Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758546Ab0GUOXT (ORCPT ); Wed, 21 Jul 2010 10:23:19 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:52080 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758474Ab0GUOXO (ORCPT ); Wed, 21 Jul 2010 10:23:14 -0400 Date: Wed, 21 Jul 2010 11:22:51 -0300 From: Arnaldo Carvalho de Melo To: Srikar Dronamraju Cc: Christoph Hellwig , Peter Zijlstra , Ingo Molnar , Steven Rostedt , Randy Dunlap , Linus Torvalds , Naren A Devaiah , Ananth N Mavinakayanahalli , Masami Hiramatsu , Oleg Nesterov , Mark Wielaard , Mathieu Desnoyers , LKML , Jim Keniston , Frederic Weisbecker , "Frank Ch. Eigler" , Andrew Morton , "Paul E. McKenney" Subject: Re: [PATCHv9 2.6.35-rc4-tip 0/13] Uprobes Patches: Message-ID: <20100721142251.GB17631@ghostprotocols.net> References: <20100712103214.27491.15142.sendpatchset@localhost6.localdomain6> <20100720041938.GA28533@infradead.org> <20100720063805.GA19375@linux.vnet.ibm.com> <20100720210358.GA17631@ghostprotocols.net> <20100721024200.GC19375@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100721024200.GC19375@linux.vnet.ibm.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.20 (2009-08-17) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2271 Lines: 44 Em Wed, Jul 21, 2010 at 08:12:00AM +0530, Srikar Dronamraju escreveu: > > Em Tue, Jul 20, 2010 at 12:08:05PM +0530, Srikar Dronamraju escreveu: > > > > A minor note on perf probe -S output: This seems to include a lot of > > > > T.456 or similar labels, which from my recollection are gcc internal > > > > things. It would be good to filter those out as they aren't quite > > > > useful and just fill up the list. > > > Okay .. will take a look. Offhand I dont know about the T.456 > > > labels, so I will google and see if its possible for us to identify if > > > its a t.456 label. However if you know how to identify a t456 label > > > from normal functions, then it would be great. > > We may have some hint on the symtab, having access to one of those files > > to look at its symtab will help. > > I tried searching for t.456 gcc labels in google. I dont think I found > anything interesting. Are we looking at not listing symbols that end > with @plt? Can you please list an example t.456 label. Also any pointers to > where I can find more information on the same would be very useful. I guess this is what he means: [acme@doppio linux-2.6-tip]$ grep ' [TtWw] .\+\.' /proc/kallsyms | head -5 ffffffff81000646 t trace_kmalloc.clone.0 ffffffff810006ac t create_dev.clone.0 ffffffff81006ae4 t test_ti_thread_flag.clone.0 ffffffff8100a388 t trace_power_start.clone.0 ffffffff8100ad8d t user_regset_copyin.clone.0 [acme@doppio linux-2.6-tip]$ readelf -s ../build/v2.6.35-rc5-tip+/vmlinux | grep ' FUNC .\+\.' | head -5 165: ffffffff81000646 101 FUNC LOCAL DEFAULT 1 trace_kmalloc.clone.0 180: ffffffff810006ac 44 FUNC LOCAL DEFAULT 1 create_dev.clone.0 438: ffffffff81006ae4 22 FUNC LOCAL DEFAULT 1 test_ti_thread_flag.clone 510: ffffffff81ae5c40 136 FUNC LOCAL DEFAULT 22 e820_end_pfn.clone.0 750: ffffffff8100a388 65 FUNC LOCAL DEFAULT 1 trace_power_start.clone.0 [acme@doppio linux-2.6-tip]$ Or at least those are the ones with dots here. - Arnaldo -- 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/