diff options
| author | Hans Petter Selasky <hselasky@FreeBSD.org> | 2018-08-01 19:10:46 +0000 |
|---|---|---|
| committer | Hans Petter Selasky <hselasky@FreeBSD.org> | 2018-08-01 19:10:46 +0000 |
| commit | a76c73aadcae833c47b8febcd6a7038b3cfd2a3b (patch) | |
| tree | 7613d5424f51f381b0c76ce2c2a435d41bce6ada /sys/compat/linuxkpi/common/include/asm | |
| parent | 61b285ac573e913b394e552477bd98981d80ddd2 (diff) | |
Don't refer to non-existing atomic functions, even though not compiled,
in the LinuxKPI.
Found by: rpolka @
MFC after: 1 week
Sponsored by: Mellanox Technologies
Notes
Notes:
svn path=/head/; revision=337056
Diffstat (limited to 'sys/compat/linuxkpi/common/include/asm')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/asm/atomic.h | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/sys/compat/linuxkpi/common/include/asm/atomic.h b/sys/compat/linuxkpi/common/include/asm/atomic.h index 22cfada3ee9e..5f6659d6c3a1 100644 --- a/sys/compat/linuxkpi/common/include/asm/atomic.h +++ b/sys/compat/linuxkpi/common/include/asm/atomic.h @@ -2,7 +2,7 @@ * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. - * Copyright (c) 2013-2017 Mellanox Technologies, Ltd. + * Copyright (c) 2013-2018 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -159,6 +159,21 @@ atomic_cmpxchg(atomic_t *v, int old, int new) return (ret); } +#if defined(__i386__) || defined(__amd64__) +#define LINUXKPI_ATOMIC_8(...) __VA_ARGS__ +#define LINUXKPI_ATOMIC_16(...) __VA_ARGS__ +#else +#define LINUXKPI_ATOMIC_8(...) +#define LINUXKPI_ATOMIC_16(...) +#endif + +#if defined(__amd64__) || (defined(__ARM_ARCH) && (__ARM_ARCH >= 6)) || \ + defined(__aarch64__) || defined(__powerpc64__) || defined(__riscv) +#define LINUXKPI_ATOMIC_64(...) __VA_ARGS__ +#else +#define LINUXKPI_ATOMIC_64(...) +#endif + #define cmpxchg(ptr, old, new) ({ \ union { \ __typeof(*(ptr)) val; \ @@ -168,30 +183,39 @@ atomic_cmpxchg(atomic_t *v, int old, int new) u64 u64[0]; \ } __ret = { .val = (old) }, __new = { .val = (new) }; \ \ - CTASSERT(sizeof(__ret.val) == 1 || sizeof(__ret.val) == 2 || \ - sizeof(__ret.val) == 4 || sizeof(__ret.val) == 8); \ + CTASSERT( \ + LINUXKPI_ATOMIC_8(sizeof(__ret.val) == 1 ||) \ + LINUXKPI_ATOMIC_16(sizeof(__ret.val) == 2 ||) \ + LINUXKPI_ATOMIC_64(sizeof(__ret.val) == 8 ||) \ + sizeof(__ret.val) == 4); \ \ switch (sizeof(__ret.val)) { \ + LINUXKPI_ATOMIC_8( \ case 1: \ while (!atomic_fcmpset_8((volatile u8 *)(ptr), \ __ret.u8, __new.u8[0]) && __ret.val == (old)) \ ; \ break; \ + ) \ + LINUXKPI_ATOMIC_16( \ case 2: \ while (!atomic_fcmpset_16((volatile u16 *)(ptr), \ __ret.u16, __new.u16[0]) && __ret.val == (old)) \ ; \ break; \ + ) \ case 4: \ while (!atomic_fcmpset_32((volatile u32 *)(ptr), \ __ret.u32, __new.u32[0]) && __ret.val == (old)) \ ; \ break; \ + LINUXKPI_ATOMIC_64( \ case 8: \ while (!atomic_fcmpset_64((volatile u64 *)(ptr), \ __ret.u64, __new.u64[0]) && __ret.val == (old)) \ ; \ break; \ + ) \ } \ __ret.val; \ }) @@ -207,30 +231,39 @@ atomic_cmpxchg(atomic_t *v, int old, int new) u64 u64[0]; \ } __ret, __new = { .val = (new) }; \ \ - CTASSERT(sizeof(__ret.val) == 1 || sizeof(__ret.val) == 2 || \ - sizeof(__ret.val) == 4 || sizeof(__ret.val) == 8); \ + CTASSERT( \ + LINUXKPI_ATOMIC_8(sizeof(__ret.val) == 1 ||) \ + LINUXKPI_ATOMIC_16(sizeof(__ret.val) == 2 ||) \ + LINUXKPI_ATOMIC_64(sizeof(__ret.val) == 8 ||) \ + sizeof(__ret.val) == 4); \ \ switch (sizeof(__ret.val)) { \ + LINUXKPI_ATOMIC_8( \ case 1: \ __ret.val = READ_ONCE(*ptr); \ while (!atomic_fcmpset_8((volatile u8 *)(ptr), \ __ret.u8, __new.u8[0])) \ ; \ break; \ + ) \ + LINUXKPI_ATOMIC_16( \ case 2: \ __ret.val = READ_ONCE(*ptr); \ while (!atomic_fcmpset_16((volatile u16 *)(ptr), \ __ret.u16, __new.u16[0])) \ ; \ break; \ + ) \ case 4: \ __ret.u32[0] = atomic_swap_32((volatile u32 *)(ptr), \ __new.u32[0]); \ break; \ + LINUXKPI_ATOMIC_64( \ case 8: \ __ret.u64[0] = atomic_swap_64((volatile u64 *)(ptr), \ __new.u64[0]); \ break; \ + ) \ } \ __ret.val; \ }) |