From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id DC87D4333A; Wed, 15 Nov 2023 16:06:42 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id A5615402B0; Wed, 15 Nov 2023 16:06:42 +0100 (CET) Received: from mail-pj1-f41.google.com (mail-pj1-f41.google.com [209.85.216.41]) by mails.dpdk.org (Postfix) with ESMTP id 3B95A4027D for ; Wed, 15 Nov 2023 16:06:41 +0100 (CET) Received: by mail-pj1-f41.google.com with SMTP id 98e67ed59e1d1-28028f92709so448463a91.0 for ; Wed, 15 Nov 2023 07:06:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1700060800; x=1700665600; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=wepq5yXq6ZDxa/f/BwIKVrMs3UB2LDVcpVMo6pPamL0=; b=wP11HnqyJq4dMGSCaEDardEVKcFKu2fRSX4ZVPWCkJQdBo8fF4W02qgkR3TshMhW1o R15D1jB0pLt/kq2eFntZlM0gv7AN/1pZAWk45MxvwNZ/u7yjzgGpBV5zNZ3KiEDEIQGB +emw2Qq+mz8DHg34meDaC2xMKJRKXRnT9iLku7GKE+PAQtmtJdX1MePu2LRsFTvBSVZu R6GQ6gS78wnRuTFXhRzU8P5k4FYkSu/wW1w4I3p4OuM0vsk5rbQEmuvrwCUAoHY/ZLB7 e+hhhMKUV5qe07Rx3S6Yj/acTK+4ta2lMcNIcYz7viRycp5QqgNyvC72vkWE2XPPH6hK zSwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700060800; x=1700665600; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wepq5yXq6ZDxa/f/BwIKVrMs3UB2LDVcpVMo6pPamL0=; b=n72HFn0SCmbNYxRFCBkYJhX33OxzH376xH4LQxjRBucWIC0gec0ATWEQWgoffRW80Z 8exka7no/yLpIvhkQ+vu1OWegIS6rQlTsCkW+sl8DRsR/HKmczTcrJ//8cNvHW7why0f 3UQ0l5elSSy/8yIhasUQmVD00V9va26ZFiHF+M8FpN2tXxe5YTYOHayBUxhKcmhUK6Vl nDbSI6TZ26KO1+chaKocQ67dTPHKQVTdGIOQzF8SuWmHK8r0xIuaWH8enOWse9CyNGyO zh8LvqGJG1OJsKiu+OZ6PlvQ47yVqu5hG93xW8lg4eJrYh2HH/oxtBoTrj1tOGgL2g1F cghw== X-Gm-Message-State: AOJu0YxqpEwPzpv43YgLHST7QU9fm/hhWjgnU1d+xm+NYfgzScqQY3O1 ociDx+9EgMfRQnCyxoOutqPe6g== X-Google-Smtp-Source: AGHT+IEVV4HIecXUEL/S1RUXXbKM02Ltq54SCHbq5sF35ACPjJh6lDQWYgUmd/7JNX92U7GqR+jO6g== X-Received: by 2002:a17:90a:d348:b0:280:6cde:ecc2 with SMTP id i8-20020a17090ad34800b002806cdeecc2mr8262701pjx.11.1700060800158; Wed, 15 Nov 2023 07:06:40 -0800 (PST) Received: from hermes.local (204-195-123-141.wavecable.com. [204.195.123.141]) by smtp.gmail.com with ESMTPSA id kn11-20020a17090b480b00b00279060a0fccsm6878518pjb.9.2023.11.15.07.06.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Nov 2023 07:06:39 -0800 (PST) Date: Wed, 15 Nov 2023 07:06:35 -0800 From: Stephen Hemminger To: Morten =?UTF-8?B?QnLDuHJ1cA==?= Cc: "Dengdui Huang" , , , , , Subject: Re: [PATCH 02/43] eal: use rte strerror Message-ID: <20231115070635.17153640@hermes.local> In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9F026@smartserver.smartshare.dk> References: <20231114082539.1858594-1-huangdengdui@huawei.com> <20231114082539.1858594-3-huangdengdui@huawei.com> <20231114162254.7c065d56@hermes.local> <98CBD80474FA8B44BF855DF32C47DC35E9F026@smartserver.smartshare.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Wed, 15 Nov 2023 12:23:13 +0100 Morten Br=C3=B8rup wrote: > > From: Stephen Hemminger [mailto:stephen@networkplumber.org] > > Sent: Wednesday, 15 November 2023 01.23 > >=20 > > On Tue, 14 Nov 2023 16:24:58 +0800 > > Dengdui Huang wrote: > > =20 > > > The function strerror() is insecure in a multi-thread environment. > > > This patch uses rte_strerror() to replace it. > > > > > > Cc: stable@dpdk.org > > > > > > Signed-off-by: Dengdui Huang > > > Acked-by: Chengwen Feng > > > --- =20 > >=20 > > Look at implementation of rte_strerror(), it still has issues if > > used from non-DPDK registered threads. =20 >=20 > The macro names RTE_DEFINE_PER_LCORE() and RTE_PER_LCORE() strongly indic= ate that the variables are instantiated per lcore. >=20 > But they are not; they are instantiated per thread [1]: So rte_strerror() is thread safe (good). It make sense to use it, take back my original negative comments. We could improve documentation of rte_strerror() to help.