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[209.132.180.67]) by mx.google.com with ESMTP id k184si4852115oib.239.2020.01.31.11.24.57; Fri, 31 Jan 2020 11:25:10 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=bud6IoQg; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726239AbgAaTXV (ORCPT + 99 others); Fri, 31 Jan 2020 14:23:21 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:55141 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725954AbgAaTXV (ORCPT ); Fri, 31 Jan 2020 14:23:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580498600; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YM162lFOZbA6IsWSVcqJtnitrz4+KcB6/sl6grgAghs=; b=bud6IoQgyTUuMOyI1kL3wgdQOAUSz7AYkFvF53kzToHqA0uhBHF4LTZ427rKIbVqlZ2cQj 8CvWg5V0qsaDQr+MGnT/e9Q/6OAgxjC5/nBYe9N/MfE12dC705MaZYSxXLb/RuCGy3vPPB V587rzy445s5/peHWai6QN14WMnwROw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-297-AdHzt5F-PbiAhd5xZtaErg-1; Fri, 31 Jan 2020 14:23:17 -0500 X-MC-Unique: AdHzt5F-PbiAhd5xZtaErg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D467B1005512; Fri, 31 Jan 2020 19:23:15 +0000 (UTC) Received: from llong.remote.csb (dhcp-17-59.bos.redhat.com [10.18.17.59]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7D8B8100EBA8; Fri, 31 Jan 2020 19:23:06 +0000 (UTC) Subject: Re: [PATCH -v2 0/7] locking: Percpu-rwsem rewrite To: Peter Zijlstra , mingo@kernel.org, will@kernel.org Cc: oleg@redhat.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, bigeasy@linutronix.de, juri.lelli@redhat.com, williams@redhat.com, bristot@redhat.com, dave@stgolabs.net, jack@suse.com References: <20200131150703.194229898@infradead.org> From: Waiman Long Organization: Red Hat Message-ID: Date: Fri, 31 Jan 2020 14:23:06 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20200131150703.194229898@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/31/20 10:07 AM, Peter Zijlstra wrote: > Hi all, > > This is the long awaited report of the percpu-rwsem rework (sorry Juri). > > IIRC (I really have trouble keeping up momentum on this series) I've addressed > all previous comments by Oleg and Davidlohr and Waiman and hope we can stick > this in tip/locking/core for inclusion in the next merge. > > It has been cooked (thoroughly) in PREEMPT_RT, and not found wanting. > > Any objections to me stuffing it in so we can all forget about it properly? > > The patchset looks good to me. Acked-by: Waiman Long Cheers, Longman