From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AAD5C433ED for ; Fri, 14 May 2021 14:01:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 683E761465 for ; Fri, 14 May 2021 14:01:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234006AbhENOCL (ORCPT ); Fri, 14 May 2021 10:02:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:59802 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232467AbhENOCL (ORCPT ); Fri, 14 May 2021 10:02:11 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4E60A61463; Fri, 14 May 2021 14:00:59 +0000 (UTC) Date: Fri, 14 May 2021 10:00:57 -0400 From: Steven Rostedt To: Tzvetomir Stoyanov Cc: Linux Trace Devel Subject: Re: [PATCH v3 2/2] trace-cmd: Trace timesync to find pids that map vCPUs Message-ID: <20210514100057.4d266a79@gandalf.local.home> In-Reply-To: References: <20210513204315.1206204-1-rostedt@goodmis.org> <20210513204315.1206204-3-rostedt@goodmis.org> <20210514091205.6b269474@gandalf.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org On Fri, 14 May 2021 16:38:29 +0300 Tzvetomir Stoyanov wrote: > > What am I missing? > > cid is not updated between both checks, it always fails - even though > read_qemu_guests() may succeed to find the VM with that name. Ah, that's what I was missing. :-p For some reason I thought it set the *cid, but I see that's obviously not the case. You are correct, the second check is not needed because the code to set *cid is right after it. Thanks for pointing that out. -- Steve