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
  ...

23 files changed, 1 insertions, 22 deletions

diff --git a/drivers/watchdog/advantechwdt.c b/drivers/watchdog/advantechwdt.c
index 72e81058176a..64ae9e9fed94 100644
--- a/drivers/watchdog/advantechwdt.c
+++ b/drivers/watchdog/advantechwdt.c
@@ -42,7 +42,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define DRV_NAME "advantechwdt"
 #define WATCHDOG_NAME "Advantech WDT"
diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c
index b9e9558ab218..5eee55012e33 100644
--- a/drivers/watchdog/alim7101_wdt.c
+++ b/drivers/watchdog/alim7101_wdt.c
@@ -36,7 +36,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define WDT_ENABLE 0x9C
 #define WDT_DISABLE 0x8C
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index 3990d82f935c..ce0ab4415eff 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -23,7 +23,6 @@
 #include <linux/uaccess.h>
 
 #include <asm/reg_booke.h>
-#include <asm/system.h>
 #include <asm/time.h>
 #include <asm/div64.h>
 
diff --git a/drivers/watchdog/eurotechwdt.c b/drivers/watchdog/eurotechwdt.c
index 0c60af14ac65..cd31b8a2a729 100644
--- a/drivers/watchdog/eurotechwdt.c
+++ b/drivers/watchdog/eurotechwdt.c
@@ -61,7 +61,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 static unsigned long eurwdt_is_open;
 static int eurwdt_timeout;
diff --git a/drivers/watchdog/ib700wdt.c b/drivers/watchdog/ib700wdt.c
index e187664eaca4..184c0bfc87a4 100644
--- a/drivers/watchdog/ib700wdt.c
+++ b/drivers/watchdog/ib700wdt.c
@@ -46,7 +46,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 static struct platform_device *ibwdt_platform_device;
 static unsigned long ibwdt_is_open;
diff --git a/drivers/watchdog/it87_wdt.c b/drivers/watchdog/it87_wdt.c
index 405ae7be7c6f..8a741bcb5124 100644
--- a/drivers/watchdog/it87_wdt.c
+++ b/drivers/watchdog/it87_wdt.c
@@ -45,7 +45,6 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 
-#include <asm/system.h>
 
 #define WATCHDOG_VERSION	"1.14"
 #define WATCHDOG_NAME		"IT87 WDT"
diff --git a/drivers/watchdog/machzwd.c b/drivers/watchdog/machzwd.c
index 52ed8834cedb..bf84f788e592 100644
--- a/drivers/watchdog/machzwd.c
+++ b/drivers/watchdog/machzwd.c
@@ -45,7 +45,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 /* ports */
 #define ZF_IOBASE	0x218
diff --git a/drivers/watchdog/pc87413_wdt.c b/drivers/watchdog/pc87413_wdt.c
index d5bf112e0077..5afb89b48650 100644
--- a/drivers/watchdog/pc87413_wdt.c
+++ b/drivers/watchdog/pc87413_wdt.c
@@ -35,7 +35,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 /* #define DEBUG 1 */
 
diff --git a/drivers/watchdog/sbc60xxwdt.c b/drivers/watchdog/sbc60xxwdt.c
index 6b41276755bc..63632ec87c7e 100644
--- a/drivers/watchdog/sbc60xxwdt.c
+++ b/drivers/watchdog/sbc60xxwdt.c
@@ -65,7 +65,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define OUR_NAME "sbc60xxwdt"
 #define PFX OUR_NAME ": "
diff --git a/drivers/watchdog/sbc7240_wdt.c b/drivers/watchdog/sbc7240_wdt.c
index 8ab757d3df5f..719edc8fdeb3 100644
--- a/drivers/watchdog/sbc7240_wdt.c
+++ b/drivers/watchdog/sbc7240_wdt.c
@@ -32,7 +32,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 #include <linux/atomic.h>
-#include <asm/system.h>
 
 #define SBC7240_ENABLE_PORT		0x443
 #define SBC7240_DISABLE_PORT		0x043
diff --git a/drivers/watchdog/sbc8360.c b/drivers/watchdog/sbc8360.c
index a9ea385fa125..d4781e05f017 100644
--- a/drivers/watchdog/sbc8360.c
+++ b/drivers/watchdog/sbc8360.c
@@ -53,7 +53,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 static unsigned long sbc8360_is_open;
 static char expect_close;
diff --git a/drivers/watchdog/sbc_fitpc2_wdt.c b/drivers/watchdog/sbc_fitpc2_wdt.c
index 840428529227..90d5527ca886 100644
--- a/drivers/watchdog/sbc_fitpc2_wdt.c
+++ b/drivers/watchdog/sbc_fitpc2_wdt.c
@@ -25,7 +25,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
 static unsigned int margin = 60;	/* (secs) Default is 1 minute */
diff --git a/drivers/watchdog/sc520_wdt.c b/drivers/watchdog/sc520_wdt.c
index d1ef58579a37..707e027e5002 100644
--- a/drivers/watchdog/sc520_wdt.c
+++ b/drivers/watchdog/sc520_wdt.c
@@ -69,7 +69,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 /*
  * The AMD Elan SC520 timeout value is 492us times a power of 2 (0-7)
diff --git a/drivers/watchdog/smsc37b787_wdt.c b/drivers/watchdog/smsc37b787_wdt.c
index 4c3400574ada..6d665f9c1d58 100644
--- a/drivers/watchdog/smsc37b787_wdt.c
+++ b/drivers/watchdog/smsc37b787_wdt.c
@@ -60,7 +60,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 /* enable support for minutes as units? */
 /* (does not always work correctly, so disabled by default!) */
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index 452980361c63..92f1326f0cfc 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -42,7 +42,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define WATCHDOG_NAME "w83627hf/thf/hg/dhg WDT"
 #define WATCHDOG_TIMEOUT 60		/* 60 sec default timeout */
diff --git a/drivers/watchdog/w83697hf_wdt.c b/drivers/watchdog/w83697hf_wdt.c
index f5c9d9901acc..cd9f3c1e1af4 100644
--- a/drivers/watchdog/w83697hf_wdt.c
+++ b/drivers/watchdog/w83697hf_wdt.c
@@ -41,7 +41,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define WATCHDOG_NAME "w83697hf/hg WDT"
 #define WATCHDOG_TIMEOUT 60		/* 60 sec default timeout */
diff --git a/drivers/watchdog/w83697ug_wdt.c b/drivers/watchdog/w83697ug_wdt.c
index ab45bfdf935c..274be0bfaf24 100644
--- a/drivers/watchdog/w83697ug_wdt.c
+++ b/drivers/watchdog/w83697ug_wdt.c
@@ -46,7 +46,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define WATCHDOG_NAME "w83697ug/uf WDT"
 #define WATCHDOG_TIMEOUT 60		/* 60 sec default timeout */
diff --git a/drivers/watchdog/w83877f_wdt.c b/drivers/watchdog/w83877f_wdt.c
index e76e7e309301..7874ae06232b 100644
--- a/drivers/watchdog/w83877f_wdt.c
+++ b/drivers/watchdog/w83877f_wdt.c
@@ -58,7 +58,6 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
-#include <asm/system.h>
 
 #define OUR_NAME "w83877f_wdt"
 
diff --git a/drivers/watchdog/w83977f_wdt.c b/drivers/watchdog/w83977f_wdt.c
index 56bfded1f361..5d2c902825c2 100644
--- a/drivers/watchdog/w83977f_wdt.c
+++ b/drivers/watchdog/w83977f_wdt.c
@@ -31,7 +31,6 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 
-#include <asm/system.h>
 
 #define WATCHDOG_VERSION  "1.00"
 #define WATCHDOG_NAME     "W83977F WDT"
diff --git a/drivers/watchdog/wdt.c b/drivers/watchdog/wdt.c
index 64079d933c63..ee4333c01109 100644
--- a/drivers/watchdog/wdt.c
+++ b/drivers/watchdog/wdt.c
@@ -48,7 +48,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 #include "wd501p.h"
 
 static unsigned long wdt_is_open;
diff --git a/drivers/watchdog/wdt285.c b/drivers/watchdog/wdt285.c
index 3daa330ae436..5eec74053882 100644
--- a/drivers/watchdog/wdt285.c
+++ b/drivers/watchdog/wdt285.c
@@ -34,6 +34,7 @@
 #include <mach/hardware.h>
 
 #include <asm/mach-types.h>
+#include <asm/system_info.h>
 #include <asm/hardware/dec21285.h>
 
 /*
diff --git a/drivers/watchdog/wdt977.c b/drivers/watchdog/wdt977.c
index 2de1632708a0..65a402344933 100644
--- a/drivers/watchdog/wdt977.c
+++ b/drivers/watchdog/wdt977.c
@@ -39,7 +39,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 #include <asm/mach-types.h>
 
 #define WATCHDOG_VERSION  "0.04"
diff --git a/drivers/watchdog/wdt_pci.c b/drivers/watchdog/wdt_pci.c
index a3cea594c8f2..1c888c7d4cce 100644
--- a/drivers/watchdog/wdt_pci.c
+++ b/drivers/watchdog/wdt_pci.c
@@ -55,7 +55,6 @@
 #include <linux/io.h>
 #include <linux/uaccess.h>
 
-#include <asm/system.h>
 
 #define WDT_IS_PCI
 #include "wd501p.h"