Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936156Ab3DJLZE (ORCPT ); Wed, 10 Apr 2013 07:25:04 -0400 Received: from mail-ee0-f46.google.com ([74.125.83.46]:35583 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935845Ab3DJLZB (ORCPT ); Wed, 10 Apr 2013 07:25:01 -0400 Date: Wed, 10 Apr 2013 13:24:56 +0200 From: Ingo Molnar To: "Frank Ch. Eigler" Cc: Frederic Weisbecker , Mel Gorman , LKML , SystemTap Subject: Re: systemtap broken by removal of register_timer_hook Message-ID: <20130410112456.GA29886@gmail.com> References: <20130403075017.GA2534@suse.de> <20130403144428.GA15432@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130403144428.GA15432@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1167 Lines: 34 * Frank Ch. Eigler wrote: > Hi - > > On Wed, Apr 03, 2013 at 02:49:53PM +0200, Frederic Weisbecker wrote: > > > Sounds good, would you like to propose a version? We are also > > interested in a timer tick event tracepoint for dynticks debugging. > > How about this? > > Author: Frank Ch. Eigler > Date: Wed Apr 3 10:35:21 2013 -0400 > > profiling: add profile_tick tracepoint > > Commit ba6fdda4 removed the timer_hook mechanism for modules to listen > to profiling timer ticks (without having to set up more complicated > perf mechanisms). To reduce the impact on out-of-tree users, a > TRACE_EVENT-flavoured tracepoint is added in its place. Tested with > perf and systemtap. I'd suggest mentioning SystemTap here as the driving motivation. SystemTap triggered a generic kernel improvement here, no need to hide its identity! Thanks, Ingo -- 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/