Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261443AbVDHD1w (ORCPT ); Thu, 7 Apr 2005 23:27:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262665AbVDHD1w (ORCPT ); Thu, 7 Apr 2005 23:27:52 -0400 Received: from dea.vocord.ru ([217.67.177.50]:435 "EHLO vocord.com") by vger.kernel.org with ESMTP id S261443AbVDHD1t (ORCPT ); Thu, 7 Apr 2005 23:27:49 -0400 Subject: Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1] From: Evgeniy Polyakov Reply-To: johnpol@2ka.mipt.ru To: Herbert Xu Cc: akpm@osdl.org, guillaume.thouvenin@bull.net, greg@kroah.com, linux-kernel@vger.kernel.org In-Reply-To: References: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-c4nlVr4ept+CFZjbaklP" Organization: MIPT Date: Fri, 08 Apr 2005 07:33:58 +0400 Message-Id: <1112931238.28858.180.camel@uganda> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 (2.0.4-2) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.4 (vocord.com [192.168.0.1]); Fri, 08 Apr 2005 07:27:06 +0400 (MSD) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1311 Lines: 44 --=-c4nlVr4ept+CFZjbaklP Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2005-04-08 at 12:59 +1000, Herbert Xu wrote: > Evgeniy Polyakov wrote: > > > > atomic_dec_and_test() is more expensive than 2 barriers + atomic_dec(), > > but in case of connector I think the price is not so high. >=20 > Can you list the platforms on which this is true? sparc64, some mips [at least in UP]. I do not know about others, but I think that any arch, where atomic operations are serialized, has sync/isync in atomic_dec_and_test() and does not for atomic_dec(). > Thanks, --=20 Evgeniy Polyakov Crash is better than data corruption -- Arthur Grabowski --=-c4nlVr4ept+CFZjbaklP Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQBCVfumIKTPhE+8wY0RAj2iAJwJanPWfSgsEM2PaIxLu4wV0M8xugCfRMT3 pCJdIi+I0/Iw+qZ97+vtg3M= =uDsv -----END PGP SIGNATURE----- --=-c4nlVr4ept+CFZjbaklP-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/