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 CC132C004D4 for ; Thu, 19 Jan 2023 15:32:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230401AbjASPcJ (ORCPT ); Thu, 19 Jan 2023 10:32:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35448 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229653AbjASPcH (ORCPT ); Thu, 19 Jan 2023 10:32:07 -0500 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 998C783F8 for ; Thu, 19 Jan 2023 07:31:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674142282; 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=SyecrqHkLk/PkFUatvRgjW9EozPNMXCVVPb055VprZQ=; b=QcYFPrk0EYhbJF7hWYo5okjLbMcKBCZmIH2a4OxUhXz1qoJho+H8iZrCMAZFSeIx5VeCs3 GQTda3c3DQ74qiiFo9nbaepdpyxy5wXLQ3sU6L9jqHLxw5wnpMU+pEfP6Fo9+q1w2OMBGw qyg7cmRHX2wErB1zJa66XrhVeCAxnR4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-674-1xVW1Lw0O0u_uKWjSMixlA-1; Thu, 19 Jan 2023 10:31:20 -0500 X-MC-Unique: 1xVW1Lw0O0u_uKWjSMixlA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C3C32181E3EE; Thu, 19 Jan 2023 15:31:19 +0000 (UTC) Received: from lorien.usersys.redhat.com (unknown [10.22.34.25]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 71B4C2026D68; Thu, 19 Jan 2023 15:31:19 +0000 (UTC) Date: Thu, 19 Jan 2023 10:31:18 -0500 From: Phil Auld To: Greg Kroah-Hartman Cc: Vishal Chourasia , Peter Zijlstra , linux-kernel@vger.kernel.org, mingo@redhat.com, vincent.guittot@linaro.org, vschneid@redhat.com, srikar@linux.vnet.ibm.com, sshegde@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, ritesh.list@gmail.com, aneesh.kumar@linux.ibm.com Subject: Re: sched/debug: CPU hotplug operation suffers in a large cpu systems Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Greg, et alia, On Tue, Dec 13, 2022 at 03:31:06PM +0100 Greg Kroah-Hartman wrote: > On Tue, Dec 13, 2022 at 08:22:58AM -0500, Phil Auld wrote: > > > > > > The idea seems good, the implementation might need a bit of work :) > > > > More than the one comment below? Let me know. > > No idea, resubmit a working patch and I'll review it properly :) > I finally got this posted, twice :(. Sorry for the delay, I ran into what turned out to be an unrelated issue while testing it, plus end of the year holidays and what not. https://lore.kernel.org/lkml/20230119150758.880189-1-pauld@redhat.com/T/#u Cheers, Phil --