From patchwork Mon Oct 26 16:37:29 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Viktorin X-Patchwork-Id: 8025 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 0BE358E79; Mon, 26 Oct 2015 17:39:41 +0100 (CET) Received: from wes1-so1.wedos.net (wes1-so1.wedos.net [46.28.106.15]) by dpdk.org (Postfix) with ESMTP id 07D1D8D3D for ; Mon, 26 Oct 2015 17:39:31 +0100 (CET) Received: from pcviktorin.fit.vutbr.cz (pcviktorin.fit.vutbr.cz [147.229.13.147]) by wes1-so1.wedos.net (Postfix) with ESMTPSA id 3nl21t6GhBz4xk; Mon, 26 Oct 2015 17:39:30 +0100 (CET) From: Jan Viktorin To: Thomas Monjalon , David Hunt , dev@dpdk.org Date: Mon, 26 Oct 2015 17:37:29 +0100 Message-Id: <1445877458-31052-8-git-send-email-viktorin@rehivetech.com> X-Mailer: git-send-email 2.6.1 In-Reply-To: <1445877458-31052-1-git-send-email-viktorin@rehivetech.com> References: <1445877458-31052-1-git-send-email-viktorin@rehivetech.com> Cc: Vlastimil Kosar Subject: [dpdk-dev] [PATCH v2 07/16] eal/arm: spinlock operations for ARM (without HTM) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Vlastimil Kosar This patch adds spinlock operations for ARM architecture. We do not support HTM in spinlocks on ARM. Signed-off-by: Vlastimil Kosar Signed-off-by: Jan Viktorin --- .../common/include/arch/arm/rte_spinlock.h | 114 +++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/arm/rte_spinlock.h diff --git a/lib/librte_eal/common/include/arch/arm/rte_spinlock.h b/lib/librte_eal/common/include/arch/arm/rte_spinlock.h new file mode 100644 index 0000000..cd5ab8b --- /dev/null +++ b/lib/librte_eal/common/include/arch/arm/rte_spinlock.h @@ -0,0 +1,114 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2015 RehiveTech. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of RehiveTech nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 COPYRIGHT + * OWNER OR CONTRIBUTORS 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. + */ + +#ifndef _RTE_SPINLOCK_ARM_H_ +#define _RTE_SPINLOCK_ARM_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include "generic/rte_spinlock.h" + +/* Intrinsics are used to implement the spinlock on ARM architecture */ + +#ifndef RTE_FORCE_INTRINSICS + +static inline void +rte_spinlock_lock(rte_spinlock_t *sl) +{ + while (__sync_lock_test_and_set(&sl->locked, 1)) + while (sl->locked) + rte_pause(); +} + +static inline void +rte_spinlock_unlock(rte_spinlock_t *sl) +{ + __sync_lock_release(&sl->locked); +} + +static inline int +rte_spinlock_trylock(rte_spinlock_t *sl) +{ + return (__sync_lock_test_and_set(&sl->locked, 1) == 0); +} + +#endif + +static inline int rte_tm_supported(void) +{ + return 0; +} + +static inline void +rte_spinlock_lock_tm(rte_spinlock_t *sl) +{ + rte_spinlock_lock(sl); /* fall-back */ +} + +static inline int +rte_spinlock_trylock_tm(rte_spinlock_t *sl) +{ + return rte_spinlock_trylock(sl); +} + +static inline void +rte_spinlock_unlock_tm(rte_spinlock_t *sl) +{ + rte_spinlock_unlock(sl); +} + +static inline void +rte_spinlock_recursive_lock_tm(rte_spinlock_recursive_t *slr) +{ + rte_spinlock_recursive_lock(slr); /* fall-back */ +} + +static inline void +rte_spinlock_recursive_unlock_tm(rte_spinlock_recursive_t *slr) +{ + rte_spinlock_recursive_unlock(slr); +} + +static inline int +rte_spinlock_recursive_trylock_tm(rte_spinlock_recursive_t *slr) +{ + return rte_spinlock_recursive_trylock(slr); +} + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_SPINLOCK_ARM_H_ */