From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22990 invoked by alias); 1 Dec 2005 01:39:53 -0000 Received: (qmail 22983 invoked by uid 22791); 1 Dec 2005 01:39:52 -0000 X-Spam-Status: No, hits=-1.5 required=5.0 tests=AWL,BAYES_00,DNS_FROM_RFC_POST X-Spam-Check-By: sourceware.org Received: from fmr20.intel.com (HELO orsfmr005.jf.intel.com) (134.134.136.19) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 01 Dec 2005 01:39:51 +0000 Received: from orsfmr101.jf.intel.com (orsfmr101.jf.intel.com [10.7.209.17]) by orsfmr005.jf.intel.com (8.12.10/8.12.10/d: major-outer.mc,v 1.1 2004/09/17 17:50:56 root Exp $) with ESMTP id jB11dnfK028063 for ; Thu, 1 Dec 2005 01:39:49 GMT Received: from orsmsxvs041.jf.intel.com (orsmsxvs041.jf.intel.com [192.168.65.54]) by orsfmr101.jf.intel.com (8.12.10/8.12.10/d: major-inner.mc,v 1.2 2004/09/17 18:05:01 root Exp $) with SMTP id jB11dhYW005467 for ; Thu, 1 Dec 2005 01:39:49 GMT Received: from orsmsx331.amr.corp.intel.com ([192.168.65.56]) by orsmsxvs041.jf.intel.com (SAVSMTP 3.1.7.47) with SMTP id M2005113017394910086 for ; Wed, 30 Nov 2005 17:39:49 -0800 Received: from orsmsx409.amr.corp.intel.com ([192.168.65.58]) by orsmsx331.amr.corp.intel.com with Microsoft SMTPSVC(6.0.3790.211); Wed, 30 Nov 2005 17:39:49 -0800 X-MIMEOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Subject: RE: jprobe question Date: Thu, 01 Dec 2005 01:39:00 -0000 Message-ID: <44BDAFB888F59F408FAE3CC35AB47041027749AD@orsmsx409> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: jprobe question Thread-Index: AcX1FkqCAsXTDr0nT6ygfsW3UeKViQAOTxWQACfE1KAACD/8cAAB4vCQ From: "Keshavamurthy, Anil S" To: "Zhang, Yanmin" Cc: , "Mao, Bibo" X-OriginalArrivalTime: 01 Dec 2005 01:39:49.0338 (UTC) FILETIME=[1E0773A0:01C5F618] X-Scanned-By: MIMEDefang 2.52 on 10.7.209.17 X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2005-q4/txt/msg00307.txt.bz2 >[YM] unwind costs too much time because it will create a=20 >switch_stack and unwind frame on the top of the stack. Anyway,=20 >I will work out a new patch using unwind. Yes, I understand the unwind cost, but at the=20 same time hate quick and dirty way to store bsp=20 in the pt_reg reserved area. For now don't worry about the unwind cost. Let's=20 push saving bsp patch separately later and at that time we can optimize jprobes. Also more comment before you cook up the new patch,=20 some people on ia64 mailing list don't like adding=20 asm volatile ("....") instruction in the C file. If possible avoid this asm in the C file. Post your new patch onto Ia64 mailing list and Cc'ing systemtap. -Anil