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 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18761C43381 for ; Wed, 27 Mar 2019 11:58:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D42362087C for ; Wed, 27 Mar 2019 11:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553687924; bh=q0BhOFMIwLvkUjfumq3asqFnAzUPsF020ocIGKxos0o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Oxy9rBE+IogSrGa/0loiA8wHorZAoBqA5vXNg1mlg/q0n/ccwdF0MQPz4XMFzvfwP ccRU+hF+pTOecVXV1rLlVAUlOW6mp2qIlwWmpuXcvRFd2i2EuB05kdrCLJrGOk7vOl 8yrUqGAX7R5RpF0QLZd7tdQ31Z6eR16fbyOuSDYY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728922AbfC0L6n (ORCPT ); Wed, 27 Mar 2019 07:58:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:59874 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726241AbfC0L6n (ORCPT ); Wed, 27 Mar 2019 07:58:43 -0400 Received: from localhost (unknown [193.47.165.251]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4DBAB2146E; Wed, 27 Mar 2019 11:58:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553687922; bh=q0BhOFMIwLvkUjfumq3asqFnAzUPsF020ocIGKxos0o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AOtuUTXeBzInNy10TKcUhHbEJguPz1cHUjOD5Jyg+6UpyZN06EnxVXXojod592woc m9dVXBT8ij+433fX65JgQdg7M2BqIlQjDfx5P1Yvydmv9qkwp+KqRufYOVKd1EYnjU pVP0M58QGtSejaRW9ZCW6oq3ma8PJVXJJev/lGEg= Date: Wed, 27 Mar 2019 13:58:39 +0200 From: Leon Romanovsky To: Borislav Petkov Cc: Joe Perches , "Rafael J . Wysocki" , Thomas Gleixner , Ingo Molnar , x86 , "H. Peter Anvin" , linux-pm , LKML Subject: Re: [PATCH -next v1] x86/apic: Reduce print level of CPU limit announcement Message-ID: <20190327115839.GW22899@mtr-leonro.mtl.com> References: <20190327093844.GO22899@mtr-leonro.mtl.com> <55774b1a8c82e94b2796c992889929f1da905d9b.camel@perches.com> <20190327095337.GP22899@mtr-leonro.mtl.com> <20190327101133.GQ22899@mtr-leonro.mtl.com> <20190327101815.GB32571@zn.tnic> <20190327105024.GR22899@mtr-leonro.mtl.com> <20190327111452.GC32571@zn.tnic> <20190327113628.GS22899@mtr-leonro.mtl.com> <20190327114917.GD32571@zn.tnic> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="phbq2bkSb+hZnunM" Content-Disposition: inline In-Reply-To: <20190327114917.GD32571@zn.tnic> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --phbq2bkSb+hZnunM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Mar 27, 2019 at 12:49:17PM +0100, Borislav Petkov wrote: > On Wed, Mar 27, 2019 at 01:36:28PM +0200, Leon Romanovsky wrote: > > At the end, it is reduced to our usage, we are running QEMU inside > > docker to test kernel changes with limitation on number of CPUs to use. > > The systems are optimized to boot kernel as soon as possible in order > > to run tests and on my machine (64 CPUs) reduce is visible: from ~2.6 > > sec to ~2.3 sec from execution to kernel boot. > > You're kidding, right? > > 0.3 sec boot time "improvement" for a kernel on which you run tests > which take orders of magnitude longer (I assume). And you want to hide > this message in the upstream kernel because you want to minimally speed > up *your* *specific* usage ? > > And we still are wasting time talking about this?! I understand your point, we will keep it internally. Sorry for wasting your time. Thanks > > Oh boy. > > -- > Regards/Gruss, > Boris. > > Good mailing practices for 400: avoid top-posting and trim the reply. --phbq2bkSb+hZnunM Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIcBAEBAgAGBQJcm2VvAAoJEORje4g2clinxEkP/R/f75qk5WO6sIAsvSO001nX vKa2ISJHa3JHWOGE/1j49Tz1jGC3AffFipHaKCraK9DfJXD0peNz/g6GF/Kyjwlc UPDyoET0pNS9af27DKOYdNWdFcFLKoEfm081qFtrol3SnwtLu31bZK6Or0NjX+SH VTV1vvkXgnmkb+mhlqIgMoaga4n5fiC+A1KUdg+CZlHR0YMp+Dfom55Ftdc1H/Rf aSRgiFCjep/vConrPe7WOQR2bhwdAZMxCQi/0hj0MlQbxk8ZqGV0WeblpyMXARoa Hdett9TOGkGSFD1SKU6vn7uKSlAmDAra6GK45JKTbWX9HQG/zrM1tFaF5efJBa2z mhgH9NkXWD2v8geh4pexxjSPRffQUBkm88IpMRohHwl6NQPpkCAxqFQtoWd+V4jv XjwBsluNA0JOCo7t10H3bHM//XdiKnawinosa76OsKoHL591Jjd5fBe0JEiWH9gM EP4nGtZ4NAzPiZat9fxp0hi6UPVhI1cX1m71TT9bMqiitPFzX3CWU5uf/ae1CgPY MHpNUv1cTPtgaIoSZ1WXVCghGuif/WEidZofVp3Beuc7lmRiU/Qxkrh2ZA6bvnb2 WHmDfMbbnllrIFgofftTOzClF7H6sioZ8cyK8GLQz4p6CPHCehCUG09Tvmk/LVkE F+BzQIXCQBYwNDD9hnfX =2dI1 -----END PGP SIGNATURE----- --phbq2bkSb+hZnunM--