Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752885Ab0KXPZS (ORCPT ); Wed, 24 Nov 2010 10:25:18 -0500 Received: from canuck.infradead.org ([134.117.69.58]:48299 "EHLO canuck.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868Ab0KXPZR convert rfc822-to-8bit (ORCPT ); Wed, 24 Nov 2010 10:25:17 -0500 Subject: Re: [PATCH 1/3] jump label: add enabled/disabled state to jump label key entries From: Peter Zijlstra To: Jason Baron Cc: Steven Rostedt , mingo@elte.hu, mathieu.desnoyers@polymtl.ca, hpa@zytor.com, tglx@linutronix.de, andi@firstfloor.org, roland@redhat.com, rth@redhat.com, masami.hiramatsu.pt@hitachi.com, fweisbec@gmail.com, avi@redhat.com, davem@davemloft.net, sam@ravnborg.org, ddaney@caviumnetworks.com, michael@ellerman.id.au, linux-kernel@vger.kernel.org In-Reply-To: <20101124152118.GC2815@redhat.com> References: <1290586809.2072.424.camel@laptop> <20101124145401.GA2815@redhat.com> <1290611702.30543.488.camel@gandalf.stny.rr.com> <20101124152118.GC2815@redhat.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 24 Nov 2010 16:25:23 +0100 Message-ID: <1290612323.2072.487.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 607 Lines: 13 On Wed, 2010-11-24 at 10:21 -0500, Jason Baron wrote: > > The keys are simply the address of a variable or structure (so as to be > unique). We can put pointers or anything else in the variable. If you keep the key type fixed, like say an atomic_t, you can easily read it and know if an jump-label is enabled or disabled if you load its text later (modules). -- 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/