Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756202Ab0KJOZM (ORCPT ); Wed, 10 Nov 2010 09:25:12 -0500 Received: from smtp-out.google.com ([216.239.44.51]:53460 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755816Ab0KJOZH convert rfc822-to-8bit (ORCPT ); Wed, 10 Nov 2010 09:25:07 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=google.com; s=beta; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=fQu/NKNTvg3tmFrRklg5aY3l5Sc5Otk2+UYBZdccb11L4lk9n1Dr9CAydV2Iw72ucY Qx0M1Sbxf/vxYzJseu0g== MIME-Version: 1.0 In-Reply-To: <1289398207.2191.117.camel@laptop> References: <1289339119.2191.92.camel@laptop> <1289398207.2191.117.camel@laptop> Date: Wed, 10 Nov 2010 15:24:57 +0100 Message-ID: Subject: Re: [RFC][PATCH] perf: sysfs type id From: Stephane Eranian To: Peter Zijlstra Cc: LKML , Ingo Molnar , Lin Ming , "robert.richter" , Corey Ashford , fweisbec , paulus , Greg Kroah-Hartman , Kay Sievers , "H. Peter Anvin" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1099 Lines: 35 On Wed, Nov 10, 2010 at 3:10 PM, Peter Zijlstra wrote: > On Wed, 2010-11-10 at 14:01 +0100, Stephane Eranian wrote: >> Peter, > >> > 6 >> >> And then, what do you do with 6? >> I assume you have to pass it in the attr struct. > > perf_event_attr::type, as said in the initial changelog. > >> How do you plan on doing this while keeping what is already there? > > +       if (type < 0) { > +               err = idr_get_new_above(&pmu_idr, pmu, PERF_TYPE_MAX, &type); > > and > > +       rcu_read_lock(); > +       pmu = idr_find(&pmu_idr, event->attr.type); > +       rcu_read_unlock(); > +       if (pmu) > +               goto unlock; > > > So we start dynamic IDs at the top of the static range, and only do > dynamic IDs for those that don't already have a static number. > > Ok, should work fine. -- 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/