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 C64A5ECAAA2 for ; Thu, 25 Aug 2022 23:17:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243854AbiHYXRa (ORCPT ); Thu, 25 Aug 2022 19:17:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236827AbiHYXR2 (ORCPT ); Thu, 25 Aug 2022 19:17:28 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CFC8B442E for ; Thu, 25 Aug 2022 16:17:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661469447; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=K6IqYdtlgkGTFXh/CrtZFmNhEM6cVjYadyTzynsMreE=; b=P3Z1uV/kXxO9dAn+59R0n+ShXIS5tK6PNsHxF/f2zHRwntAJeH5fClLZJOrxpIK+zWv46/ cuDRH1L5I1MXzlZlSJkfwrqm0ykXxyT/YdiA3alMXx3LXXMRSvtmTbZuBxFUKgMINyVF8/ oyQEXLMwTDL8HuMCXpMGACnYNQQhT64= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-152-Awb_4zvWOxCXAmRG3LtWMg-1; Thu, 25 Aug 2022 19:17:22 -0400 X-MC-Unique: Awb_4zvWOxCXAmRG3LtWMg-1 Received: by mail-wm1-f72.google.com with SMTP id c64-20020a1c3543000000b003a61987ffb3so20500wma.6 for ; Thu, 25 Aug 2022 16:17:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:message-id:date:references:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc; bh=K6IqYdtlgkGTFXh/CrtZFmNhEM6cVjYadyTzynsMreE=; b=zusE3DzYblHP7SG3oFHy2naMMHpBkCkTVkjhIesRnxSS989NFawLSHCA01l7yekgG7 y30o+InCxWFWM7fjcv24zJsHlOP/sOF5XwHivW+sQB00GmrybGmzJ9fzccc46dW5ySnk h8nbEynnoAAx2IBWQL/YumaM0+exxc7KfSroo3zojcfuFbovyLFJsqCMtM3zGIfg2s8B 0JziQsWy5x0EBkltVHu1k2Gf59yJyeMvMX5JSpRW0gYrgMt0xD31Vuru7cBS4FhckrpH ALTdWnOMx7C1MvN3W1DRoFh1XNKG1oIw+Z9RmefvMTomlXSbYOnV3VwfPRqg2k/qertc +GmA== X-Gm-Message-State: ACgBeo3d6qRwKlNGAqOO9bITMll2eMXGAD5kNK8DBCdMpJaBKSx56Z3R 0af4VW6E7p5wYFzGcf6ltKqvW3kGN4b6BhisIRUqGtN5GVlxtVzAEdEy8zT65f8xmLqInow1GfD xl9hRtVNrywPOzcQT X-Received: by 2002:a5d:5985:0:b0:222:c5dd:b7c8 with SMTP id n5-20020a5d5985000000b00222c5ddb7c8mr3504030wri.511.1661469441463; Thu, 25 Aug 2022 16:17:21 -0700 (PDT) X-Google-Smtp-Source: AA6agR69aRJWSvroO1rYxs4Q8ah8RPjKum/nyjTtNH7rEv6bS/g//UO1WyhZxD9GFFORywOnXyXxYw== X-Received: by 2002:a5d:5985:0:b0:222:c5dd:b7c8 with SMTP id n5-20020a5d5985000000b00222c5ddb7c8mr3503998wri.511.1661469441183; Thu, 25 Aug 2022 16:17:21 -0700 (PDT) Received: from vschneid.remote.csb ([185.11.37.247]) by smtp.gmail.com with ESMTPSA id m5-20020a05600c4f4500b003a64f684704sm7526156wmq.40.2022.08.25.16.17.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Aug 2022 16:17:20 -0700 (PDT) From: Valentin Schneider To: Yury Norov Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Saeed Mahameed , Leon Romanovsky , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andy Shevchenko , Rasmus Villemoes , Ingo Molnar , Peter Zijlstra , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Mel Gorman , Greg Kroah-Hartman , Heiko Carstens , Tony Luck , Jonathan Cameron , Gal Pressman , Tariq Toukan , Jesse Brandeburg Subject: Re: [PATCH v3 3/9] bitops: Introduce find_next_andnot_bit() In-Reply-To: References: <20220825181210.284283-1-vschneid@redhat.com> <20220825181210.284283-4-vschneid@redhat.com> Date: Fri, 26 Aug 2022 00:17:19 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 25/08/22 14:05, Yury Norov wrote: > On Thu, Aug 25, 2022 at 07:12:04PM +0100, Valentin Schneider wrote: >> In preparation of introducing for_each_cpu_andnot(), add a variant of >> find_next_bit() that negate the bits in @addr2 when ANDing them with the >> bits in @addr1. >> >> Note that the _find_next_bit() @invert argument now gets split into two: >> @invert1 for words in @addr1, @invert2 for words in @addr2. The only >> current users of _find_next_bit() with @invert set are: >> o find_next_zero_bit() >> o find_next_zero_bit_le() >> and neither of these pass an @addr2, so the conversion is straightforward. >> >> Signed-off-by: Valentin Schneider > > Have you seen this series? > https://lore.kernel.org/lkml/YwaXvphVpy5A7fSs@yury-laptop/t/ > > It will significantly simplify your work for adding the > find_next_andnot_bit(). If you wait a week or so, you'll most likely > find it in -next. > I hadn't seen it, it does look promising. I'm about to disappear for a week, so I'll have a look once I'm back. > Thanks, > Yury