diff options
author | 2018-06-01 09:09:08 +0200 | |
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committer | 2018-06-01 09:12:07 +0200 | |
commit | 1bd9b61222f3a81ffe770fc00b70ded6e760c42b (patch) | |
tree | 0bf7d996cf0664796687c1be6d22958fcf6a8096 /lib/librte_eal/common/include/generic | |
parent | bb4e158029645f37809fcf81a3acddd6fa11f88a (diff) |
New upstream version 18.05
Change-Id: Icd4170ddc4f63aeae5d0559490e5195b5349f9c2
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_eal/common/include/generic')
4 files changed, 116 insertions, 5 deletions
diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h b/lib/librte_eal/common/include/generic/rte_atomic.h index 50e1b8a4..b99ba468 100644 --- a/lib/librte_eal/common/include/generic/rte_atomic.h +++ b/lib/librte_eal/common/include/generic/rte_atomic.h @@ -191,6 +191,36 @@ rte_atomic16_cmpset(volatile uint16_t *dst, uint16_t exp, uint16_t src) #endif /** + * Atomic exchange. + * + * (atomic) equivalent to: + * ret = *dst + * *dst = val; + * return ret; + * + * @param dst + * The destination location into which the value will be written. + * @param val + * The new value. + * @return + * The original value at that location + */ +static inline uint16_t +rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val); + +#ifdef RTE_FORCE_INTRINSICS +static inline uint16_t +rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val) +{ +#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG) + return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); +#else + return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST); +#endif +} +#endif + +/** * The atomic counter structure. */ typedef struct { @@ -444,6 +474,36 @@ rte_atomic32_cmpset(volatile uint32_t *dst, uint32_t exp, uint32_t src) #endif /** + * Atomic exchange. + * + * (atomic) equivalent to: + * ret = *dst + * *dst = val; + * return ret; + * + * @param dst + * The destination location into which the value will be written. + * @param val + * The new value. + * @return + * The original value at that location + */ +static inline uint32_t +rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val); + +#ifdef RTE_FORCE_INTRINSICS +static inline uint32_t +rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val) +{ +#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG) + return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); +#else + return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST); +#endif +} +#endif + +/** * The atomic counter structure. */ typedef struct { @@ -696,6 +756,36 @@ rte_atomic64_cmpset(volatile uint64_t *dst, uint64_t exp, uint64_t src) #endif /** + * Atomic exchange. + * + * (atomic) equivalent to: + * ret = *dst + * *dst = val; + * return ret; + * + * @param dst + * The destination location into which the value will be written. + * @param val + * The new value. + * @return + * The original value at that location + */ +static inline uint64_t +rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val); + +#ifdef RTE_FORCE_INTRINSICS +static inline uint64_t +rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val) +{ +#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG) + return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST); +#else + return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST); +#endif +} +#endif + +/** * The atomic counter structure. */ typedef struct { diff --git a/lib/librte_eal/common/include/generic/rte_byteorder.h b/lib/librte_eal/common/include/generic/rte_byteorder.h index 9bed85cc..7d9a1463 100644 --- a/lib/librte_eal/common/include/generic/rte_byteorder.h +++ b/lib/librte_eal/common/include/generic/rte_byteorder.h @@ -123,7 +123,7 @@ typedef uint64_t rte_le64_t; /**< 64-bit little-endian value. */ static inline uint16_t rte_constant_bswap16(uint16_t x) { - return RTE_STATIC_BSWAP16(x); + return (uint16_t)RTE_STATIC_BSWAP16(x); } /* @@ -135,7 +135,7 @@ rte_constant_bswap16(uint16_t x) static inline uint32_t rte_constant_bswap32(uint32_t x) { - return RTE_STATIC_BSWAP32(x); + return (uint32_t)RTE_STATIC_BSWAP32(x); } /* @@ -147,7 +147,7 @@ rte_constant_bswap32(uint32_t x) static inline uint64_t rte_constant_bswap64(uint64_t x) { - return RTE_STATIC_BSWAP64(x); + return (uint64_t)RTE_STATIC_BSWAP64(x); } diff --git a/lib/librte_eal/common/include/generic/rte_cpuflags.h b/lib/librte_eal/common/include/generic/rte_cpuflags.h index 8d31687d..156ea002 100644 --- a/lib/librte_eal/common/include/generic/rte_cpuflags.h +++ b/lib/librte_eal/common/include/generic/rte_cpuflags.h @@ -64,4 +64,25 @@ rte_cpu_check_supported(void); int rte_cpu_is_supported(void); +/** + * This function attempts to retrieve a value from the auxiliary vector. + * If it is unsuccessful, the result will be 0, and errno will be set. + * + * @return A value from the auxiliary vector. When the value is 0, check + * errno to determine if an error occurred. + */ +unsigned long +rte_cpu_getauxval(unsigned long type); + +/** + * This function retrieves a value from the auxiliary vector, and compares it + * as a string against the value retrieved. + * + * @return The result of calling strcmp() against the value retrieved from + * the auxiliary vector. When the value is 0 (meaning a match is found), + * check errno to determine if an error occurred. + */ +int +rte_cpu_strcmp_auxval(unsigned long type, const char *str); + #endif /* _RTE_CPUFLAGS_H_ */ diff --git a/lib/librte_eal/common/include/generic/rte_rwlock.h b/lib/librte_eal/common/include/generic/rte_rwlock.h index 899e9bc4..5751a0e6 100644 --- a/lib/librte_eal/common/include/generic/rte_rwlock.h +++ b/lib/librte_eal/common/include/generic/rte_rwlock.h @@ -71,7 +71,7 @@ rte_rwlock_read_lock(rte_rwlock_t *rwl) continue; } success = rte_atomic32_cmpset((volatile uint32_t *)&rwl->cnt, - x, x + 1); + (uint32_t)x, (uint32_t)(x + 1)); } } @@ -107,7 +107,7 @@ rte_rwlock_write_lock(rte_rwlock_t *rwl) continue; } success = rte_atomic32_cmpset((volatile uint32_t *)&rwl->cnt, - 0, -1); + 0, (uint32_t)-1); } } |