Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932535AbWARWF2 (ORCPT ); Wed, 18 Jan 2006 17:05:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932543AbWARWF2 (ORCPT ); Wed, 18 Jan 2006 17:05:28 -0500 Received: from kanga.kvack.org ([66.96.29.28]:27098 "EHLO kanga.kvack.org") by vger.kernel.org with ESMTP id S932535AbWARWF1 (ORCPT ); Wed, 18 Jan 2006 17:05:27 -0500 Date: Wed, 18 Jan 2006 17:01:22 -0500 From: Benjamin LaHaise To: Alan Stern Cc: Andrew Morton , Chandra Seetharaman , Keith Owens , Kernel development list Subject: Re: [PATCH 1/8] Notifier chain update Message-ID: <20060118220122.GH16285@kvack.org> References: <20060118214204.GG16285@kvack.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 725 Lines: 18 On Wed, Jan 18, 2006 at 04:57:30PM -0500, Alan Stern wrote: > Sez who? If it's not documented in the kernel source, I don't believe > it. The notifier interface is supposed to be *light weight*. Adding locks that get taken on every call basically changes the concept entirely. The cache misses notifiers add are measurable overhead, with locks being far worse. -ben -- "You know, I've seen some crystals do some pretty trippy shit, man." Don't Email: . - 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/