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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DAE09C00A5A for ; Thu, 19 Jan 2023 15:32:20 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4NyRSz2BSGz3fF5 for ; Fri, 20 Jan 2023 02:32:19 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=SjmLa/qL; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=SjmLa/qL; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=redhat.com (client-ip=170.10.133.124; helo=us-smtp-delivery-124.mimecast.com; envelope-from=pauld@redhat.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=SjmLa/qL; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=SjmLa/qL; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4NyRRy5xj9z3fB9 for ; Fri, 20 Jan 2023 02:31:26 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674142283; 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=SjmLa/qLwciaXVGCuvmF51HaOC2m70Lf2otCm/SaK8Kl+Y5IPKpQ/UyUWqc8c2OwQJKysT RbEAPu6O9ATob/Hg/+b6MOff5//mbZb90LoRLUctIYcEDyyh7Gd8AYpZ5oU07GTIflgMRm CDs5gE6+EtT4JBgvZgF6BX1NfN8LDXc= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674142283; 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=SjmLa/qLwciaXVGCuvmF51HaOC2m70Lf2otCm/SaK8Kl+Y5IPKpQ/UyUWqc8c2OwQJKysT RbEAPu6O9ATob/Hg/+b6MOff5//mbZb90LoRLUctIYcEDyyh7Gd8AYpZ5oU07GTIflgMRm CDs5gE6+EtT4JBgvZgF6BX1NfN8LDXc= 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 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 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ritesh.list@gmail.com, vschneid@redhat.com, vincent.guittot@linaro.org, srikar@linux.vnet.ibm.com, Peter Zijlstra , aneesh.kumar@linux.ibm.com, Vishal Chourasia , linux-kernel@vger.kernel.org, sshegde@linux.ibm.com, mingo@redhat.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 --