From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francis Moreau Subject: Re: how to get a kernel callgraph starting from a syscall Date: Thu, 21 Apr 2011 22:07:08 +0200 Message-ID: References: <4DB04BF3.8080206@gmail.com> <4DB08A5B.3060706@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from mail-px0-f179.google.com ([209.85.212.179]:61687 "EHLO mail-px0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751557Ab1DUUHJ (ORCPT ); Thu, 21 Apr 2011 16:07:09 -0400 Received: by pxi2 with SMTP id 2so45191pxi.10 for ; Thu, 21 Apr 2011 13:07:08 -0700 (PDT) In-Reply-To: <4DB08A5B.3060706@gmail.com> Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: David Ahern Cc: linux-perf-users@vger.kernel.org On Thu, Apr 21, 2011 at 9:49 PM, David Ahern wrote: > > You want the individual samples? if so, perf script dumps them and you > can see the callchain for each sys_read. > hmm, I don't see what you mean by individual samples. I don't think sampling can help in my case (tracing the callchain of one syscall). Could you give me an example of what you have in mind ? Thanks -- Francis