From owner-freebsd-hackers@FreeBSD.ORG Mon Jul 25 14:40:40 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 42932106564A for ; Mon, 25 Jul 2011 14:40:40 +0000 (UTC) (envelope-from filippo.sironi@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id CCA1B8FC15 for ; Mon, 25 Jul 2011 14:40:39 +0000 (UTC) Received: by wyg24 with SMTP id 24so3702134wyg.13 for ; Mon, 25 Jul 2011 07:40:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:content-type:content-transfer-encoding:subject:date:message-id :to:mime-version:x-mailer; bh=IzN7NgumfseyNdQed24r5gcfVwxvRUQtr74Aj5I1f5g=; b=VUD9jUXJAYoxFxjHv9Sz+X9v83iIDZ8FcnUna0D4Z6oWAHxCpOjkAu0CawHzRCWGoB IDNCsywhcJN1BtheS0ZnowCMuvjZ9BOxO1XO9YVK6BsJ01U6Tyh4DWAutRnY6et+SyQy 71TXK5U11VD0055RYcYgKfv0snxF8VYKCbSYI= Received: by 10.227.202.19 with SMTP id fc19mr1424458wbb.61.1311603202677; Mon, 25 Jul 2011 07:13:22 -0700 (PDT) Received: from filippo.sironi.dynamic.micro.elet.polimi.it (micro.elet.polimi.it [131.175.127.118]) by mx.google.com with ESMTPS id b13sm4354050wbh.58.2011.07.25.07.13.21 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 25 Jul 2011 07:13:22 -0700 (PDT) From: Filippo Sironi Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Date: Mon, 25 Jul 2011 16:13:19 +0200 Message-Id: <3AD5705F-0C4E-43CB-8A9C-3416171AEA30@gmail.com> To: freebsd-hackers@freebsd.org Mime-Version: 1.0 (Apple Message framework v1244.3) X-Mailer: Apple Mail (2.1244.3) Subject: Kernel timers infrastructure X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Jul 2011 14:40:40 -0000 Hi everyone, I'm working on a university project that's based on FreeBSD and I'm = currently hacking the kernel... but I'm a complete newbie. My question is: what if I have to call a certain function 10 times per = second? I've seen a bit of code regarding callout_* functions but I can't get = through them. Is there anyone who can help me? Thanks, Filippo