From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 272EBC678D5 for ; Tue, 7 Mar 2023 15:43:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229789AbjCGPni (ORCPT ); Tue, 7 Mar 2023 10:43:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229913AbjCGPng (ORCPT ); Tue, 7 Mar 2023 10:43:36 -0500 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 346DA2B633 for ; Tue, 7 Mar 2023 07:43:09 -0800 (PST) Received: by mail-pl1-x62d.google.com with SMTP id n6so14533702plf.5 for ; Tue, 07 Mar 2023 07:43:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1678203788; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=Ilfr+1i799vX4Awe1xzUE2lv9oMRNYBat0+WkLXzJh4=; b=JGnI3nQgJGHR/Q/Zwt5DW83P/LwKODyBhJHXws9ipHtoOhUIgdsXCaHscPh8kFkZnF wxar0A216bOxVopFnY5bdE1JOv/CzjzCtkvyybzsspkL3toK+g4Ub/D3t/+71cS8kbXR 20sRnQG5S3Gp9uvDy++9EHEYI6OnMegzkOQRmvAnZYuuSeEGYAolxs/ANq3RTTegCM8M eOMBWLYdxuaZPWnKNwtfJ71rtmeOBZXDeeF/tubG+rRUj6OT5cs5gPfk6wBOuWP4S/BX tDFAbfNupju2CPJvoq0INdOb2B7pPsBJ0s23ICUILy8M55mIpgoyv+NSIDivcS5tizTh Zc7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678203788; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Ilfr+1i799vX4Awe1xzUE2lv9oMRNYBat0+WkLXzJh4=; b=cG3BbeWasYoa2ozOwokbXCsCNQitOUK1tQ6r+2L45IF2qJjj7OwFmPY+6HYwh5+HTA nPH7CN9UFmK1ZFTrx7GR5HNFPWBx1zSbDWIb9iBAV77nf9/5kCg/Yw7oZGoFbTvCvdLf YoDT5JFsqPF/ypJglJnN8eski4kcORYN+OSVKkPJPel2PUSZxu6vAnWrJdyrZdnARq9Q nONTCqWt9oFAoLJ+xqZdm/omXnqNGQwMTFJMWaSPm3RvNjOZzQgav7wajn8Dbsy5M5Nn Fwi8l+ldoQDO23UxVY0Epu5IcDdy+cnyP+phF0upD2YjHbjfIgsyVZLJ5Z9Wf183Qa5y ftYA== X-Gm-Message-State: AO0yUKW5g5DMPWWFmryOv6w7JRMRY2Rv3iJNWt7is7GYzkueDRR5/6N/ 7jO18Gh3tysJ4o4iGVyjN4ZFsJLT1EWRBnKRB2ZzsQ== X-Google-Smtp-Source: AK7set+MgPF5QPlQTLNs4LHgUI2HeZ1K3YqQFekmIqHmRkXcwvFqToPXYxYWK/CTwDYC06sjeS58JA== X-Received: by 2002:a05:6a20:8987:b0:c7:7248:4e49 with SMTP id h7-20020a056a20898700b000c772484e49mr12097988pzg.38.1678203787735; Tue, 07 Mar 2023 07:43:07 -0800 (PST) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id u6-20020aa78386000000b005d35695a66csm8023928pfm.137.2023.03.07.07.43.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Mar 2023 07:43:07 -0800 (PST) Date: Tue, 7 Mar 2023 15:43:03 +0000 From: Carlos Llamas To: Jialu Xu Cc: gregkh@linuxfoundation.org, cristian.ciocaltea@collabora.com, masahiroy@kernel.org, vipinsh@google.com, stable@vger.kernel.org Subject: Re: [PATCH v2] scripts/tags.sh: fix incompatibility with PCRE2 Message-ID: References: <20230215183850.3353198-1-cmllamas@google.com> <20230303112051.3890371-1-xujialu@vimux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230303112051.3890371-1-xujialu@vimux.org> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Fri, Mar 03, 2023 at 07:20:51PM +0800, Jialu Xu wrote: > > Just got a working grep without \K, seems that it is three times more > efficient than sed in my test, is it necessary to update? > > grep -Poh '(?<=^ )\S+|(?<== )\S+[^\\](?=$)' {} \+ | > > -- > Jialu > I just tried this and it does have better performance. Even better than your previous grep expression it seems, so I would definitely send a patch. -- Carlos Llamas