-bit aligned.
diff --git a/drivers/video/bt455.h b/drivers/video/bt455.h
index b7591fea7add..80f61b03e9ae 100644
--- a/drivers/video/bt455.h
+++ b/drivers/video/bt455.h
@@ -8,7 +8,6 @@
  *	archive for more details.
  */
 #include <linux/types.h>
-#include <asm/system.h>
 
 /*
  * Bt455 byte-wide registers, 32-bit aligned.
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 8745637e4b7e..2e471c22abf5 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -77,7 +77,6 @@
 #include <linux/crc32.h> /* For counting font checksums */
 #include <asm/fb.h>
 #include <asm/irq.h>
-#include <asm/system.h>
 
 #include "fbcon.h"
 
diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
index a122d9287d16..6d1596629040 100644
--- a/drivers/video/console/newport_con.c
+++ b/drivers/video/console/newport_con.c
@@ -22,7 +22,6 @@
 
 #include <asm/io.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/gio_device.h>
diff --git a/drivers/video/cyber2000fb.c b/drivers/video/cyber2000fb.c
index 850380795b05..c1527f5b47ee 100644
--- a/drivers/video/cyber2000fb.c
+++ b/drivers/video/cyber2000fb.c
@@ -51,7 +51,6 @@
 #include <linux/i2c-algo-bit.h>
 
 #include <asm/pgtable.h>
-#include <asm/system.h>
 
 #ifdef __arm__
 #include <asm/mach-types.h>
diff --git a/drivers/video/dnfb.c b/drivers/video/dnfb.c
index ec56d2544c73..49e3dda1a361 100644
--- a/drivers/video/dnfb.c
+++ b/drivers/video/dnfb.c
@@ -7,7 +7,6 @@
 #include <linux/platform_device.h>
 
 #include <asm/setup.h>
-#include <asm/system.h>
 #include <asm/irq.h>
 #include <asm/amigahw.h>
 #include <asm/amigaints.h>
diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c
index fb3f67391105..afc9521173ef 100644
--- a/drivers/video/neofb.c
+++ b/drivers/video/neofb.c
@@ -71,7 +71,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 
 #ifdef CONFIG_MTRR
 #include <asm/mtrr.h>
diff --git a/drivers/video/pmag-ba-fb.c b/drivers/video/pmag-ba-fb.c
index 0c69fa20251b..9b4a60b52a4c 100644
--- a/drivers/video/pmag-ba-fb.c
+++ b/drivers/video/pmag-ba-fb.c
@@ -33,7 +33,6 @@
 #include <linux/types.h>
 
 #include <asm/io.h>
-#include <asm/system.h>
 
 #include <video/pmag-ba-fb.h>
 
diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c
index 22fcb9a3d5c0..4e7a9c46e112 100644
--- a/drivers/video/pmagb-b-fb.c
+++ b/drivers/video/pmagb-b-fb.c
@@ -29,7 +29,6 @@
 #include <linux/types.h>
 
 #include <asm/io.h>
-#include <asm/system.h>
 
 #include <video/pmagb-b-fb.h>
 
diff --git a/drivers/video/q40fb.c b/drivers/video/q40fb.c
index f5a39f5aa900..a104e8cd2f54 100644
--- a/drivers/video/q40fb.c
+++ b/drivers/video/q40fb.c
@@ -20,7 +20,6 @@
 
 #include <asm/uaccess.h>
 #include <asm/setup.h>
-#include <asm/system.h>
 #include <asm/q40_master.h>
 #include <linux/fb.h>
 #include <linux/module.h>
diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index beb495044b24..cee7803a0a1c 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -56,7 +56,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 
 #ifdef CONFIG_MTRR
 #include <asm/mtrr.h>