From owner-freebsd-current@FreeBSD.ORG Mon Jun 7 08:13:57 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9FA33106566C; Mon, 7 Jun 2010 08:13:57 +0000 (UTC) (envelope-from ed@hoeg.nl) Received: from mx0.hoeg.nl (mx0.hoeg.nl [IPv6:2001:4dd0:ff41::b23f:aa]) by mx1.freebsd.org (Postfix) with ESMTP id 6127B8FC0A; Mon, 7 Jun 2010 08:13:57 +0000 (UTC) Received: by mx0.hoeg.nl (Postfix, from userid 1000) id BA5DA2A28CD8; Mon, 7 Jun 2010 10:13:56 +0200 (CEST) Date: Mon, 7 Jun 2010 10:13:56 +0200 From: Ed Schouten To: Alexander Motin Message-ID: <20100607081356.GY56080@hoeg.nl> References: <4C0C1AE4.8050807@FreeBSD.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="M6k8nCARLe14uObT" Content-Disposition: inline In-Reply-To: <4C0C1AE4.8050807@FreeBSD.org> User-Agent: Mutt/1.5.20 (2009-06-14) Cc: FreeBSD-Current , freebsd-arch@freebsd.org Subject: Re: RFC: New event timers infrastructure X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jun 2010 08:13:57 -0000 --M6k8nCARLe14uObT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Alexander, * Alexander Motin wrote: > Most of x86 systems now has at least 4 types of event timers: i8254, > RTC, LAPIC and HPET. Respective code in kernel is very tangled, heavily > hardcoded and absolutely not scalable. I have reimplemented it, trying > to solve these issues. Just out of curiosity, how does this work relate to things like having a tickless kernel? --=20 Ed Schouten WWW: http://80386.nl/ --M6k8nCARLe14uObT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAkwMqkQACgkQ52SDGA2eCwXf+wCfZL6hoTiCdRknzG2JCQlDuasg MqsAmwQiGKF5hIKzba6mmA0LCgJnAeRw =3Wyp -----END PGP SIGNATURE----- --M6k8nCARLe14uObT--