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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 AF0B0C7618B for ; Mon, 29 Jul 2019 12:40:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 83FC5206E0 for ; Mon, 29 Jul 2019 12:40:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="FMdTb7NC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728370AbfG2MkM (ORCPT ); Mon, 29 Jul 2019 08:40:12 -0400 Received: from bilbo.ozlabs.org ([203.11.71.1]:58383 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726986AbfG2MkL (ORCPT ); Mon, 29 Jul 2019 08:40:11 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 45xzmT2FFpz9s7T; Mon, 29 Jul 2019 22:40:09 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1564404009; bh=4dbux8Y2IDJ4EDhwD0REmwTgzoEb9eQxcpaRGFuIzmM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=FMdTb7NCf+Lf6WP2/YPUZrqnlJlghpg1I156bYWPP43qkXO7a2EgOTl3JGK8Fl6n5 uyqOn4Q7Czkw++Fvbo5epE/6LKXNYY73dwg0C23tSm4sTALah3+jROYd+BdDUWoFLz YdH8/Tny3UB1IOjlretfoo74we7pkmVLvua/QCFGN21i5ZSKg3sUNwcPnWre4lco+2 DKO9bjKV545W928GJD+rVtFN+B3rpHHHCTxXw89JAYxMzWwZFADU1ysve13RiyILLv Quqqy/lHeiKhWou0q9E+e0erRkA6tOKBD4v57v/h0bo01TeS4EfE3VXU7TujyKKOAP oQFzKE/EEbUvw== Date: Mon, 29 Jul 2019 22:40:07 +1000 From: Stephen Rothwell To: Denis Efremov Cc: Masahiro Yamada , Michal Marek , Emil Velikov , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] modpost: check for static EXPORT_SYMBOL* functions Message-ID: <20190729224007.2f7fdcb4@canb.auug.org.au> In-Reply-To: References: <20190714152817.24693-1-efremov@linux.com> <20190728100906.18847-1-efremov@linux.com> <20190729151351.24f9eeb9@canb.auug.org.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/5dSy6MPx/cOnKQYrF6_o2JA"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/5dSy6MPx/cOnKQYrF6_o2JA Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Denis, On Mon, 29 Jul 2019 12:16:29 +0300 Denis Efremov wrote: > > > Just a reminder that some of us (just me?) do well over 100+ builds per > > day ... if this can be optimised some what that would be good. =20 >=20 > These measurements for the worst case (allmodconfig). Is it possible to=20 > measure the slowdown in your case? How it will perform on your typical=20 > workflow? I did 3 x86_64 allmodconfig builds without and with the patch (I do -j 80 powerpc64 le hosted cross builds) and it doesn't look like the patch has much impact at all. Without the patch: real 8m41.390s user 587m25.249s sys 22m0.411s real 8m40.100s user 587m32.148s sys 21m58.419s real 8m40.084s user 587m25.311s sys 22m2.794s With the patch: real 8m40.351s user 587m21.819s sys 21m57.389s real 8m40.868s user 587m23.730s sys 21m58.737s real 8m40.970s user 587m22.525s sys 22m2.467s I do other builds as well, but that is the biggest, so actually looks ok. --=20 Cheers, Stephen Rothwell --Sig_/5dSy6MPx/cOnKQYrF6_o2JA Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAl0+6ScACgkQAVBC80lX 0GxtVwf+MXedKDg7Tc/3WCsRA44hxudZyWbH10T4khIcptSuioPqoBgz9abNYI3K IKyTryqu6lXAgyQvY+bYs/qqdZp9FuDcIJPVOdPmCBlRvslVom4GtJecR+DXa6Rb 6NxWWglkWJf4iJl8izJKdQTyWRI4utWrW8iERkgK3GyNubvtS8p0ZJPtOox4LhJL sL4sqBrgoZcNyUiK5LLAAt/iYZQ+IeMFDWJ5C+T4kv1JpTM1FlpqRVrIJcHLrG2N kV3DK59Si0OFGq+4FajbI72YEw+0B3qEVCBZQjYEc6gr1Gxpm8XN/9EIqJqJ2AN+ /thOOrhvw7v3oh/ZEHdSRtKGdHt1Qw== =tynr -----END PGP SIGNATURE----- --Sig_/5dSy6MPx/cOnKQYrF6_o2JA--