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From: gavin hu <gavin.hu@arm.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, jerinj@marvell.com, hemant.agrawal@nxp.com,
	stephen@networkplumber.org, Honnappa.Nagarahalli@arm.com,
	gavin.hu@arm.com, nd@arm.com, stable@dpdk.org
Subject: [dpdk-stable] [PATCH v4 1/4] eal: fix clang compilation error on x86
Date: Tue, 15 Jan 2019 15:54:06 +0800	[thread overview]
Message-ID: <1547538849-10996-2-git-send-email-gavin.hu@arm.com> (raw)
In-Reply-To: <1547538849-10996-1-git-send-email-gavin.hu@arm.com>
In-Reply-To: <20181220104246.5590-1-gavin.hu@arm.com>

From: Gavin Hu <gavin.hu@arm.com>

When CONFIG_RTE_FORCE_INTRINSICS is enabled for x86, the clang
compilation error was:
	include/generic/rte_atomic.h:215:9: error:
		implicit declaration of function '__atomic_exchange_2'
		is invalid in C99
	include/generic/rte_atomic.h:494:9: error:
		implicit declaration of function '__atomic_exchange_4'
		is invalid in C99
	include/generic/rte_atomic.h:772:9: error:
		implicit declaration of function '__atomic_exchange_8'
		is invalid in C99

Use __atomic_exchange_n instead of __atomic_exchange_(2/4/8).
For more information, please refer to:
http://mails.dpdk.org/archives/dev/2018-April/096776.html

Fixes: 7bdccb93078e ("eal: fix ARM build with clang")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---
 lib/librte_eal/common/include/generic/rte_atomic.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/librte_eal/common/include/generic/rte_atomic.h b/lib/librte_eal/common/include/generic/rte_atomic.h
index b99ba46..ed5b125 100644
--- a/lib/librte_eal/common/include/generic/rte_atomic.h
+++ b/lib/librte_eal/common/include/generic/rte_atomic.h
@@ -212,7 +212,7 @@ rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val);
 static inline uint16_t
 rte_atomic16_exchange(volatile uint16_t *dst, uint16_t val)
 {
-#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG)
+#if defined(RTE_TOOLCHAIN_CLANG)
 	return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
 #else
 	return __atomic_exchange_2(dst, val, __ATOMIC_SEQ_CST);
@@ -495,7 +495,7 @@ rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val);
 static inline uint32_t
 rte_atomic32_exchange(volatile uint32_t *dst, uint32_t val)
 {
-#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG)
+#if defined(RTE_TOOLCHAIN_CLANG)
 	return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
 #else
 	return __atomic_exchange_4(dst, val, __ATOMIC_SEQ_CST);
@@ -777,7 +777,7 @@ rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val);
 static inline uint64_t
 rte_atomic64_exchange(volatile uint64_t *dst, uint64_t val)
 {
-#if defined(RTE_ARCH_ARM64) && defined(RTE_TOOLCHAIN_CLANG)
+#if defined(RTE_TOOLCHAIN_CLANG)
 	return __atomic_exchange_n(dst, val, __ATOMIC_SEQ_CST);
 #else
 	return __atomic_exchange_8(dst, val, __ATOMIC_SEQ_CST);
-- 
2.7.4

  parent reply	other threads:[~2019-01-15  7:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1547538849-10996-1-git-send-email-gavin.hu@arm.com>
     [not found] ` <20181220104246.5590-1-gavin.hu@arm.com>
     [not found]   ` <20181220174229.5834-1-gavin.hu@arm.com>
2018-12-20 17:42     ` [dpdk-stable] [PATCH v2 5/5] " Gavin Hu
2019-01-15  7:54   ` gavin hu [this message]
2019-01-15 10:32   ` [dpdk-stable] [PATCH v5 1/4] " gavin hu
2019-01-15 17:42     ` Honnappa Nagarahalli
2019-03-08  7:16   ` [dpdk-stable] [PATCH v6 1/3] test/spinlock: dealy 1 us to create contention Gavin Hu
2019-03-08  7:16   ` [dpdk-stable] [PATCH v6 2/3] test/spinlock: amortize the cost of getting time Gavin Hu
2019-03-08  7:16   ` [dpdk-stable] [PATCH v6 3/3] spinlock: reimplement with atomic one-way barrier builtins Gavin Hu
2019-03-08  7:37   ` [dpdk-stable] [PATCH v7 1/3] test/spinlock: remove 1us delay for correct benchmarking Gavin Hu
2019-03-08  7:37   ` [dpdk-stable] [PATCH v7 2/3] test/spinlock: amortize the cost of getting time Gavin Hu
2019-03-08  7:37   ` [dpdk-stable] [PATCH v7 3/3] spinlock: reimplement with atomic one-way barrier builtins Gavin Hu
2019-03-08  7:56   ` [dpdk-stable] [PATCH v8 1/3] test/spinlock: remove 1us delay for correct benchmarking Gavin Hu
2019-03-08  7:56   ` [dpdk-stable] [PATCH v8 2/3] test/spinlock: amortize the cost of getting time Gavin Hu
2019-03-08  7:56   ` [dpdk-stable] [PATCH v8 3/3] spinlock: reimplement with atomic one-way barrier builtins Gavin Hu
2019-03-12 14:53     ` [dpdk-stable] [EXT] " Jerin Jacob Kollanukkaran
2019-03-14  0:31       ` Honnappa Nagarahalli
2019-03-14  2:36         ` Gavin Hu (Arm Technology China)
2019-03-14 14:22     ` Jerin Jacob Kollanukkaran

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