From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from THUNK.ORG ([69.25.196.29]:43845 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753618AbZBWWmF (ORCPT ); Mon, 23 Feb 2009 17:42:05 -0500 Date: Mon, 23 Feb 2009 17:41:41 -0500 From: Theodore Tso Subject: Re: [PATCH] tracing/markers: make markers select tracepoints Message-ID: <20090223224141.GI19739@mit.edu> References: <1235304876.4632.10.camel@laptop> <20090222122424.GA9951@redhat.com> <1235387487.4645.28.camel@laptop> <20090223154404.GA30147@redhat.com> <1235406159.4645.366.camel@laptop> <20090223171032.GA2566@redhat.com> <20090223183220.GE19739@mit.edu> <1235427419.4645.959.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1235427419.4645.959.camel@laptop> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: Peter Zijlstra Cc: Steven Rostedt , "Frank Ch. Eigler" , Ingo Molnar , Randy Dunlap , Frederic Weisbecker , linux-kernel@vger.kernel.org, zippel@linux-m68k.org, linux-kbuild@vger.kernel.org On Mon, Feb 23, 2009 at 11:16:59PM +0100, Peter Zijlstra wrote: > > We're working on adding arguments to the function/graph tracer, it would > fit all your above requirements and doesn't need any source modification > to boot. *Excellent*. I would love to have that funtionality. How do you plan to make available complex data structures (i.e., suppose I want inode->i_ino printed out)? I assume this will require writing some "easy to generate" glue code that would presumably be some kind of kernel module? That doesn't bother me (after all that's what SystemTap does), as long as generation of the glue code can be largely automated ---- so that you can take something approximately like a DTrace or SystemTap script, and with some perl or python helper, translate it into glue code that gets compiled into a kernel module. Is something like that what you have in mind? - Ted