From patchwork Wed Jan 18 15:44:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrzej Hajda X-Patchwork-Id: 13106598 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 82601C32793 for ; Wed, 18 Jan 2023 15:45:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9BCB210E788; Wed, 18 Jan 2023 15:45:49 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 50D8A10E782; Wed, 18 Jan 2023 15:45:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674056741; x=1705592741; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6s3fA2jhqnAHgwbfGrKCZDIy07cNkborYz0vvTXb80k=; b=LbsikhVgJ+c11P7JXsJkhdslgrUQqtpj3Mr8ZKL6WWkGD7uTW03wNjv+ +yANOcvRAjaCw7u3t7tn+TEo6oyFd25GSmxo3ACQrhieMYiEnJdje2i1F l+7NkbtxjAIctUlv5s1A2pUkBHu3754/AaHl4l1JhBubYFFpoSvuvj0c7 F9X4/JFLDTKxSsB9IY33W11emxXlYu+0jPYJuVOKr5AIreJxINgTAZpG+ o/Jui0QRa8cn7XwOsPghFwyQW9JQh2qoDIYW5ZbRibzBqiG00MQCq8MGA lJ20tCGg19DzoL2mpjbefQDBEYykkNIIRCi0kpz5WjQ8QzyuxqSf8jWm+ Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10594"; a="322701418" X-IronPort-AV: E=Sophos;i="5.97,226,1669104000"; d="scan'208";a="322701418" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2023 07:45:40 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10594"; a="661759384" X-IronPort-AV: E=Sophos;i="5.97,226,1669104000"; d="scan'208";a="661759384" Received: from lab-ah.igk.intel.com ([10.102.42.211]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2023 07:45:35 -0800 From: Andrzej Hajda To: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Wed, 18 Jan 2023 16:44:49 +0100 Message-Id: <20230118154450.73842-6-andrzej.hajda@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230118154450.73842-1-andrzej.hajda@intel.com> References: <20230118153529.57695-1-andrzej.hajda@intel.com> <20230118154450.73842-1-andrzej.hajda@intel.com> MIME-Version: 1.0 Organization: Intel Technology Poland sp. z o.o. - ul. Slowackiego 173, 80-298 Gdansk - KRS 101882 - NIP 957-07-52-316 Subject: [Intel-gfx] [PATCH v5 6/7] qed: use __xchg if possible X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Arnd Bergmann , Peter Zijlstra , Boqun Feng , Andrzej Hajda , Rodrigo Vivi , Andrew Morton , Andy Shevchenko Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Recently introduced helper simplifies the code. Signed-off-by: Andrzej Hajda Reviewed-by: Andi Shyti --- include/linux/qed/qed_chain.h | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h index a84063492c71ae..6355d558cf01b2 100644 --- a/include/linux/qed/qed_chain.h +++ b/include/linux/qed/qed_chain.h @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -368,7 +369,7 @@ static inline void qed_chain_return_produced(struct qed_chain *p_chain) */ static inline void *qed_chain_produce(struct qed_chain *p_chain) { - void *p_ret = NULL, *p_prod_idx, *p_prod_page_idx; + void *p_prod_idx, *p_prod_page_idx; if (is_chain_u16(p_chain)) { if ((p_chain->u.chain16.prod_idx & @@ -390,11 +391,8 @@ static inline void *qed_chain_produce(struct qed_chain *p_chain) p_chain->u.chain32.prod_idx++; } - p_ret = p_chain->p_prod_elem; - p_chain->p_prod_elem = (void *)(((u8 *)p_chain->p_prod_elem) + - p_chain->elem_size); - - return p_ret; + return __xchg(&p_chain->p_prod_elem, + (u8 *)p_chain->p_prod_elem + p_chain->elem_size); } /** @@ -439,7 +437,7 @@ static inline void qed_chain_recycle_consumed(struct qed_chain *p_chain) */ static inline void *qed_chain_consume(struct qed_chain *p_chain) { - void *p_ret = NULL, *p_cons_idx, *p_cons_page_idx; + void *p_cons_idx, *p_cons_page_idx; if (is_chain_u16(p_chain)) { if ((p_chain->u.chain16.cons_idx & @@ -461,11 +459,8 @@ static inline void *qed_chain_consume(struct qed_chain *p_chain) p_chain->u.chain32.cons_idx++; } - p_ret = p_chain->p_cons_elem; - p_chain->p_cons_elem = (void *)(((u8 *)p_chain->p_cons_elem) + - p_chain->elem_size); - - return p_ret; + return __xchg(&p_chain->p_cons_elem, + (u8 *)p_chain->p_cons_elem + p_chain->elem_size); } /**