diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/atomic.h | 59 | ||||
| -rw-r--r-- | include/asm-generic/bitops/ext2-atomic-setbit.h | 11 | ||||
| -rw-r--r-- | include/asm-generic/bitops/ext2-atomic.h | 4 | ||||
| -rw-r--r-- | include/asm-generic/local.h | 2 | ||||
| -rw-r--r-- | include/asm-generic/local64.h | 2 | ||||
| -rw-r--r-- | include/asm-generic/memory_model.h | 4 | ||||
| -rw-r--r-- | include/asm-generic/pci-bridge.h | 62 | ||||
| -rw-r--r-- | include/asm-generic/unistd.h | 2 |
8 files changed, 129 insertions, 17 deletions
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index e994197f84b7..e37963c1df4d 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -1,5 +1,7 @@ /* - * Generic C implementation of atomic counter operations + * Generic C implementation of atomic counter operations. Usable on + * UP systems only. Do not include in machine independent code. + * * Originally implemented for MN10300. * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. @@ -14,7 +16,11 @@ #define __ASM_GENERIC_ATOMIC_H #ifdef CONFIG_SMP -#error not SMP safe +/* Force people to define core atomics */ +# if !defined(atomic_add_return) || !defined(atomic_sub_return) || \ + !defined(atomic_clear_mask) || !defined(atomic_set_mask) +# error "SMP requires a little arch-specific magic" +# endif #endif /* @@ -32,7 +38,9 @@ * * Atomically reads the value of @v. */ +#ifndef atomic_read #define atomic_read(v) (*(volatile int *)&(v)->counter) +#endif /** * atomic_set - set atomic variable @@ -53,6 +61,7 @@ * * Atomically adds @i to @v and returns the result */ +#ifndef atomic_add_return static inline int atomic_add_return(int i, atomic_t *v) { unsigned long flags; @@ -66,6 +75,7 @@ static inline int atomic_add_return(int i, atomic_t *v) return temp; } +#endif /** * atomic_sub_return - subtract integer from atomic variable @@ -74,6 +84,7 @@ static inline int atomic_add_return(int i, atomic_t *v) * * Atomically subtracts @i from @v and returns the result */ +#ifndef atomic_sub_return static inline int atomic_sub_return(int i, atomic_t *v) { unsigned long flags; @@ -87,6 +98,7 @@ static inline int atomic_sub_return(int i, atomic_t *v) return temp; } +#endif static inline int atomic_add_negative(int i, atomic_t *v) { @@ -117,8 +129,8 @@ static inline void atomic_dec(atomic_t *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_dec_and_test(v) (atomic_dec_return(v) == 0) +#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) #define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v))) #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) @@ -129,26 +141,51 @@ static inline void atomic_dec(atomic_t *v) #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) -static inline int atomic_add_unless(atomic_t *v, int a, int u) +static inline int __atomic_add_unless(atomic_t *v, int a, int u) { int c, old; c = atomic_read(v); while (c != u && (old = atomic_cmpxchg(v, c, c + a)) != c) c = old; - return c != u; + return c; } -#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) - -static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) +/** + * atomic_clear_mask - Atomically clear bits in atomic variable + * @mask: Mask of the bits to be cleared + * @v: pointer of type atomic_t + * + * Atomically clears the bits set in @mask from @v + */ +#ifndef atomic_clear_mask +static inline void atomic_clear_mask(unsigned long mask, atomic_t *v) { unsigned long flags; mask = ~mask; raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */ - *addr &= mask; + v->counter &= mask; raw_local_irq_restore(flags); } +#endif + +/** + * atomic_set_mask - Atomically set bits in atomic variable + * @mask: Mask of the bits to be set + * @v: pointer of type atomic_t + * + * Atomically sets the bits set in @mask in @v + */ +#ifndef atomic_set_mask +static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +{ + unsigned long flags; + + raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */ + v->counter |= mask; + raw_local_irq_restore(flags); +} +#endif /* Assume that atomic operations are already serializing */ #define smp_mb__before_atomic_dec() barrier() @@ -156,7 +193,5 @@ 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-long.h> - #endif /* __KERNEL__ */ #endif /* __ASM_GENERIC_ATOMIC_H */ diff --git a/include/asm-generic/bitops/ext2-atomic-setbit.h b/include/asm-generic/bitops/ext2-atomic-setbit.h new file mode 100644 index 000000000000..5a0997857b34 --- /dev/null +++ b/include/asm-generic/bitops/ext2-atomic-setbit.h @@ -0,0 +1,11 @@ +#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_ +#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_ + +/* + * Atomic bitops based version of ext2 atomic bitops + */ + +#define ext2_set_bit_atomic(l, nr, addr) test_and_set_bit_le(nr, addr) +#define ext2_clear_bit_atomic(l, nr, addr) test_and_clear_bit_le(nr, addr) + +#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_ */ diff --git a/include/asm-generic/bitops/ext2-atomic.h b/include/asm-generic/bitops/ext2-atomic.h index ecf1c9d8a7cc..87f0f109d7f1 100644 --- a/include/asm-generic/bitops/ext2-atomic.h +++ b/include/asm-generic/bitops/ext2-atomic.h @@ -1,6 +1,10 @@ #ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ #define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ +/* + * Spinlock based version of ext2 atomic bitops + */ + #define ext2_set_bit_atomic(lock, nr, addr) \ ({ \ int ret; \ diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h index c8a5d68541d7..9ceb03b4f466 100644 --- a/include/asm-generic/local.h +++ b/include/asm-generic/local.h @@ -2,7 +2,7 @@ #define _ASM_GENERIC_LOCAL_H #include <linux/percpu.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/types.h> /* diff --git a/include/asm-generic/local64.h b/include/asm-generic/local64.h index 02ac760c1a8b..5980002b8b7b 100644 --- a/include/asm-generic/local64.h +++ b/include/asm-generic/local64.h @@ -55,7 +55,7 @@ typedef struct { #else /* BITS_PER_LONG != 64 */ -#include <asm/atomic.h> +#include <linux/atomic.h> /* Don't use typedef: don't want them to be mixed with atomic_t's. */ typedef struct { diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index fb2d63f13f4c..aea9e45efce6 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -39,7 +39,7 @@ }) #define __page_to_pfn(pg) \ -({ struct page *__pg = (pg); \ +({ const struct page *__pg = (pg); \ struct pglist_data *__pgdat = NODE_DATA(page_to_nid(__pg)); \ (unsigned long)(__pg - __pgdat->node_mem_map) + \ __pgdat->node_start_pfn; \ @@ -57,7 +57,7 @@ * section[i].section_mem_map == mem_map's address - start_pfn; */ #define __page_to_pfn(pg) \ -({ struct page *__pg = (pg); \ +({ const struct page *__pg = (pg); \ int __sec = page_to_section(__pg); \ (unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec))); \ }) diff --git a/include/asm-generic/pci-bridge.h b/include/asm-generic/pci-bridge.h new file mode 100644 index 000000000000..4a5aca2a2c94 --- /dev/null +++ b/include/asm-generic/pci-bridge.h @@ -0,0 +1,62 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#ifndef _ASM_GENERIC_PCI_BRIDGE_H +#define _ASM_GENERIC_PCI_BRIDGE_H + +#ifdef __KERNEL__ + +enum { + /* Force re-assigning all resources (ignore firmware + * setup completely) + */ + PCI_REASSIGN_ALL_RSRC = 0x00000001, + + /* Re-assign all bus numbers */ + PCI_REASSIGN_ALL_BUS = 0x00000002, + + /* Do not try to assign, just use existing setup */ + PCI_PROBE_ONLY = 0x00000004, + + /* Don't bother with ISA alignment unless the bridge has + * ISA forwarding enabled + */ + PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, + + /* Enable domain numbers in /proc */ + PCI_ENABLE_PROC_DOMAINS = 0x00000010, + /* ... except for domain 0 */ + PCI_COMPAT_DOMAIN_0 = 0x00000020, +}; + +#ifdef CONFIG_PCI +extern unsigned int pci_flags; + +static inline void pci_set_flags(int flags) +{ + pci_flags = flags; +} + +static inline void pci_add_flags(int flags) +{ + pci_flags |= flags; +} + +static inline int pci_has_flag(int flag) +{ + return pci_flags & flag; +} +#else +static inline void pci_set_flags(int flags) { } +static inline void pci_add_flags(int flags) { } +static inline int pci_has_flag(int flag) +{ + return 0; +} +#endif /* CONFIG_PCI */ + +#endif /* __KERNEL__ */ +#endif /* _ASM_GENERIC_PCI_BRIDGE_H */ diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index 4f76959397fa..f4c38d8c6674 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -143,7 +143,7 @@ __SYSCALL(__NR_pivot_root, sys_pivot_root) /* fs/nfsctl.c */ #define __NR_nfsservctl 42 -__SC_COMP(__NR_nfsservctl, sys_nfsservctl, compat_sys_nfsservctl) +__SYSCALL(__NR_nfsservctl, sys_ni_syscall) /* fs/open.c */ #define __NR3264_statfs 43 |