Index: head/sys/compat/linuxkpi/common/include/asm/atomic-long.h =================================================================== --- head/sys/compat/linuxkpi/common/include/asm/atomic-long.h (revision 341788) +++ head/sys/compat/linuxkpi/common/include/asm/atomic-long.h (revision 341789) @@ -1,127 +1,119 @@ /*- * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. * Copyright (c) 2013-2017 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _ATOMIC_LONG_H_ #define _ATOMIC_LONG_H_ #include #include #include #define ATOMIC_LONG_INIT(x) { .counter = (x) } typedef struct { volatile long counter; } atomic_long_t; #define atomic_long_add(i, v) atomic_long_add_return((i), (v)) #define atomic_long_inc_return(v) atomic_long_add_return(1, (v)) #define atomic_long_inc_not_zero(v) atomic_long_add_unless((v), 1, 0) static inline long atomic_long_add_return(long i, atomic_long_t *v) { return i + atomic_fetchadd_long(&v->counter, i); } static inline void atomic_long_set(atomic_long_t *v, long i) { WRITE_ONCE(v->counter, i); } static inline long atomic_long_read(atomic_long_t *v) { return READ_ONCE(v->counter); } static inline long atomic_long_inc(atomic_long_t *v) { return atomic_fetchadd_long(&v->counter, 1) + 1; } static inline long atomic_long_dec(atomic_long_t *v) { return atomic_fetchadd_long(&v->counter, -1) - 1; } static inline long atomic_long_xchg(atomic_long_t *v, long val) { -#if defined(__i386__) || defined(__amd64__) || defined(__aarch64__) return atomic_swap_long(&v->counter, val); -#else - long ret = atomic_long_read(v); - - while (!atomic_fcmpset_long(&v->counter, &ret, val)) - ; - return (ret); -#endif } static inline long atomic_long_cmpxchg(atomic_long_t *v, long old, long new) { long ret = old; for (;;) { if (atomic_fcmpset_long(&v->counter, &ret, new)) break; if (ret != old) break; } return (ret); } static inline int atomic_long_add_unless(atomic_long_t *v, long a, long u) { long c = atomic_long_read(v); for (;;) { if (unlikely(c == u)) break; if (likely(atomic_fcmpset_long(&v->counter, &c, c + a))) break; } return (c != u); } static inline long atomic_long_dec_and_test(atomic_long_t *v) { long i = atomic_long_add(-1, v); return i == 0 ; } #endif /* _ATOMIC_LONG_H_ */ Index: head/sys/compat/linuxkpi/common/include/asm/atomic.h =================================================================== --- head/sys/compat/linuxkpi/common/include/asm/atomic.h (revision 341788) +++ head/sys/compat/linuxkpi/common/include/asm/atomic.h (revision 341789) @@ -1,315 +1,307 @@ /*- * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. * Copyright (c) 2013-2018 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _ASM_ATOMIC_H_ #define _ASM_ATOMIC_H_ #include #include #include #define ATOMIC_INIT(x) { .counter = (x) } typedef struct { volatile int counter; } atomic_t; /*------------------------------------------------------------------------* * 32-bit atomic operations *------------------------------------------------------------------------*/ #define atomic_add(i, v) atomic_add_return((i), (v)) #define atomic_sub(i, v) atomic_sub_return((i), (v)) #define atomic_inc_return(v) atomic_add_return(1, (v)) #define atomic_add_negative(i, v) (atomic_add_return((i), (v)) < 0) #define atomic_add_and_test(i, v) (atomic_add_return((i), (v)) == 0) #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_return(v) atomic_sub_return(1, (v)) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) static inline int atomic_add_return(int i, atomic_t *v) { return i + atomic_fetchadd_int(&v->counter, i); } static inline int atomic_sub_return(int i, atomic_t *v) { return atomic_fetchadd_int(&v->counter, -i) - i; } static inline void atomic_set(atomic_t *v, int i) { WRITE_ONCE(v->counter, i); } static inline void atomic_set_release(atomic_t *v, int i) { atomic_store_rel_int(&v->counter, i); } static inline void atomic_set_mask(unsigned int mask, atomic_t *v) { atomic_set_int(&v->counter, mask); } static inline int atomic_read(const atomic_t *v) { return READ_ONCE(v->counter); } static inline int atomic_inc(atomic_t *v) { return atomic_fetchadd_int(&v->counter, 1) + 1; } static inline int atomic_dec(atomic_t *v) { return atomic_fetchadd_int(&v->counter, -1) - 1; } static inline int atomic_add_unless(atomic_t *v, int a, int u) { int c = atomic_read(v); for (;;) { if (unlikely(c == u)) break; if (likely(atomic_fcmpset_int(&v->counter, &c, c + a))) break; } return (c != u); } static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) { atomic_clear_int(&v->counter, mask); } static inline int atomic_xchg(atomic_t *v, int i) { -#if !defined(__mips__) return (atomic_swap_int(&v->counter, i)); -#else - int ret = atomic_read(v); - - while (!atomic_fcmpset_int(&v->counter, &ret, i)) - ; - return (ret); -#endif } static inline int atomic_cmpxchg(atomic_t *v, int old, int new) { int ret = old; for (;;) { if (atomic_fcmpset_int(&v->counter, &ret, new)) break; if (ret != old) break; } return (ret); } #if defined(__amd64__) || defined(__arm64__) || defined(__i386__) #define LINUXKPI_ATOMIC_8(...) __VA_ARGS__ #define LINUXKPI_ATOMIC_16(...) __VA_ARGS__ #else #define LINUXKPI_ATOMIC_8(...) #define LINUXKPI_ATOMIC_16(...) #endif #if !(defined(i386) || (defined(__mips__) && !(defined(__mips_n32) || \ defined(__mips_n64))) || (defined(__powerpc__) && \ !defined(__powerpc64__))) #define LINUXKPI_ATOMIC_64(...) __VA_ARGS__ #else #define LINUXKPI_ATOMIC_64(...) #endif #define cmpxchg(ptr, old, new) ({ \ union { \ __typeof(*(ptr)) val; \ u8 u8[0]; \ u16 u16[0]; \ u32 u32[0]; \ u64 u64[0]; \ } __ret = { .val = (old) }, __new = { .val = (new) }; \ \ 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; \ }) #define cmpxchg_relaxed(...) cmpxchg(__VA_ARGS__) #define xchg(ptr, new) ({ \ union { \ __typeof(*(ptr)) val; \ u8 u8[0]; \ u16 u16[0]; \ u32 u32[0]; \ u64 u64[0]; \ } __ret, __new = { .val = (new) }; \ \ 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; \ }) static inline int atomic_dec_if_positive(atomic_t *v) { int retval; int old; old = atomic_read(v); for (;;) { retval = old - 1; if (unlikely(retval < 0)) break; if (likely(atomic_fcmpset_int(&v->counter, &old, retval))) break; } return (retval); } #define LINUX_ATOMIC_OP(op, c_op) \ static inline void atomic_##op(int i, atomic_t *v) \ { \ int c, old; \ \ c = v->counter; \ while ((old = atomic_cmpxchg(v, c, c c_op i)) != c) \ c = old; \ } #define LINUX_ATOMIC_FETCH_OP(op, c_op) \ static inline int atomic_fetch_##op(int i, atomic_t *v) \ { \ int c, old; \ \ c = v->counter; \ while ((old = atomic_cmpxchg(v, c, c c_op i)) != c) \ c = old; \ \ return (c); \ } LINUX_ATOMIC_OP(or, |) LINUX_ATOMIC_OP(and, &) LINUX_ATOMIC_OP(andnot, &~) LINUX_ATOMIC_OP(xor, ^) LINUX_ATOMIC_FETCH_OP(or, |) LINUX_ATOMIC_FETCH_OP(and, &) LINUX_ATOMIC_FETCH_OP(andnot, &~) LINUX_ATOMIC_FETCH_OP(xor, ^) #endif /* _ASM_ATOMIC_H_ */