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
  ...

17 files changed, 0 insertions, 17 deletions

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 3cd0a0dc91cb..0906c194a413 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -33,7 +33,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/termios.h>	/* For TIOCINQ/OUTQ */
 #include <linux/mm.h>
diff --git a/net/ax25/ax25_addr.c b/net/ax25/ax25_addr.c
index 7e7964dd987b..9162409559cf 100644
--- a/net/ax25/ax25_addr.c
+++ b/net/ax25/ax25_addr.c
@@ -22,7 +22,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_dev.c b/net/ax25/ax25_dev.c
index c1cb982f6e86..d0de30e89591 100644
--- a/net/ax25/ax25_dev.c
+++ b/net/ax25/ax25_dev.c
@@ -24,7 +24,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_ds_in.c b/net/ax25/ax25_ds_in.c
index 8273b1200eee..9bd31e88aeca 100644
--- a/net/ax25/ax25_ds_in.c
+++ b/net/ax25/ax25_ds_in.c
@@ -23,7 +23,6 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_ds_subr.c b/net/ax25/ax25_ds_subr.c
index 85816e612dc0..5ea7fd3e2af9 100644
--- a/net/ax25/ax25_ds_subr.c
+++ b/net/ax25/ax25_ds_subr.c
@@ -24,7 +24,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_ds_timer.c b/net/ax25/ax25_ds_timer.c
index c7d81436213d..993c439b4f71 100644
--- a/net/ax25/ax25_ds_timer.c
+++ b/net/ax25/ax25_ds_timer.c
@@ -25,7 +25,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_iface.c b/net/ax25/ax25_iface.c
index 60b545e2822a..7d5f24b82cc8 100644
--- a/net/ax25/ax25_iface.c
+++ b/net/ax25/ax25_iface.c
@@ -24,7 +24,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 9bb776541203..96f4cab3a2f9 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -27,7 +27,6 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
index cf0c47a26530..846ae4e2b115 100644
--- a/net/ax25/ax25_ip.c
+++ b/net/ax25/ax25_ip.c
@@ -24,7 +24,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/termios.h>	/* For TIOCINQ/OUTQ */
 #include <linux/mm.h>
diff --git a/net/ax25/ax25_out.c b/net/ax25/ax25_out.c
index 37507d806f65..be8a25e0db65 100644
--- a/net/ax25/ax25_out.c
+++ b/net/ax25/ax25_out.c
@@ -27,7 +27,6 @@
 #include <linux/netfilter.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index 87fddab22e0f..a65588040b9e 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -32,7 +32,6 @@
 #include <linux/spinlock.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_std_in.c b/net/ax25/ax25_std_in.c
index a8eef88d8652..3fbf8f7b2cf4 100644
--- a/net/ax25/ax25_std_in.c
+++ b/net/ax25/ax25_std_in.c
@@ -30,7 +30,6 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_std_subr.c b/net/ax25/ax25_std_subr.c
index 277f81bb979a..8b66a41e538f 100644
--- a/net/ax25/ax25_std_subr.c
+++ b/net/ax25/ax25_std_subr.c
@@ -21,7 +21,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_std_timer.c b/net/ax25/ax25_std_timer.c
index 96e4b9273250..004467c9e6e1 100644
--- a/net/ax25/ax25_std_timer.c
+++ b/net/ax25/ax25_std_timer.c
@@ -25,7 +25,6 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_subr.c b/net/ax25/ax25_subr.c
index c6715ee4ab8f..1997538a5d23 100644
--- a/net/ax25/ax25_subr.c
+++ b/net/ax25/ax25_subr.c
@@ -26,7 +26,6 @@
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_timer.c b/net/ax25/ax25_timer.c
index db29ea71e80a..c3cffa79bafb 100644
--- a/net/ax25/ax25_timer.c
+++ b/net/ax25/ax25_timer.c
@@ -29,7 +29,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>
diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index 4c83137b5954..e3c579ba6325 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -26,7 +26,6 @@
 #include <linux/skbuff.h>
 #include <net/sock.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/interrupt.h>