[PATCH v2 0/9] more non-ABI asm-generic headers

[PATCH v2 0/9] more non-ABI asm-generic headers

[Arnd Bergmann]

I reviewed my patches again after input from David Miller and
others, hopefully I have found a way to send out patches again.
This series is much smaller now, I consolidated some patches
according to logic grouping, and left out the microblaze
stuff, which is probably just boring everyone except Michal.

This should fix the broken From: and Date: headers in the
mail, which caused problems, while the contents are unchanged
from my earlier submission.

	Arnd <><

[PATCH v2 1/9] asm-generic: rename atomic.h to atomic-long.h

[Arnd Bergmann]

[-- Attachment #1: 0001-asm-generic-rename-atomic.h-to-atomic-long.h.patch --]
[-- Type: text/plain, Size: 13880 bytes --]

The existing asm-generic/atomic.h only defines the
atomic_long type. This renames it to atomic-long.h
so we have a place to add a truly generic atomic.h
that can be used on all non-SMP systems.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
---
 arch/alpha/include/asm/atomic.h                 |    2 +-
 arch/arm/include/asm/atomic.h                   |    2 +-
 arch/avr32/include/asm/atomic.h                 |    2 +-
 arch/blackfin/include/asm/atomic.h              |    2 +-
 arch/cris/include/asm/atomic.h                  |    2 +-
 arch/frv/include/asm/atomic.h                   |    2 +-
 arch/h8300/include/asm/atomic.h                 |    2 +-
 arch/ia64/include/asm/atomic.h                  |    2 +-
 arch/m32r/include/asm/atomic.h                  |    2 +-
 arch/m68k/include/asm/atomic_mm.h               |    2 +-
 arch/m68k/include/asm/atomic_no.h               |    2 +-
 arch/microblaze/include/asm/atomic.h            |    2 +-
 arch/mips/include/asm/atomic.h                  |    2 +-
 arch/mn10300/include/asm/atomic.h               |    2 +-
 arch/parisc/include/asm/atomic.h                |    2 +-
 arch/powerpc/include/asm/atomic.h               |    2 +-
 arch/s390/include/asm/atomic.h                  |    2 +-
 arch/sh/include/asm/atomic.h                    |    2 +-
 arch/sparc/include/asm/atomic_32.h              |    2 +-
 arch/sparc/include/asm/atomic_64.h              |    2 +-
 arch/x86/include/asm/atomic_32.h                |    2 +-
 arch/x86/include/asm/atomic_64.h                |    2 +-
 arch/xtensa/include/asm/atomic.h                |    2 +-
 include/asm-generic/{atomic.h => atomic-long.h} |    6 +++---
 include/asm-generic/bitops/atomic.h             |    1 +
 25 files changed, 27 insertions(+), 26 deletions(-)
 rename include/asm-generic/{atomic.h => atomic-long.h} (97%)

diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index 62b3635..610dff4 100644
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -256,5 +256,5 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 #define smp_mb__before_atomic_inc()	smp_mb()
 #define smp_mb__after_atomic_inc()	smp_mb()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* _ALPHA_ATOMIC_H */
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index ee99723..828e1e7 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -206,6 +206,6 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif
 #endif
diff --git a/arch/avr32/include/asm/atomic.h b/arch/avr32/include/asm/atomic.h
index 3188151..b131c27 100644
--- a/arch/avr32/include/asm/atomic.h
+++ b/arch/avr32/include/asm/atomic.h
@@ -196,6 +196,6 @@ static inline int atomic_sub_if_positive(int i, atomic_t *v)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif /*  __ASM_AVR32_ATOMIC_H */
diff --git a/arch/blackfin/include/asm/atomic.h b/arch/blackfin/include/asm/atomic.h
index 94b2a9b..7bbf44e 100644
--- a/arch/blackfin/include/asm/atomic.h
+++ b/arch/blackfin/include/asm/atomic.h
@@ -208,6 +208,6 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
 #define atomic_sub_and_test(i,v) (atomic_sub_return((i), (v)) == 0)
 #define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif				/* __ARCH_BLACKFIN_ATOMIC __ */
diff --git a/arch/cris/include/asm/atomic.h b/arch/cris/include/asm/atomic.h
index 5718dd8..a6aca81 100644
--- a/arch/cris/include/asm/atomic.h
+++ b/arch/cris/include/asm/atomic.h
@@ -158,5 +158,5 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()    barrier()
 #define smp_mb__after_atomic_inc()     barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif
diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
index 296c35c..0409d98 100644
--- a/arch/frv/include/asm/atomic.h
+++ b/arch/frv/include/asm/atomic.h
@@ -194,5 +194,5 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
 
 #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* _ASM_ATOMIC_H */
diff --git a/arch/h8300/include/asm/atomic.h b/arch/h8300/include/asm/atomic.h
index 833186c..33c8c0f 100644
--- a/arch/h8300/include/asm/atomic.h
+++ b/arch/h8300/include/asm/atomic.h
@@ -141,5 +141,5 @@ static __inline__ void atomic_set_mask(unsigned long mask, unsigned long *v)
 #define smp_mb__before_atomic_inc()    barrier()
 #define smp_mb__after_atomic_inc() barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __ARCH_H8300_ATOMIC __ */
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index d37292b..88405cb 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -216,5 +216,5 @@ atomic64_add_negative (__s64 i, atomic64_t *v)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* _ASM_IA64_ATOMIC_H */
diff --git a/arch/m32r/include/asm/atomic.h b/arch/m32r/include/asm/atomic.h
index 2eed30f..63f0cf0 100644
--- a/arch/m32r/include/asm/atomic.h
+++ b/arch/m32r/include/asm/atomic.h
@@ -314,5 +314,5 @@ static __inline__ void atomic_set_mask(unsigned long  mask, atomic_t *addr)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif	/* _ASM_M32R_ATOMIC_H */
diff --git a/arch/m68k/include/asm/atomic_mm.h b/arch/m68k/include/asm/atomic_mm.h
index eb0ab9d..88b7af2 100644
--- a/arch/m68k/include/asm/atomic_mm.h
+++ b/arch/m68k/include/asm/atomic_mm.h
@@ -192,5 +192,5 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __ARCH_M68K_ATOMIC __ */
diff --git a/arch/m68k/include/asm/atomic_no.h b/arch/m68k/include/asm/atomic_no.h
index 6bb6748..5674cb9 100644
--- a/arch/m68k/include/asm/atomic_no.h
+++ b/arch/m68k/include/asm/atomic_no.h
@@ -151,5 +151,5 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
 #define atomic_dec_return(v) atomic_sub_return(1,(v))
 #define atomic_inc_return(v) atomic_add_return(1,(v))
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __ARCH_M68KNOMMU_ATOMIC __ */
diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h
index a448d94..0de612a 100644
--- a/arch/microblaze/include/asm/atomic.h
+++ b/arch/microblaze/include/asm/atomic.h
@@ -118,6 +118,6 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif /* _ASM_MICROBLAZE_ATOMIC_H */
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 1b332e1..eb7f01c 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -793,6 +793,6 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 #define smp_mb__before_atomic_inc()	smp_llsc_mb()
 #define smp_mb__after_atomic_inc()	smp_llsc_mb()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif /* _ASM_ATOMIC_H */
diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h
index bc06482..5bf5be9 100644
--- a/arch/mn10300/include/asm/atomic.h
+++ b/arch/mn10300/include/asm/atomic.h
@@ -151,7 +151,7 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_ATOMIC_H */
diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index ada3e53..7eeaff9 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -338,6 +338,6 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #endif /* CONFIG_64BIT */
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 
 #endif /* _ASM_PARISC_ATOMIC_H_ */
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index b401950..b7d2d07 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -472,6 +472,6 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #endif /* __powerpc64__ */
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_ATOMIC_H_ */
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index de432f2..fca9dff 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -275,6 +275,6 @@ static __inline__ int atomic64_add_unless(atomic64_t *v,
 #define smp_mb__before_atomic_inc()	smp_mb()
 #define smp_mb__after_atomic_inc()	smp_mb()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __KERNEL__ */
 #endif /* __ARCH_S390_ATOMIC__  */
diff --git a/arch/sh/include/asm/atomic.h b/arch/sh/include/asm/atomic.h
index 6327ffb..a5647d0 100644
--- a/arch/sh/include/asm/atomic.h
+++ b/arch/sh/include/asm/atomic.h
@@ -84,5 +84,5 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __ASM_SH_ATOMIC_H */
diff --git a/arch/sparc/include/asm/atomic_32.h b/arch/sparc/include/asm/atomic_32.h
index bb91b12..f0d343c 100644
--- a/arch/sparc/include/asm/atomic_32.h
+++ b/arch/sparc/include/asm/atomic_32.h
@@ -161,5 +161,5 @@ static inline int __atomic24_sub(int i, atomic24_t *v)
 
 #endif /* !(__KERNEL__) */
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* !(__ARCH_SPARC_ATOMIC__) */
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index a0a7064..f2e4800 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -114,5 +114,5 @@ static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* !(__ARCH_SPARC64_ATOMIC__) */
diff --git a/arch/x86/include/asm/atomic_32.h b/arch/x86/include/asm/atomic_32.h
index 85b46fb..c83d314 100644
--- a/arch/x86/include/asm/atomic_32.h
+++ b/arch/x86/include/asm/atomic_32.h
@@ -247,5 +247,5 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* _ASM_X86_ATOMIC_32_H */
diff --git a/arch/x86/include/asm/atomic_64.h b/arch/x86/include/asm/atomic_64.h
index 8c21731..0d63602 100644
--- a/arch/x86/include/asm/atomic_64.h
+++ b/arch/x86/include/asm/atomic_64.h
@@ -455,5 +455,5 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* _ASM_X86_ATOMIC_64_H */
diff --git a/arch/xtensa/include/asm/atomic.h b/arch/xtensa/include/asm/atomic.h
index 67ad67b..22d6dde 100644
--- a/arch/xtensa/include/asm/atomic.h
+++ b/arch/xtensa/include/asm/atomic.h
@@ -292,7 +292,7 @@ static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
 #define smp_mb__before_atomic_inc()	barrier()
 #define smp_mb__after_atomic_inc()	barrier()
 
-#include <asm-generic/atomic.h>
+#include <asm-generic/atomic-long.h>
 #endif /* __KERNEL__ */
 
 #endif /* _XTENSA_ATOMIC_H */
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic-long.h
similarity index 97%
rename from include/asm-generic/atomic.h
rename to include/asm-generic/atomic-long.h
index 7abdaa9..a24a51c 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic-long.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_GENERIC_ATOMIC_H
-#define _ASM_GENERIC_ATOMIC_H
+#ifndef _ASM_GENERIC_ATOMIC_LONG_H
+#define _ASM_GENERIC_ATOMIC_LONG_H
 /*
  * Copyright (C) 2005 Silicon Graphics, Inc.
  *	Christoph Lameter
@@ -255,4 +255,4 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 
 #endif  /*  BITS_PER_LONG == 64  */
 
-#endif  /*  _ASM_GENERIC_ATOMIC_H  */
+#endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */
diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h
index 4657f3e..c894646 100644
--- a/include/asm-generic/bitops/atomic.h
+++ b/include/asm-generic/bitops/atomic.h
@@ -2,6 +2,7 @@
 #define _ASM_GENERIC_BITOPS_ATOMIC_H_
 
 #include <asm/types.h>
+#include <asm/system.h>
 
 #ifdef CONFIG_SMP
 #include <asm/spinlock.h>
-- 
1.5.6.3

-- 

[PATCH v2 2/9] asm-generic: rename page.h to getorder.h

[Arnd Bergmann]

[-- Attachment #1: 0002-asm-generic-rename-page.h-to-getorder.h.patch --]
[-- Type: text/plain, Size: 11309 bytes --]

The current asm-generic/page.h only contains the get_order
function. This renames the file to getorder.h to make
room for a new page.h file that will be usable by all
nommu architectures.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/alpha/include/asm/page.h              |    2 +-
 arch/arm/include/asm/page.h                |    2 +-
 arch/blackfin/include/asm/page.h           |    2 +-
 arch/cris/include/asm/page.h               |    2 +-
 arch/frv/include/asm/page.h                |    2 +-
 arch/h8300/include/asm/page.h              |    2 +-
 arch/m32r/include/asm/page.h               |    2 +-
 arch/m68k/include/asm/page_mm.h            |    2 +-
 arch/m68k/include/asm/page_no.h            |    2 +-
 arch/microblaze/include/asm/page.h         |    2 +-
 arch/mips/include/asm/page.h               |    2 +-
 arch/parisc/include/asm/page.h             |    2 +-
 arch/powerpc/include/asm/page_32.h         |    2 +-
 arch/powerpc/include/asm/page_64.h         |    2 +-
 arch/s390/include/asm/page.h               |    2 +-
 arch/sh/include/asm/page.h                 |    2 +-
 arch/sparc/include/asm/page_32.h           |    2 +-
 arch/sparc/include/asm/page_64.h           |    2 +-
 arch/um/include/asm/page.h                 |    2 +-
 arch/x86/include/asm/page.h                |    2 +-
 arch/xtensa/include/asm/page.h             |    2 +-
 include/asm-generic/{page.h => getorder.h} |    8 ++++----
 22 files changed, 25 insertions(+), 25 deletions(-)
 rename include/asm-generic/{page.h => getorder.h} (59%)

diff --git a/arch/alpha/include/asm/page.h b/arch/alpha/include/asm/page.h
index 0995f9d..07af062 100644
--- a/arch/alpha/include/asm/page.h
+++ b/arch/alpha/include/asm/page.h
@@ -93,6 +93,6 @@ typedef struct page *pgtable_t;
 					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ALPHA_PAGE_H */
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index e6eb8a6..dee70a3 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -209,6 +209,6 @@ typedef struct page *pgtable_t;
 #define ARCH_SLAB_MINALIGN 8
 #endif
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif
diff --git a/arch/blackfin/include/asm/page.h b/arch/blackfin/include/asm/page.h
index 344f6a8..3ea2016 100644
--- a/arch/blackfin/include/asm/page.h
+++ b/arch/blackfin/include/asm/page.h
@@ -81,7 +81,7 @@ extern unsigned long memory_end;
 #define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
 				((void *)(kaddr) < (void *)memory_end))
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif				/* __ASSEMBLY__ */
 
diff --git a/arch/cris/include/asm/page.h b/arch/cris/include/asm/page.h
index f3fdbd0..be45ee3 100644
--- a/arch/cris/include/asm/page.h
+++ b/arch/cris/include/asm/page.h
@@ -68,7 +68,7 @@ typedef struct page *pgtable_t;
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _CRIS_PAGE_H */
 
diff --git a/arch/frv/include/asm/page.h b/arch/frv/include/asm/page.h
index bd9c220..25c6a50 100644
--- a/arch/frv/include/asm/page.h
+++ b/arch/frv/include/asm/page.h
@@ -73,6 +73,6 @@ extern unsigned long max_pfn;
 #endif /* __ASSEMBLY__ */
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ASM_PAGE_H */
diff --git a/arch/h8300/include/asm/page.h b/arch/h8300/include/asm/page.h
index 0b6acf0..837381a 100644
--- a/arch/h8300/include/asm/page.h
+++ b/arch/h8300/include/asm/page.h
@@ -73,6 +73,6 @@ extern unsigned long memory_end;
 #endif /* __ASSEMBLY__ */
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _H8300_PAGE_H */
diff --git a/arch/m32r/include/asm/page.h b/arch/m32r/include/asm/page.h
index c933308..11777f7 100644
--- a/arch/m32r/include/asm/page.h
+++ b/arch/m32r/include/asm/page.h
@@ -82,6 +82,6 @@ typedef struct page *pgtable_t;
 #define devmem_is_allowed(x) 1
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ASM_M32R_PAGE_H */
diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index a34b8ba..d009f3e 100644
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -223,6 +223,6 @@ static inline __attribute_const__ int __virt_to_node_shift(void)
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _M68K_PAGE_H */
diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h
index 3a1ede4..9aa3f90 100644
--- a/arch/m68k/include/asm/page_no.h
+++ b/arch/m68k/include/asm/page_no.h
@@ -72,6 +72,6 @@ extern unsigned long memory_end;
 
 #endif /* __ASSEMBLY__ */
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _M68KNOMMU_PAGE_H */
diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 7238dcf..962c210 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -135,6 +135,6 @@ extern unsigned int memory_size;
 #endif /* __KERNEL__ */
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ASM_MICROBLAZE_PAGE_H */
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index fe7a88e..8a271b6 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -186,6 +186,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ASM_PAGE_H */
diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 7bc5125..a84cc1f 100644
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -159,6 +159,6 @@ extern int npmem_ranges;
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _PARISC_PAGE_H */
diff --git a/arch/powerpc/include/asm/page_32.h b/arch/powerpc/include/asm/page_32.h
index a0e3f6e..bd0849d 100644
--- a/arch/powerpc/include/asm/page_32.h
+++ b/arch/powerpc/include/asm/page_32.h
@@ -41,7 +41,7 @@ extern void clear_pages(void *page, int order);
 static inline void clear_page(void *page) { clear_pages(page, 0); }
 extern void copy_page(void *to, void *from);
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #define PGD_T_LOG2	(__builtin_ffs(sizeof(pgd_t)) - 1)
 #define PTE_T_LOG2	(__builtin_ffs(sizeof(pte_t)) - 1)
diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h
index 043bfdf..5817a3b 100644
--- a/arch/powerpc/include/asm/page_64.h
+++ b/arch/powerpc/include/asm/page_64.h
@@ -180,6 +180,6 @@ do {						\
 	(test_thread_flag(TIF_32BIT) ? \
 	 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _ASM_POWERPC_PAGE_64_H */
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 32e8f6a..3e3594d 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -150,7 +150,7 @@ void arch_alloc_page(struct page *page, int order);
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #define __HAVE_ARCH_GATE_AREA 1
 
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h
index 9c6d21e..49592c7 100644
--- a/arch/sh/include/asm/page.h
+++ b/arch/sh/include/asm/page.h
@@ -163,7 +163,7 @@ typedef struct page *pgtable_t;
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 /* vDSO support */
 #ifdef CONFIG_VSYSCALL
diff --git a/arch/sparc/include/asm/page_32.h b/arch/sparc/include/asm/page_32.h
index d1806ed..f72080b 100644
--- a/arch/sparc/include/asm/page_32.h
+++ b/arch/sparc/include/asm/page_32.h
@@ -152,6 +152,6 @@ extern unsigned long pfn_base;
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _SPARC_PAGE_H */
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h
index 4274ed1..f0d09b4 100644
--- a/arch/sparc/include/asm/page_64.h
+++ b/arch/sparc/include/asm/page_64.h
@@ -132,6 +132,6 @@ typedef struct page *pgtable_t;
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif /* _SPARC64_PAGE_H */
diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
index 55f28a0..4cc9b6c 100644
--- a/arch/um/include/asm/page.h
+++ b/arch/um/include/asm/page.h
@@ -116,7 +116,7 @@ extern unsigned long uml_physmem;
 #define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #endif	/* __ASSEMBLY__ */
 #endif	/* __UM_PAGE_H */
diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index 89ed9d7..625c3f0 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -56,7 +56,7 @@ extern bool __virt_addr_valid(unsigned long kaddr);
 #endif	/* __ASSEMBLY__ */
 
 #include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
+#include <asm-generic/getorder.h>
 
 #define __HAVE_ARCH_GATE_AREA 1
 
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
index 17e0c53..161bb89 100644
--- a/arch/xtensa/include/asm/page.h
+++ b/arch/xtensa/include/asm/page.h
@@ -129,7 +129,7 @@ static inline __attribute_const__ int get_order(unsigned long size)
 
 #else
 
-# include <asm-generic/page.h>
+# include <asm-generic/getorder.h>
 
 #endif
 
diff --git a/include/asm-generic/page.h b/include/asm-generic/getorder.h
similarity index 59%
rename from include/asm-generic/page.h
rename to include/asm-generic/getorder.h
index 14db733..67e7245 100644
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/getorder.h
@@ -1,12 +1,12 @@
-#ifndef _ASM_GENERIC_PAGE_H
-#define _ASM_GENERIC_PAGE_H
+#ifndef __ASM_GENERIC_GETORDER_H
+#define __ASM_GENERIC_GETORDER_H
 
 #ifndef __ASSEMBLY__
 
 #include <linux/compiler.h>
 
 /* Pure 2^n version of get_order */
-static __inline__ __attribute_const__ int get_order(unsigned long size)
+static inline __attribute_const__ int get_order(unsigned long size)
 {
 	int order;
 
@@ -21,4 +21,4 @@ static __inline__ __attribute_const__ int get_order(unsigned long size)
 
 #endif	/* __ASSEMBLY__ */
 
-#endif	/* _ASM_GENERIC_PAGE_H */
+#endif	/* __ASM_GENERIC_GETORDER_H */
-- 
1.5.6.3

-- 

[PATCH v2 3/9] asm-generic: rename uaccess.h to uaccess-unaligned.h

[Arnd Bergmann]

[-- Attachment #1: 0003-asm-generic-rename-uaccess.h-to-uaccess-unaligned.h.patch --]
[-- Type: text/plain, Size: 2159 bytes --]

The asm-generic/uaccess.h file is only implementing
unaligned accesses. Rename it to uaccess-unaligned.h
so we can replace it with a generic uaccess.h for
all NOMMU architectures.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/parisc/include/asm/uaccess.h                  |    2 +-
 arch/sparc/include/asm/uaccess_64.h                |    2 +-
 .../asm-generic/{uaccess.h => uaccess-unaligned.h} |    6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)
 rename include/asm-generic/{uaccess.h => uaccess-unaligned.h} (82%)

diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index cd4c0b2..7cf799d 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -7,7 +7,7 @@
 #include <asm/page.h>
 #include <asm/system.h>
 #include <asm/cache.h>
-#include <asm-generic/uaccess.h>
+#include <asm-generic/uaccess-unaligned.h>
 
 #define VERIFY_READ 0
 #define VERIFY_WRITE 1
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index c64e767..a38c032 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -12,7 +12,7 @@
 #include <asm/asi.h>
 #include <asm/system.h>
 #include <asm/spitfire.h>
-#include <asm-generic/uaccess.h>
+#include <asm-generic/uaccess-unaligned.h>
 #endif
 
 #ifndef __ASSEMBLY__
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess-unaligned.h
similarity index 82%
rename from include/asm-generic/uaccess.h
rename to include/asm-generic/uaccess-unaligned.h
index 549cb3a..67deb89 100644
--- a/include/asm-generic/uaccess.h
+++ b/include/asm-generic/uaccess-unaligned.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_GENERIC_UACCESS_H_
-#define _ASM_GENERIC_UACCESS_H_
+#ifndef __ASM_GENERIC_UACCESS_UNALIGNED_H
+#define __ASM_GENERIC_UACCESS_UNALIGNED_H
 
 /*
  * This macro should be used instead of __get_user() when accessing
@@ -23,4 +23,4 @@
 	__copy_to_user((ptr), &__x, sizeof(*(ptr))) ? -EFAULT : 0;	\
 })
 
-#endif /* _ASM_GENERIC_UACCESS_H */
+#endif /* __ASM_GENERIC_UACCESS_UNALIGNED_H */
-- 
1.5.6.3

-- 

[PATCH v2 4/9] asm-generic: make pci.h usable directly

[Arnd Bergmann]

[-- Attachment #1: 0004-asm-generic-make-pci.h-usable-directly.patch --]
[-- Type: text/plain, Size: 2444 bytes --]

Some generic code is using the horribly misnamed PCI_DMA_BUS_IS_PHYS
from asm/pci.h. This makes sure that an architecture without PCI
support does not have to define this itself but can rely on the
asm-generic version.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
---
 arch/frv/include/asm/pci.h  |   13 +++----------
 arch/m32r/include/asm/pci.h |    2 --
 include/asm-generic/pci.h   |    8 ++++++++
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/arch/frv/include/asm/pci.h b/arch/frv/include/asm/pci.h
index 585d9b4..3ce227b 100644
--- a/arch/frv/include/asm/pci.h
+++ b/arch/frv/include/asm/pci.h
@@ -10,8 +10,8 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#ifndef ASM_PCI_H
-#define	ASM_PCI_H
+#ifndef _ASM_FRV_PCI_H
+#define _ASM_FRV_PCI_H
 
 #include <linux/mm.h>
 #include <asm/scatterlist.h>
@@ -43,12 +43,6 @@ extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
 /* Return the index of the PCI controller for device PDEV. */
 #define pci_controller_num(PDEV)	(0)
 
-/* The PCI address space does equal the physical memory
- * address space.  The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS	(1)
-
 /* pci_unmap_{page,single} is a nop so... */
 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
@@ -114,5 +108,4 @@ static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
 				    sg_dma_address(&sg[i])+sg_dma_len(&sg[i]));
 }
 
-
-#endif
+#endif /* _ASM_FRV_PCI_H */
diff --git a/arch/m32r/include/asm/pci.h b/arch/m32r/include/asm/pci.h
index fe785d1..07d3834 100644
--- a/arch/m32r/include/asm/pci.h
+++ b/arch/m32r/include/asm/pci.h
@@ -3,6 +3,4 @@
 
 #include <asm-generic/pci.h>
 
-#define PCI_DMA_BUS_IS_PHYS	(1)
-
 #endif /* _ASM_M32R_PCI_H */
diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
index c36a77d..515c6e2 100644
--- a/include/asm-generic/pci.h
+++ b/include/asm-generic/pci.h
@@ -52,4 +52,12 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 }
 #endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
 
+/*
+ * By default, assume that no iommu is in use and that the PCI
+ * space is mapped to address physical 0.
+ */
+#ifndef PCI_DMA_BUS_IS_PHYS
+#define PCI_DMA_BUS_IS_PHYS	(1)
 #endif
+
+#endif /* _ASM_GENERIC_PCI_H */
-- 
1.5.6.3

-- 

[PATCH v2 5/9] asm-generic: make bitops.h usable

[Arnd Bergmann]

[-- Attachment #1: 0005-asm-generic-make-bitops.h-usable.patch --]
[-- Type: text/plain, Size: 2053 bytes --]

bitops.h apparently suffered from some level of bitrot, it
was missing the smp_mb__{before,after}_clear_bit functions,
and included other headers in an invalid order.

This changes the file so that new architectures can use
it out of the box.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
---
 include/asm-generic/bitops.h |   24 ++++++++++++++++++------
 1 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h
index c9f369c..a54f442 100644
--- a/include/asm-generic/bitops.h
+++ b/include/asm-generic/bitops.h
@@ -1,19 +1,29 @@
-#ifndef _ASM_GENERIC_BITOPS_H_
-#define _ASM_GENERIC_BITOPS_H_
+#ifndef __ASM_GENERIC_BITOPS_H
+#define __ASM_GENERIC_BITOPS_H
 
 /*
  * For the benefit of those who are trying to port Linux to another
  * architecture, here are some C-language equivalents.  You should
  * recode these in the native assembly language, if at all possible.
- * 
+ *
  * C language equivalents written by Theodore Ts'o, 9/26/92
  */
 
-#include <asm-generic/bitops/atomic.h>
-#include <asm-generic/bitops/non-atomic.h>
+#include <linux/irqflags.h>
+#include <linux/compiler.h>
+
+/*
+ * clear_bit may not imply a memory barrier
+ */
+#ifndef smp_mb__before_clear_bit
+#define smp_mb__before_clear_bit()	smp_mb()
+#define smp_mb__after_clear_bit()	smp_mb()
+#endif
+
 #include <asm-generic/bitops/__ffs.h>
 #include <asm-generic/bitops/ffz.h>
 #include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
 #include <asm-generic/bitops/fls64.h>
 #include <asm-generic/bitops/find.h>
 
@@ -26,8 +36,10 @@
 #include <asm-generic/bitops/hweight.h>
 #include <asm-generic/bitops/lock.h>
 
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
 #include <asm-generic/bitops/ext2-non-atomic.h>
 #include <asm-generic/bitops/ext2-atomic.h>
 #include <asm-generic/bitops/minix.h>
 
-#endif /* _ASM_GENERIC_BITOPS_H */
+#endif /* __ASM_GENERIC_BITOPS_H */
-- 
1.5.6.3

-- 

[PATCH v2 6/9] asm-generic: add generic versions of common headers

[Arnd Bergmann]

[-- Attachment #1: 0006-asm-generic-add-generic-versions-of-common-headers.patch --]
[-- Type: text/plain, Size: 18233 bytes --]

These are all kernel internal interfaces that get copied
around a lot. In most cases, architectures can provide
their own optimized versions, but these generic versions
can work as well.

I have tried to use the most common contents of each
header to allow existing architectures to migrate easily.

Thanks to Remis for suggesting a number of cleanups.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 include/asm-generic/bugs.h        |   10 +++
 include/asm-generic/current.h     |    9 ++
 include/asm-generic/delay.h       |    9 ++
 include/asm-generic/fb.h          |   12 +++
 include/asm-generic/hardirq.h     |   34 ++++++++
 include/asm-generic/irq.h         |   18 ++++
 include/asm-generic/irqflags.h    |   72 ++++++++++++++++
 include/asm-generic/kmap_types.h  |   29 +++++++
 include/asm-generic/linkage.h     |    8 ++
 include/asm-generic/module.h      |   22 +++++
 include/asm-generic/mutex.h       |    9 ++
 include/asm-generic/scatterlist.h |   43 ++++++++++
 include/asm-generic/spinlock.h    |   11 +++
 include/asm-generic/string.h      |   10 +++
 include/asm-generic/syscalls.h    |   60 ++++++++++++++
 include/asm-generic/system.h      |  161 +++++++++++++++++++++++++++++++++++++
 include/asm-generic/user.h        |    8 ++
 17 files changed, 525 insertions(+), 0 deletions(-)
 create mode 100644 include/asm-generic/bugs.h
 create mode 100644 include/asm-generic/current.h
 create mode 100644 include/asm-generic/delay.h
 create mode 100644 include/asm-generic/fb.h
 create mode 100644 include/asm-generic/hardirq.h
 create mode 100644 include/asm-generic/irq.h
 create mode 100644 include/asm-generic/irqflags.h
 create mode 100644 include/asm-generic/kmap_types.h
 create mode 100644 include/asm-generic/linkage.h
 create mode 100644 include/asm-generic/module.h
 create mode 100644 include/asm-generic/mutex.h
 create mode 100644 include/asm-generic/scatterlist.h
 create mode 100644 include/asm-generic/spinlock.h
 create mode 100644 include/asm-generic/string.h
 create mode 100644 include/asm-generic/syscalls.h
 create mode 100644 include/asm-generic/system.h
 create mode 100644 include/asm-generic/user.h

diff --git a/include/asm-generic/bugs.h b/include/asm-generic/bugs.h
new file mode 100644
index 0000000..6c4f62e
--- /dev/null
+++ b/include/asm-generic/bugs.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_GENERIC_BUGS_H
+#define __ASM_GENERIC_BUGS_H
+/*
+ * This file is included by 'init/main.c' to check for
+ * architecture-dependent bugs.
+ */
+
+static inline void check_bugs(void) { }
+
+#endif	/* __ASM_GENERIC_BUGS_H */
diff --git a/include/asm-generic/current.h b/include/asm-generic/current.h
new file mode 100644
index 0000000..5e86f6a
--- /dev/null
+++ b/include/asm-generic/current.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_GENERIC_CURRENT_H
+#define __ASM_GENERIC_CURRENT_H
+
+#include <linux/thread_info.h>
+
+#define get_current() (current_thread_info()->task)
+#define current get_current()
+
+#endif /* __ASM_GENERIC_CURRENT_H */
diff --git a/include/asm-generic/delay.h b/include/asm-generic/delay.h
new file mode 100644
index 0000000..4586fec
--- /dev/null
+++ b/include/asm-generic/delay.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_GENERIC_DELAY_H
+#define __ASM_GENERIC_DELAY_H
+
+extern void __udelay(unsigned long usecs);
+extern void __delay(unsigned long loops);
+
+#define udelay(n) __udelay(n)
+
+#endif /* __ASM_GENERIC_DELAY_H */
diff --git a/include/asm-generic/fb.h b/include/asm-generic/fb.h
new file mode 100644
index 0000000..fe8ca7f
--- /dev/null
+++ b/include/asm-generic/fb.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_GENERIC_FB_H_
+#define __ASM_GENERIC_FB_H_
+#include <linux/fb.h>
+
+#define fb_pgprotect(...) do {} while (0)
+
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+	return 0;
+}
+
+#endif /* __ASM_GENERIC_FB_H_ */
diff --git a/include/asm-generic/hardirq.h b/include/asm-generic/hardirq.h
new file mode 100644
index 0000000..3d5d2c9
--- /dev/null
+++ b/include/asm-generic/hardirq.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_GENERIC_HARDIRQ_H
+#define __ASM_GENERIC_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <linux/threads.h>
+#include <linux/irq.h>
+
+typedef struct {
+	unsigned long __softirq_pending;
+} ____cacheline_aligned irq_cpustat_t;
+
+#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
+
+#ifndef HARDIRQ_BITS
+#define HARDIRQ_BITS	8
+#endif
+
+/*
+ * The hardirq mask has to be large enough to have
+ * space for potentially all IRQ sources in the system
+ * nesting on a single CPU:
+ */
+#if (1 << HARDIRQ_BITS) < NR_IRQS
+# error HARDIRQ_BITS is too low!
+#endif
+
+#ifndef ack_bad_irq
+static inline void ack_bad_irq(unsigned int irq)
+{
+	printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq);
+}
+#endif
+
+#endif /* __ASM_GENERIC_HARDIRQ_H */
diff --git a/include/asm-generic/irq.h b/include/asm-generic/irq.h
new file mode 100644
index 0000000..b90ec0b
--- /dev/null
+++ b/include/asm-generic/irq.h
@@ -0,0 +1,18 @@
+#ifndef __ASM_GENERIC_IRQ_H
+#define __ASM_GENERIC_IRQ_H
+
+/*
+ * NR_IRQS is the upper bound of how many interrupts can be handled
+ * in the platform. It is used to size the static irq_map array,
+ * so don't make it too big.
+ */
+#ifndef NR_IRQS
+#define NR_IRQS 64
+#endif
+
+static inline int irq_canonicalize(int irq)
+{
+	return irq;
+}
+
+#endif /* __ASM_GENERIC_IRQ_H */
diff --git a/include/asm-generic/irqflags.h b/include/asm-generic/irqflags.h
new file mode 100644
index 0000000..9aebf61
--- /dev/null
+++ b/include/asm-generic/irqflags.h
@@ -0,0 +1,72 @@
+#ifndef __ASM_GENERIC_IRQFLAGS_H
+#define __ASM_GENERIC_IRQFLAGS_H
+
+/*
+ * All architectures should implement at least the first two functions,
+ * usually inline assembly will be the best way.
+ */
+#ifndef RAW_IRQ_DISABLED
+#define RAW_IRQ_DISABLED 0
+#define RAW_IRQ_ENABLED 1
+#endif
+
+/* read interrupt enabled status */
+#ifndef __raw_local_save_flags
+unsigned long __raw_local_save_flags(void);
+#endif
+
+/* set interrupt enabled status */
+#ifndef raw_local_irq_restore
+void raw_local_irq_restore(unsigned long flags);
+#endif
+
+/* get status and disable interrupts */
+#ifndef __raw_local_irq_save
+static inline unsigned long __raw_local_irq_save(void)
+{
+	unsigned long flags;
+	flags = __raw_local_save_flags();
+	raw_local_irq_restore(RAW_IRQ_DISABLED);
+	return flags;
+}
+#endif
+
+/* test flags */
+#ifndef raw_irqs_disabled_flags
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+	return flags == RAW_IRQ_DISABLED;
+}
+#endif
+
+/* unconditionally enable interrupts */
+#ifndef raw_local_irq_enable
+static inline void raw_local_irq_enable(void)
+{
+	raw_local_irq_restore(RAW_IRQ_ENABLED);
+}
+#endif
+
+/* unconditionally disable interrupts */
+#ifndef raw_local_irq_disable
+static inline void raw_local_irq_disable(void)
+{
+	raw_local_irq_restore(RAW_IRQ_DISABLED);
+}
+#endif
+
+/* test hardware interrupt enable bit */
+#ifndef raw_irqs_disabled
+static inline int raw_irqs_disabled(void)
+{
+	return raw_irqs_disabled_flags(__raw_local_save_flags());
+}
+#endif
+
+#define raw_local_save_flags(flags) \
+	do { (flags) = __raw_local_save_flags(); } while (0)
+
+#define raw_local_irq_save(flags) \
+	do { (flags) = __raw_local_irq_save(); } while (0)
+
+#endif /* __ASM_GENERIC_IRQFLAGS_H */
diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h
new file mode 100644
index 0000000..36996bc
--- /dev/null
+++ b/include/asm-generic/kmap_types.h
@@ -0,0 +1,29 @@
+#ifndef __ASM_GENERIC_KMAP_TYPES_H
+#define __ASM_GENERIC_KMAP_TYPES_H
+
+#ifdef CONFIG_DEBUG_HIGHMEM
+# define D(n) __KM_FENCE_##n ,
+#else
+# define D(n)
+#endif
+
+enum km_type {
+D(0)	KM_BOUNCE_READ,
+D(1)	KM_SKB_SUNRPC_DATA,
+D(2)	KM_SKB_DATA_SOFTIRQ,
+D(3)	KM_USER0,
+D(4)	KM_USER1,
+D(5)	KM_BIO_SRC_IRQ,
+D(6)	KM_BIO_DST_IRQ,
+D(7)	KM_PTE0,
+D(8)	KM_PTE1,
+D(9)	KM_IRQ0,
+D(10)	KM_IRQ1,
+D(11)	KM_SOFTIRQ0,
+D(12)	KM_SOFTIRQ1,
+D(13)	KM_TYPE_NR
+};
+
+#undef D
+
+#endif /* __ASM_GENERIC_KMAP_TYPES_H */
diff --git a/include/asm-generic/linkage.h b/include/asm-generic/linkage.h
new file mode 100644
index 0000000..fef7a01
--- /dev/null
+++ b/include/asm-generic/linkage.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_GENERIC_LINKAGE_H
+#define __ASM_GENERIC_LINKAGE_H
+/*
+ * linux/linkage.h provides reasonable defaults.
+ * an architecture can override them by providing its own version.
+ */
+
+#endif /* __ASM_GENERIC_LINKAGE_H */
diff --git a/include/asm-generic/module.h b/include/asm-generic/module.h
new file mode 100644
index 0000000..ed5b44d
--- /dev/null
+++ b/include/asm-generic/module.h
@@ -0,0 +1,22 @@
+#ifndef __ASM_GENERIC_MODULE_H
+#define __ASM_GENERIC_MODULE_H
+
+/*
+ * Many architectures just need a simple module
+ * loader without arch specific data.
+ */
+struct mod_arch_specific
+{
+};
+
+#ifdef CONFIG_64BIT
+#define Elf_Shdr Elf64_Shdr
+#define Elf_Sym Elf64_Sym
+#define Elf_Ehdr Elf64_Ehdr
+#else
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Ehdr Elf32_Ehdr
+#endif
+
+#endif /* __ASM_GENERIC_MODULE_H */
diff --git a/include/asm-generic/mutex.h b/include/asm-generic/mutex.h
new file mode 100644
index 0000000..fe91ab5
--- /dev/null
+++ b/include/asm-generic/mutex.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_GENERIC_MUTEX_H
+#define __ASM_GENERIC_MUTEX_H
+/*
+ * Pull in the generic implementation for the mutex fastpath,
+ * which is a reasonable default on many architectures.
+ */
+
+#include <asm-generic/mutex-dec.h>
+#endif /* __ASM_GENERIC_MUTEX_H */
diff --git a/include/asm-generic/scatterlist.h b/include/asm-generic/scatterlist.h
new file mode 100644
index 0000000..8b94544
--- /dev/null
+++ b/include/asm-generic/scatterlist.h
@@ -0,0 +1,43 @@
+#ifndef __ASM_GENERIC_SCATTERLIST_H
+#define __ASM_GENERIC_SCATTERLIST_H
+
+#include <linux/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+	unsigned long	sg_magic;
+#endif
+	unsigned long	page_link;
+	unsigned int	offset;
+	unsigned int	length;
+	dma_addr_t	dma_address;
+	unsigned int	dma_length;
+};
+
+/*
+ * These macros should be used after a dma_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg)	((sg)->dma_address)
+#ifndef sg_dma_len
+/*
+ * Normally, you have an iommu on 64 bit machines, but not on 32 bit
+ * machines. Architectures that are differnt should override this.
+ */
+#if __BITS_PER_LONG == 64
+#define sg_dma_len(sg)		((sg)->dma_length)
+#else
+#define sg_dma_len(sg)		((sg)->length)
+#endif /* 64 bit */
+#endif /* sg_dma_len */
+
+#ifndef ISA_DMA_THRESHOLD
+#define ISA_DMA_THRESHOLD	(~0UL)
+#endif
+
+#define ARCH_HAS_SG_CHAIN
+
+#endif /* __ASM_GENERIC_SCATTERLIST_H */
diff --git a/include/asm-generic/spinlock.h b/include/asm-generic/spinlock.h
new file mode 100644
index 0000000..1547a03
--- /dev/null
+++ b/include/asm-generic/spinlock.h
@@ -0,0 +1,11 @@
+#ifndef __ASM_GENERIC_SPINLOCK_H
+#define __ASM_GENERIC_SPINLOCK_H
+/*
+ * You need to implement asm/spinlock.h for SMP support. The generic
+ * version does not handle SMP.
+ */
+#ifdef CONFIG_SMP
+#error need an architecture specific asm/spinlock.h
+#endif
+
+#endif /* __ASM_GENERIC_SPINLOCK_H */
diff --git a/include/asm-generic/string.h b/include/asm-generic/string.h
new file mode 100644
index 0000000..de5e020
--- /dev/null
+++ b/include/asm-generic/string.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_GENERIC_STRING_H
+#define __ASM_GENERIC_STRING_H
+/*
+ * The kernel provides all required functions in lib/string.c
+ *
+ * Architectures probably want to provide at least their own optimized
+ * memcpy and memset functions though.
+ */
+
+#endif /* __ASM_GENERIC_STRING_H */
diff --git a/include/asm-generic/syscalls.h b/include/asm-generic/syscalls.h
new file mode 100644
index 0000000..df84e3b
--- /dev/null
+++ b/include/asm-generic/syscalls.h
@@ -0,0 +1,60 @@
+#ifndef __ASM_GENERIC_SYSCALLS_H
+#define __ASM_GENERIC_SYSCALLS_H
+
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+
+/*
+ * Calling conventions for these system calls can differ, so
+ * it's possible to override them.
+ */
+#ifndef sys_clone
+asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp,
+			void __user *parent_tid, void __user *child_tid,
+			struct pt_regs *regs);
+#endif
+
+#ifndef sys_fork
+asmlinkage long sys_fork(struct pt_regs *regs);
+#endif
+
+#ifndef sys_vfork
+asmlinkage long sys_vfork(struct pt_regs *regs);
+#endif
+
+#ifndef sys_execve
+asmlinkage long sys_execve(char __user *filename, char __user * __user *argv,
+			char __user * __user *envp, struct pt_regs *regs);
+#endif
+
+#ifndef sys_mmap2
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+			unsigned long prot, unsigned long flags,
+			unsigned long fd, unsigned long pgoff);
+#endif
+
+#ifndef sys_mmap
+asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
+			unsigned long prot, unsigned long flags,
+			unsigned long fd, off_t pgoff);
+#endif
+
+#ifndef sys_sigaltstack
+asmlinkage long sys_sigaltstack(const stack_t __user *, stack_t __user *,
+			struct pt_regs *);
+#endif
+
+#ifndef sys_rt_sigreturn
+asmlinkage long sys_rt_sigreturn(struct pt_regs *regs);
+#endif
+
+#ifndef sys_rt_sigsuspend
+asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
+#endif
+
+#ifndef sys_rt_sigaction
+asmlinkage long sys_rt_sigaction(int sig, const struct sigaction __user *act,
+			 struct sigaction __user *oact, size_t sigsetsize);
+#endif
+
+#endif /* __ASM_GENERIC_SYSCALLS_H */
diff --git a/include/asm-generic/system.h b/include/asm-generic/system.h
new file mode 100644
index 0000000..efa403b
--- /dev/null
+++ b/include/asm-generic/system.h
@@ -0,0 +1,161 @@
+/* Generic system definitions, based on MN10300 definitions.
+ *
+ * It should be possible to use these on really simple architectures,
+ * but it serves more as a starting point for new ports.
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_SYSTEM_H
+#define __ASM_GENERIC_SYSTEM_H
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+#include <linux/irqflags.h>
+
+#include <asm/cmpxchg-local.h>
+
+struct task_struct;
+
+/* context switching is now performed out-of-line in switch_to.S */
+extern struct task_struct *__switch_to(struct task_struct *,
+		struct task_struct *);
+#define switch_to(prev, next, last)					\
+	do {								\
+		((last) = __switch_to((prev), (next)));			\
+	} while (0)
+
+#define arch_align_stack(x) (x)
+
+#define nop() asm volatile ("nop")
+
+#endif /* !__ASSEMBLY__ */
+
+/*
+ * Force strict CPU ordering.
+ * And yes, this is required on UP too when we're talking
+ * to devices.
+ *
+ * This implementation only contains a compiler barrier.
+ */
+
+#define mb()	asm volatile ("": : :"memory")
+#define rmb()	mb()
+#define wmb()	asm volatile ("": : :"memory")
+
+#ifdef CONFIG_SMP
+#define smp_mb()	mb()
+#define smp_rmb()	rmb()
+#define smp_wmb()	wmb()
+#else
+#define smp_mb()	barrier()
+#define smp_rmb()	barrier()
+#define smp_wmb()	barrier()
+#endif
+
+#define set_mb(var, value)  do { var = value;  mb(); } while (0)
+#define set_wmb(var, value) do { var = value; wmb(); } while (0)
+
+#define read_barrier_depends()		do {} while (0)
+#define smp_read_barrier_depends()	do {} while (0)
+
+/*
+ * we make sure local_irq_enable() doesn't cause priority inversion
+ */
+#ifndef __ASSEMBLY__
+
+/* This function doesn't exist, so you'll get a linker error
+ *    if something tries to do an invalid xchg().  */
+extern void __xchg_called_with_bad_pointer(void);
+
+static inline
+unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
+{
+	unsigned long ret, flags;
+
+	switch (size) {
+	case 1:
+#ifdef __xchg_u8
+		return __xchg_u8(x, ptr);
+#else
+		local_irq_save(flags);
+		ret = *(volatile u8 *)ptr;
+		*(volatile u8 *)ptr = x;
+		local_irq_restore(flags);
+		return ret;
+#endif /* __xchg_u8 */
+
+	case 2:
+#ifdef __xchg_u16
+		return __xchg_u16(x, ptr);
+#else
+		local_irq_save(flags);
+		ret = *(volatile u16 *)ptr;
+		*(volatile u16 *)ptr = x;
+		local_irq_restore(flags);
+		return ret;
+#endif /* __xchg_u16 */
+
+	case 4:
+#ifdef __xchg_u32
+		return __xchg_u32(x, ptr);
+#else
+		local_irq_save(flags);
+		ret = *(volatile u32 *)ptr;
+		*(volatile u32 *)ptr = x;
+		local_irq_restore(flags);
+		return ret;
+#endif /* __xchg_u32 */
+
+#ifdef CONFIG_64BIT
+	case 8:
+#ifdef __xchg_u64
+		return __xchg_u64(x, ptr);
+#else
+		local_irq_save(flags);
+		ret = *(volatile u64 *)ptr;
+		*(volatile u64 *)ptr = x;
+		local_irq_restore(flags);
+		return ret;
+#endif /* __xchg_u64 */
+#endif /* CONFIG_64BIT */
+
+	default:
+		__xchg_called_with_bad_pointer();
+		return x;
+	}
+}
+
+#define xchg(ptr, x) \
+	((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+static inline unsigned long __cmpxchg(volatile unsigned long *m,
+				      unsigned long old, unsigned long new)
+{
+	unsigned long retval;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	retval = *m;
+	if (retval == old)
+		*m = new;
+	local_irq_restore(flags);
+	return retval;
+}
+
+#define cmpxchg(ptr, o, n)					\
+	((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
+					(unsigned long)(o),	\
+					(unsigned long)(n)))
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_GENERIC_SYSTEM_H */
diff --git a/include/asm-generic/user.h b/include/asm-generic/user.h
new file mode 100644
index 0000000..8b9c3c9
--- /dev/null
+++ b/include/asm-generic/user.h
@@ -0,0 +1,8 @@
+#ifndef __ASM_GENERIC_USER_H
+#define __ASM_GENERIC_USER_H
+/*
+ * This file may define a 'struct user' structure. However, it it only
+ * used for a.out file, which are not supported on new architectures.
+ */
+
+#endif	/* __ASM_GENERIC_USER_H */
-- 
1.5.6.3

-- 

[PATCH v2 7/9] asm-generic: add legacy I/O header files

[Arnd Bergmann]

[-- Attachment #1: 0007-asm-generic-add-legacy-I-O-header-files.patch --]
[-- Type: text/plain, Size: 3499 bytes --]

The dma.h, hw_irq.h, serial.h and timex.h files originally
described PC-style i8237, i8259A, i8250 and i8253 chips.
Modern architectures live happily without these specific
interfaces, but a few definitions from these headers keep
getting used in common code.

The new generic headers are what most architectures use
anyway nowadays, just implementing the minimal definitions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
---
 include/asm-generic/dma.h    |   15 +++++++++++++++
 include/asm-generic/hw_irq.h |    9 +++++++++
 include/asm-generic/serial.h |   13 +++++++++++++
 include/asm-generic/timex.h  |   29 +++++++++++++++++++++++++++++
 4 files changed, 66 insertions(+), 0 deletions(-)
 create mode 100644 include/asm-generic/dma.h
 create mode 100644 include/asm-generic/hw_irq.h
 create mode 100644 include/asm-generic/serial.h
 create mode 100644 include/asm-generic/timex.h

diff --git a/include/asm-generic/dma.h b/include/asm-generic/dma.h
new file mode 100644
index 0000000..9dfc3a7
--- /dev/null
+++ b/include/asm-generic/dma.h
@@ -0,0 +1,15 @@
+#ifndef __ASM_GENERIC_DMA_H
+#define __ASM_GENERIC_DMA_H
+/*
+ * This file traditionally describes the i8237 PC style DMA controller.
+ * Most architectures don't have these any more and can get the minimal
+ * implementation from kernel/dma.c by not defining MAX_DMA_CHANNELS.
+ *
+ * Some code relies on seeing MAX_DMA_ADDRESS though.
+ */
+#define MAX_DMA_ADDRESS PAGE_OFFSET
+
+extern int request_dma(unsigned int dmanr, const char *device_id);
+extern void free_dma(unsigned int dmanr);
+
+#endif /* __ASM_GENERIC_DMA_H */
diff --git a/include/asm-generic/hw_irq.h b/include/asm-generic/hw_irq.h
new file mode 100644
index 0000000..89036d7
--- /dev/null
+++ b/include/asm-generic/hw_irq.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_GENERIC_HW_IRQ_H
+#define __ASM_GENERIC_HW_IRQ_H
+/*
+ * hw_irq.h has internal declarations for the low-level interrupt
+ * controller, like the original i8259A.
+ * In general, this is not needed for new architectures.
+ */
+
+#endif /* __ASM_GENERIC_HW_IRQ_H */
diff --git a/include/asm-generic/serial.h b/include/asm-generic/serial.h
new file mode 100644
index 0000000..5e29109
--- /dev/null
+++ b/include/asm-generic/serial.h
@@ -0,0 +1,13 @@
+#ifndef __ASM_GENERIC_SERIAL_H
+#define __ASM_GENERIC_SERIAL_H
+
+/*
+ * This should not be an architecture specific #define, oh well.
+ *
+ * Traditionally, it just describes i8250 and related serial ports
+ * that have this clock rate.
+ */
+
+#define BASE_BAUD (1843200 / 16)
+
+#endif /* __ASM_GENERIC_SERIAL_H */
diff --git a/include/asm-generic/timex.h b/include/asm-generic/timex.h
new file mode 100644
index 0000000..8a8d4a0
--- /dev/null
+++ b/include/asm-generic/timex.h
@@ -0,0 +1,29 @@
+#ifndef __ASM_GENERIC_TIMEX_H
+#define __ASM_GENERIC_TIMEX_H
+
+/*
+ * CLOCK_TICK_RATE is highly PC-specific and should not
+ * be used in portable code. 1193182 is the value for the
+ * original i8253 PIC.
+ */
+#ifndef CLOCK_TICK_RATE
+#define CLOCK_TICK_RATE		1193182
+#endif
+
+/*
+ * If you have a cycle counter, return the value here.
+ */
+typedef unsigned long cycles_t;
+static inline cycles_t get_cycles(void)
+{
+	return 0;
+}
+
+/*
+ * Architectures are encouraged to implement read_current_timer
+ * and define this in order to avoid the expensive delay loop
+ * calibration during boot.
+ */
+#undef ARCH_HAS_READ_CURRENT_TIMER
+
+#endif /* __ASM_GENERIC_TIMEX_H */
-- 
1.5.6.3

-- 

[PATCH v2 8/9] asm-generic: add generic atomic.h and io.h

[Arnd Bergmann]

[-- Attachment #1: 0008-asm-generic-add-generic-atomic.h-and-io.h.patch --]
[-- Type: text/plain, Size: 12597 bytes --]

atomic.h and io.h are based on the mn10300 architecture,
which is already pretty generic and can be used by
other architectures that do not have hardware support
for atomic operations or out-of-order I/O access.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 include/asm-generic/atomic.h |  165 +++++++++++++++++++++++
 include/asm-generic/io.h     |  300 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 465 insertions(+), 0 deletions(-)
 create mode 100644 include/asm-generic/atomic.h
 create mode 100644 include/asm-generic/io.h

diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
new file mode 100644
index 0000000..f4bc212
--- /dev/null
+++ b/include/asm-generic/atomic.h
@@ -0,0 +1,165 @@
+/*
+ * Generic C implementation of atomic counter operations
+ * Originally implemented for MN10300.
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_ATOMIC_H
+#define __ASM_GENERIC_ATOMIC_H
+
+#ifdef CONFIG_SMP
+#error not SMP safe
+#endif
+
+/*
+ * Atomic operations that C can't guarantee us.  Useful for
+ * resource counting etc..
+ */
+
+#define ATOMIC_INIT(i)	{ (i) }
+
+#ifdef __KERNEL__
+
+/**
+ * atomic_read - read atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically reads the value of @v.  Note that the guaranteed
+ * useful range of an atomic_t is only 24 bits.
+ */
+#define atomic_read(v)	((v)->counter)
+
+/**
+ * atomic_set - set atomic variable
+ * @v: pointer of type atomic_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.  Note that the guaranteed
+ * useful range of an atomic_t is only 24 bits.
+ */
+#define atomic_set(v, i) (((v)->counter) = (i))
+
+#include <asm/system.h>
+
+/**
+ * atomic_add_return - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_t
+ *
+ * Atomically adds @i to @v and returns the result
+ * Note that the guaranteed useful range of an atomic_t is only 24 bits.
+ */
+static inline int atomic_add_return(int i, atomic_t *v)
+{
+	unsigned long flags;
+	int temp;
+
+	local_irq_save(flags);
+	temp = v->counter;
+	temp += i;
+	v->counter = temp;
+	local_irq_restore(flags);
+
+	return temp;
+}
+
+/**
+ * atomic_sub_return - subtract integer from atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v and returns the result
+ * Note that the guaranteed useful range of an atomic_t is only 24 bits.
+ */
+static inline int atomic_sub_return(int i, atomic_t *v)
+{
+	unsigned long flags;
+	int temp;
+
+	local_irq_save(flags);
+	temp = v->counter;
+	temp -= i;
+	v->counter = temp;
+	local_irq_restore(flags);
+
+	return temp;
+}
+
+static inline int atomic_add_negative(int i, atomic_t *v)
+{
+	return atomic_add_return(i, v) < 0;
+}
+
+static inline void atomic_add(int i, atomic_t *v)
+{
+	atomic_add_return(i, v);
+}
+
+static inline void atomic_sub(int i, atomic_t *v)
+{
+	atomic_sub_return(i, v);
+}
+
+static inline void atomic_inc(atomic_t *v)
+{
+	atomic_add_return(1, v);
+}
+
+static inline void atomic_dec(atomic_t *v)
+{
+	atomic_sub_return(1, v);
+}
+
+#define atomic_dec_return(v)		atomic_sub_return(1, (v))
+#define atomic_inc_return(v)		atomic_add_return(1, (v))
+
+#define atomic_sub_and_test(i, v)	(atomic_sub_return((i), (v)) == 0)
+#define atomic_dec_and_test(v)		(atomic_sub_return(1, (v)) == 0)
+#define atomic_inc_and_test(v)		(atomic_add_return(1, (v)) == 0)
+
+#define atomic_add_unless(v, a, u)				\
+({								\
+	int c, old;						\
+	c = atomic_read(v);					\
+	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+		c = old;					\
+	c != (u);						\
+})
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
+static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+{
+	unsigned long flags;
+
+	mask = ~mask;
+	local_irq_save(flags);
+	*addr &= mask;
+	local_irq_restore(flags);
+}
+
+#define atomic_xchg(ptr, v)		(xchg(&(ptr)->counter, (v)))
+#define atomic_cmpxchg(v, old, new)	(cmpxchg(&((v)->counter), (old), (new)))
+
+#define cmpxchg_local(ptr, o, n)				  	       \
+	((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+			(unsigned long)(n), sizeof(*(ptr))))
+
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+/* Atomic operations are already serializing on MN10300??? */
+#define smp_mb__before_atomic_dec()	barrier()
+#define smp_mb__after_atomic_dec()	barrier()
+#define smp_mb__before_atomic_inc()	barrier()
+#define smp_mb__after_atomic_inc()	barrier()
+
+#include <asm-generic/atomic-long.h>
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_GENERIC_ATOMIC_H */
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
new file mode 100644
index 0000000..5ae45e5
--- /dev/null
+++ b/include/asm-generic/io.h
@@ -0,0 +1,300 @@
+/* Generic I/O port emulation, based on MN10300 code
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_IO_H
+#define __ASM_GENERIC_IO_H
+
+#include <asm/page.h> /* I/O is all done through memory accesses */
+#include <asm/cacheflush.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_GENERIC_IOMAP
+#include <asm-generic/iomap.h>
+#endif
+
+#define mmiowb() do {} while (0)
+
+/*****************************************************************************/
+/*
+ * readX/writeX() are used to access memory mapped devices. On some
+ * architectures the memory mapped IO stuff needs to be accessed
+ * differently. On the simple architectures, we just read/write the
+ * memory location directly.
+ */
+static inline u8 __raw_readb(const volatile void __iomem *addr)
+{
+	return *(const volatile u8 __force *) addr;
+}
+
+static inline u16 __raw_readw(const volatile void __iomem *addr)
+{
+	return *(const volatile u16 __force *) addr;
+}
+
+static inline u32 __raw_readl(const volatile void __iomem *addr)
+{
+	return *(const volatile u32 __force *) addr;
+}
+
+#define readb __raw_readb
+#define readw(addr) __le16_to_cpu(__raw_readw(addr))
+#define readl(addr) __le32_to_cpu(__raw_readl(addr))
+
+static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
+{
+	*(volatile u8 __force *) addr = b;
+}
+
+static inline void __raw_writew(u16 b, volatile void __iomem *addr)
+{
+	*(volatile u16 __force *) addr = b;
+}
+
+static inline void __raw_writel(u32 b, volatile void __iomem *addr)
+{
+	*(volatile u32 __force *) addr = b;
+}
+
+#define writeb __raw_writeb
+#define writew(b,addr) __raw_writew(__cpu_to_le16(b),addr)
+#define writel(b,addr) __raw_writel(__cpu_to_le32(b),addr)
+
+#ifdef CONFIG_64BIT
+static inline u64 __raw_readq(const volatile void __iomem *addr)
+{
+	return *(const volatile u64 __force *) addr;
+}
+#define readq(addr) __le64_to_cpu(__raw_readq(addr))
+
+static inline void __raw_writeq(u64 b, volatile void __iomem *addr)
+{
+	*(volatile u64 __force *) addr = b;
+}
+#define writeq(b,addr) __raw_writeq(__cpu_to_le64(b),addr)
+#endif
+
+/*****************************************************************************/
+/*
+ * traditional input/output functions
+ */
+
+static inline u8 inb(unsigned long addr)
+{
+	return readb((volatile void __iomem *) addr);
+}
+
+static inline u16 inw(unsigned long addr)
+{
+	return readw((volatile void __iomem *) addr);
+}
+
+static inline u32 inl(unsigned long addr)
+{
+	return readl((volatile void __iomem *) addr);
+}
+
+static inline void outb(u8 b, unsigned long addr)
+{
+	writeb(b, (volatile void __iomem *) addr);
+}
+
+static inline void outw(u16 b, unsigned long addr)
+{
+	writew(b, (volatile void __iomem *) addr);
+}
+
+static inline void outl(u32 b, unsigned long addr)
+{
+	writel(b, (volatile void __iomem *) addr);
+}
+
+#define inb_p(addr)	inb(addr)
+#define inw_p(addr)	inw(addr)
+#define inl_p(addr)	inl(addr)
+#define outb_p(x, addr)	outb((x), (addr))
+#define outw_p(x, addr)	outw((x), (addr))
+#define outl_p(x, addr)	outl((x), (addr))
+
+static inline void insb(unsigned long addr, void *buffer, int count)
+{
+	if (count) {
+		u8 *buf = buffer;
+		do {
+			u8 x = inb(addr);
+			*buf++ = x;
+		} while (--count);
+	}
+}
+
+static inline void insw(unsigned long addr, void *buffer, int count)
+{
+	if (count) {
+		u16 *buf = buffer;
+		do {
+			u16 x = inw(addr);
+			*buf++ = x;
+		} while (--count);
+	}
+}
+
+static inline void insl(unsigned long addr, void *buffer, int count)
+{
+	if (count) {
+		u32 *buf = buffer;
+		do {
+			u32 x = inl(addr);
+			*buf++ = x;
+		} while (--count);
+	}
+}
+
+static inline void outsb(unsigned long addr, const void *buffer, int count)
+{
+	if (count) {
+		const u8 *buf = buffer;
+		do {
+			outb(*buf++, addr);
+		} while (--count);
+	}
+}
+
+static inline void outsw(unsigned long addr, const void *buffer, int count)
+{
+	if (count) {
+		const u16 *buf = buffer;
+		do {
+			outw(*buf++, addr);
+		} while (--count);
+	}
+}
+
+static inline void outsl(unsigned long addr, const void *buffer, int count)
+{
+	if (count) {
+		const u32 *buf = buffer;
+		do {
+			outl(*buf++, addr);
+		} while (--count);
+	}
+}
+
+#ifndef CONFIG_GENERIC_IOMAP
+#define ioread8(addr)		readb(addr)
+#define ioread16(addr)		readw(addr)
+#define ioread32(addr)		readl(addr)
+
+#define iowrite8(v, addr)	writeb((v), (addr))
+#define iowrite16(v, addr)	writew((v), (addr))
+#define iowrite32(v, addr)	writel((v), (addr))
+
+#define ioread8_rep(p, dst, count) \
+	insb((unsigned long) (p), (dst), (count))
+#define ioread16_rep(p, dst, count) \
+	insw((unsigned long) (p), (dst), (count))
+#define ioread32_rep(p, dst, count) \
+	insl((unsigned long) (p), (dst), (count))
+
+#define iowrite8_rep(p, src, count) \
+	outsb((unsigned long) (p), (src), (count))
+#define iowrite16_rep(p, src, count) \
+	outsw((unsigned long) (p), (src), (count))
+#define iowrite32_rep(p, src, count) \
+	outsl((unsigned long) (p), (src), (count))
+#endif /* CONFIG_GENERIC_IOMAP */
+
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#ifdef __KERNEL__
+
+#include <linux/vmalloc.h>
+#define __io_virt(x) ((void *) (x))
+
+#ifndef CONFIG_GENERIC_IOMAP
+/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+struct pci_dev;
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
+{
+}
+#endif /* CONFIG_GENERIC_IOMAP */
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ * These are pretty trivial
+ */
+static inline unsigned long virt_to_phys(volatile void *address)
+{
+	return __pa((unsigned long)address);
+}
+
+static inline void *phys_to_virt(unsigned long address)
+{
+	return __va(address);
+}
+
+/*
+ * Change "struct page" to physical address.
+ */
+static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
+{
+	return (void *) offset;
+}
+
+#define __ioremap(offset, size, flags)	ioremap(offset, size)
+
+#ifndef ioremap_nocache
+#define ioremap_nocache ioremap
+#endif
+
+#ifndef ioremap_wc
+#define ioremap_wc ioremap_nocache
+#endif
+
+static inline void iounmap(void *addr)
+{
+}
+
+#ifndef CONFIG_GENERIC_IOMAP
+static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+	return (void __iomem *) port;
+}
+
+static inline void ioport_unmap(void __iomem *p)
+{
+}
+#else /* CONFIG_GENERIC_IOMAP */
+extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
+extern void ioport_unmap(void __iomem *p);
+#endif /* CONFIG_GENERIC_IOMAP */
+
+#define xlate_dev_kmem_ptr(p)	p
+#define xlate_dev_mem_ptr(p)	((void *) (p))
+
+#ifndef virt_to_bus
+static inline unsigned long virt_to_bus(volatile void *address)
+{
+	return ((unsigned long) address);
+}
+
+static inline void *bus_to_virt(unsigned long address)
+{
+	return (void *) address;
+}
+#endif
+
+#define memset_io(a, b, c)	memset(__io_virt(a), (b), (c))
+#define memcpy_fromio(a, b, c)	memcpy((a), __io_virt(b), (c))
+#define memcpy_toio(a, b, c)	memcpy(__io_virt(a), (b), (c))
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_GENERIC_IO_H */
-- 
1.5.6.3

-- 

[PATCH v2 9/9] asm-generic: add generic NOMMU versions of some headers

[Arnd Bergmann]

[-- Attachment #1: 0009-asm-generic-add-generic-NOMMU-versions-of-some-head.patch --]
[-- Type: text/plain, Size: 14976 bytes --]

Memory management in generic is highly architecture specific,
but on NOMMU architectures, it is mostly trivial, so just
add a default implementation in asm-generic that applies
to all NOMMU architectures.

The two files cache.h and cacheflush.h can possibly also
be used by architectures that have an MMU but never require
flushing the cache or have cache lines larger than 32 bytes.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 include/asm-generic/cache.h       |   12 ++
 include/asm-generic/cacheflush.h  |   30 +++++
 include/asm-generic/mmu.h         |   14 +++
 include/asm-generic/mmu_context.h |   45 +++++++
 include/asm-generic/page.h        |   99 ++++++++++++++++
 include/asm-generic/pgalloc.h     |   12 ++
 include/asm-generic/segment.h     |    9 ++
 include/asm-generic/tlbflush.h    |   18 +++
 include/asm-generic/uaccess.h     |  235 +++++++++++++++++++++++++++++++++++++
 9 files changed, 474 insertions(+), 0 deletions(-)
 create mode 100644 include/asm-generic/cache.h
 create mode 100644 include/asm-generic/cacheflush.h
 create mode 100644 include/asm-generic/mmu.h
 create mode 100644 include/asm-generic/mmu_context.h
 create mode 100644 include/asm-generic/page.h
 create mode 100644 include/asm-generic/pgalloc.h
 create mode 100644 include/asm-generic/segment.h
 create mode 100644 include/asm-generic/tlbflush.h
 create mode 100644 include/asm-generic/uaccess.h

diff --git a/include/asm-generic/cache.h b/include/asm-generic/cache.h
new file mode 100644
index 0000000..1bfcfe5
--- /dev/null
+++ b/include/asm-generic/cache.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_GENERIC_CACHE_H
+#define __ASM_GENERIC_CACHE_H
+/*
+ * 32 bytes appears to be the most common cache line size,
+ * so make that the default here. Architectures with larger
+ * cache lines need to provide their own cache.h.
+ */
+
+#define L1_CACHE_SHIFT		5
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+
+#endif /* __ASM_GENERIC_CACHE_H */
diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h
new file mode 100644
index 0000000..ba4ec39
--- /dev/null
+++ b/include/asm-generic/cacheflush.h
@@ -0,0 +1,30 @@
+#ifndef __ASM_CACHEFLUSH_H
+#define __ASM_CACHEFLUSH_H
+
+/* Keep includes the same across arches.  */
+#include <linux/mm.h>
+
+/*
+ * The cache doesn't need to be flushed when TLB entries change when
+ * the cache is mapped to physical memory, not virtual memory
+ */
+#define flush_cache_all()			do { } while (0)
+#define flush_cache_mm(mm)			do { } while (0)
+#define flush_cache_dup_mm(mm)			do { } while (0)
+#define flush_cache_range(vma, start, end)	do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
+#define flush_dcache_page(page)			do { } while (0)
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+#define flush_icache_range(start, end)		do { } while (0)
+#define flush_icache_page(vma,pg)		do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
+#define flush_cache_vmap(start, end)		do { } while (0)
+#define flush_cache_vunmap(start, end)		do { } while (0)
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+
+#endif /* __ASM_CACHEFLUSH_H */
diff --git a/include/asm-generic/mmu.h b/include/asm-generic/mmu.h
new file mode 100644
index 0000000..eb34fb0
--- /dev/null
+++ b/include/asm-generic/mmu.h
@@ -0,0 +1,14 @@
+#ifndef __ASM_GENERIC_MMU_H
+#define __ASM_GENERIC_MMU_H
+
+/*
+ * This is the mmu.h header for nommu implementations.
+ * Architectures with an MMU need something more complex.
+ */
+
+typedef struct {
+	struct vm_list_struct	*vmlist;
+	unsigned long		end_brk;
+} mm_context_t;
+
+#endif /* __ASM_GENERIC_MMU_H */
diff --git a/include/asm-generic/mmu_context.h b/include/asm-generic/mmu_context.h
new file mode 100644
index 0000000..a7eec91
--- /dev/null
+++ b/include/asm-generic/mmu_context.h
@@ -0,0 +1,45 @@
+#ifndef __ASM_GENERIC_MMU_CONTEXT_H
+#define __ASM_GENERIC_MMU_CONTEXT_H
+
+/*
+ * Generic hooks for NOMMU architectures, which do not need to do
+ * anything special here.
+ */
+
+#include <asm-generic/mm_hooks.h>
+
+struct task_struct;
+struct mm_struct;
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+			struct task_struct *tsk)
+{
+}
+
+static inline int init_new_context(struct task_struct *tsk,
+			struct mm_struct *mm)
+{
+	return 0;
+}
+
+static inline void destroy_context(struct mm_struct *mm)
+{
+}
+
+static inline void deactivate_mm(struct task_struct *task,
+			struct mm_struct *mm)
+{
+}
+
+static inline void switch_mm(struct mm_struct *prev,
+			struct mm_struct *next,
+			struct task_struct *tsk)
+{
+}
+
+static inline void activate_mm(struct mm_struct *prev_mm,
+			       struct mm_struct *next_mm)
+{
+}
+
+#endif /* __ASM_GENERIC_MMU_CONTEXT_H */
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
new file mode 100644
index 0000000..75fec18
--- /dev/null
+++ b/include/asm-generic/page.h
@@ -0,0 +1,99 @@
+#ifndef __ASM_GENERIC_PAGE_H
+#define __ASM_GENERIC_PAGE_H
+/*
+ * Generic page.h implementation, for NOMMU architectures.
+ * This provides the dummy definitions for the memory management.
+ */
+
+#ifdef CONFIG_MMU
+#error need to prove a real asm/page.h
+#endif
+
+
+/* PAGE_SHIFT determines the page size */
+
+#define PAGE_SHIFT	12
+#ifdef __ASSEMBLY__
+#define PAGE_SIZE	(1 << PAGE_SHIFT)
+#else
+#define PAGE_SIZE	(1UL << PAGE_SHIFT)
+#endif
+#define PAGE_MASK	(~(PAGE_SIZE-1))
+
+#include <asm/setup.h>
+
+#ifndef __ASSEMBLY__
+
+#define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
+#define free_user_page(page, addr)	free_page(addr)
+
+#define clear_page(page)	memset((page), 0, PAGE_SIZE)
+#define copy_page(to,from)	memcpy((to), (from), PAGE_SIZE)
+
+#define clear_user_page(page, vaddr, pg)	clear_page(page)
+#define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct {
+	unsigned long pte;
+} pte_t;
+typedef struct {
+	unsigned long pmd[16];
+} pmd_t;
+typedef struct {
+	unsigned long pgd;
+} pgd_t;
+typedef struct {
+	unsigned long pgprot;
+} pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)	((x).pte)
+#define pmd_val(x)	((&x)->pmd[0])
+#define pgd_val(x)	((x).pgd)
+#define pgprot_val(x)	((x).pgprot)
+
+#define __pte(x)	((pte_t) { (x) } )
+#define __pmd(x)	((pmd_t) { (x) } )
+#define __pgd(x)	((pgd_t) { (x) } )
+#define __pgprot(x)	((pgprot_t) { (x) } )
+
+extern unsigned long memory_start;
+extern unsigned long memory_end;
+
+#endif /* !__ASSEMBLY__ */
+
+#ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
+#define PAGE_OFFSET		(CONFIG_KERNEL_RAM_BASE_ADDRESS)
+#else
+#define PAGE_OFFSET		(0)
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
+#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
+
+#define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)
+
+#define virt_to_page(addr)	(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
+#define page_to_virt(page)	((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
+
+#ifndef page_to_phys
+#define page_to_phys(page)      ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
+#endif
+
+#define pfn_valid(pfn)		((pfn) < max_mapnr)
+
+#define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
+				((void *)(kaddr) < (void *)memory_end))
+
+#endif /* __ASSEMBLY__ */
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/getorder.h>
+
+#endif /* __ASM_GENERIC_PAGE_H */
diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h
new file mode 100644
index 0000000..9e429d0
--- /dev/null
+++ b/include/asm-generic/pgalloc.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_GENERIC_PGALLOC_H
+#define __ASM_GENERIC_PGALLOC_H
+/*
+ * an empty file is enough for a nommu architecture
+ */
+#ifdef CONFIG_MMU
+#error need to implement an architecture specific asm/pgalloc.h
+#endif
+
+#define check_pgt_cache()          do { } while (0)
+
+#endif /* __ASM_GENERIC_PGALLOC_H */
diff --git a/include/asm-generic/segment.h b/include/asm-generic/segment.h
new file mode 100644
index 0000000..5580eac
--- /dev/null
+++ b/include/asm-generic/segment.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_GENERIC_SEGMENT_H
+#define __ASM_GENERIC_SEGMENT_H
+/*
+ * Only here because we have some old header files that expect it...
+ *
+ * New architectures probably don't want to have their own version.
+ */
+
+#endif /* __ASM_GENERIC_SEGMENT_H */
diff --git a/include/asm-generic/tlbflush.h b/include/asm-generic/tlbflush.h
new file mode 100644
index 0000000..c7af037
--- /dev/null
+++ b/include/asm-generic/tlbflush.h
@@ -0,0 +1,18 @@
+#ifndef __ASM_GENERIC_TLBFLUSH_H
+#define __ASM_GENERIC_TLBFLUSH_H
+/*
+ * This is a dummy tlbflush implementation that can be used on all
+ * nommu architectures.
+ * If you have an MMU, you need to write your own functions.
+ */
+#ifdef CONFIG_MMU
+#error need to implement an architecture specific asm/tlbflush.h
+#endif
+
+static inline void flush_tlb_mm(struct mm_struct *mm)
+{
+	BUG();
+}
+
+
+#endif /* __ASM_GENERIC_TLBFLUSH_H */
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
new file mode 100644
index 0000000..e05f6a9
--- /dev/null
+++ b/include/asm-generic/uaccess.h
@@ -0,0 +1,235 @@
+#ifndef __ASM_GENERIC_UACCESS_H
+#define __ASM_GENERIC_UACCESS_H
+
+/*
+ * User space memory access functions, these should work
+ * on a ny machine that has kernel and user data in the same
+ * address space, e.g. all NOMMU machines.
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+
+#include <asm/segment.h>
+
+#ifndef get_fs
+#define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
+#define KERNEL_DS	MAKE_MM_SEG(~0UL)
+#define USER_DS		MAKE_MM_SEG(TASK_SIZE - 1)
+
+#define get_ds() (KERNEL_DS)
+#define get_fs() (current_thread_info()->addr_limit)
+
+static inline void set_fs(mm_segment_t fs)
+{
+	current_thread_info()->addr_limit = fs;
+}
+#endif
+
+#define segment_eq(a, b) ((a).seg == (b).seg)
+
+#define VERIFY_READ	0
+#define VERIFY_WRITE	1
+
+#define access_ok(type, addr, size) __access_ok((unsigned long)(addr),(size))
+
+/*
+ * The architecture should really override this if possible, at least
+ * doing a check on the get_fs()
+ */
+#ifndef __access_ok
+static inline int __access_ok(unsigned long addr, unsigned long size)
+{
+	return 1;
+}
+#endif
+
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue.  No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path.  This means when everything is well,
+ * we don't even have to jump over them.  Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+
+struct exception_table_entry
+{
+	unsigned long insn, fixup;
+};
+
+/* Returns 0 if exception not found and fixup otherwise.  */
+extern unsigned long search_exception_table(unsigned long);
+
+/*
+ * These are the main single-value transfer routines.  They automatically
+ * use the right size if we just have the right pointer type.
+ */
+#ifndef __put_user
+#define __put_user(x, ptr)				\
+({							\
+	int __pu_err = 0;				\
+	typeof(*(ptr)) __pu_val = (x);			\
+	switch (sizeof (*(ptr))) {			\
+	case 1:						\
+	case 2:						\
+	case 4:						\
+		*(ptr) = (__pu_val);			\
+		break;					\
+	case 8:						\
+		memcpy(ptr, &__pu_val, sizeof (*(ptr)));\
+		break;					\
+	default:					\
+		__pu_err = __put_user_bad();		\
+		break;					\
+	}						\
+	__pu_err;					\
+})
+extern int __put_user_bad(void);
+#endif
+
+#define put_user(x, ptr) (				\
+	__access_ok(ptr, sizeof (*ptr)) ?		\
+		__put_user(x, ptr) :			\
+		-EFAULT)
+
+#ifndef __get_user
+#define __get_user(x, ptr)				\
+({							\
+	int __gu_err = 0;				\
+	unsigned long __gu_val = (unsigned long)*ptr;	\
+	switch (sizeof(*(ptr))) {			\
+	case 1:						\
+	case 2:						\
+	case 4:						\
+	case 8:						\
+		break;					\
+	default:					\
+		__gu_err = __get_user_bad();		\
+		__gu_val = 0;				\
+		break;					\
+	}						\
+	(x) = (typeof(*ptr))__gu_val;			\
+	__gu_err;					\
+})
+extern int __get_user_bad(void);
+#endif
+
+#define get_user(x, ptr) (				\
+	__access_ok(ptr, sizeof (*ptr)) ?		\
+		__get_user(x, ptr) :			\
+		-EFAULT)
+
+#ifndef __copy_from_user
+static inline __must_check long __copy_from_user(void *to,
+		const void __user *from, unsigned long n)
+{
+	memcpy(to, (const void __force *)from, n);
+	return 0;
+}
+#endif
+
+#ifndef __copy_to_user
+static inline __must_check long __copy_to_user(void __user *to,
+		const void *from, unsigned long n)
+{
+	memcpy((void __force *)to, from, n);
+	return 0;
+}
+#endif
+
+#ifndef __copy_from_user_inatomic
+#define __copy_from_user_inatomic __copy_from_user
+#endif
+
+#ifndef __copy_to_user_inatomic
+#define __copy_to_user_inatomic __copy_to_user
+#endif
+
+static inline long copy_from_user(void *to,
+		const void __user * from, unsigned long n)
+{
+	might_sleep();
+	if (__access_ok(from, n))
+		return __copy_from_user(to, from, n);
+	else
+		return n;
+}
+
+static inline long copy_to_user(void __user *to,
+		const void *from, unsigned long n)
+{
+	might_sleep();
+	if (__access_ok(to, n))
+		return __copy_to_user(to, from, n);
+	else
+		return n;
+}
+
+/*
+ * Copy a null terminated string from userspace.
+ */
+#ifndef __strncpy_from_user
+static inline long
+__strncpy_from_user(char *dst, const char __user *src, long count)
+{
+	char *tmp;
+	strncpy(dst, src, count);
+	for (tmp = dst; *tmp && count > 0; tmp++, count--)
+		;
+	return (tmp - dst);
+}
+#endif
+
+static inline long
+strncpy_from_user(char *dst, const char __user *src, long count)
+{
+	if (!__access_ok(src, 1))
+		return -EFAULT;
+	return __strncpy_from_user(dst, src, count);
+}
+
+/*
+ * Return the size of a string (including the ending 0)
+ *
+ * Return 0 on exception, a value greater than N if too long
+ */
+#ifndef strnlen_user
+static inline long strnlen_user(const char __user *src, long n)
+{
+	return strlen((void * __force)src) + 1;
+}
+#endif
+
+static inline long strlen_user(const char __user *src)
+{
+	return strnlen_user(src, 32767);
+}
+
+/*
+ * Zero Userspace
+ */
+#ifndef __clear_user
+static inline __must_check unsigned long
+__clear_user(void __user *to, unsigned long n)
+{
+	memset((void __force *)to, 0, n);
+	return 0;
+}
+#endif
+
+static inline __must_check unsigned long
+clear_user(void __user *to, unsigned long n)
+{
+	might_sleep();
+	if (!__access_ok(to, n))
+		return n;
+
+	return __clear_user(to, n);
+}
+
+#endif /* __ASM_GENERIC_UACCESS_H */
-- 
1.5.6.3

--