From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 Date: Mon, 29 Jul 2019 22:40:07 +1000 From: Stephen Rothwell 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-kbuild-owner@vger.kernel.org List-ID: To: Denis Efremov Cc: Masahiro Yamada , Michal Marek , Emil Velikov , linux-kbuild@vger.kernel.org, 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--