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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_2 autolearn=ham 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 4564EC4361B for ; Mon, 14 Dec 2020 16:18:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 09FF322583 for ; Mon, 14 Dec 2020 16:18:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2501936AbgLNQQQ (ORCPT ); Mon, 14 Dec 2020 11:16:16 -0500 Received: from mail.kernel.org ([198.145.29.99]:51456 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2440208AbgLNQPz (ORCPT ); Mon, 14 Dec 2020 11:15:55 -0500 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 240AF22582; Mon, 14 Dec 2020 16:15:14 +0000 (UTC) Date: Mon, 14 Dec 2020 11:15:12 -0500 From: Steven Rostedt To: Anatoly Pugachev Cc: Linux Kernel list , Sparc kernel list , Ingo Molnar Subject: Re: [sparc64] ftrace: kernel startup-tests unaligned access Message-ID: <20201214111512.415717ac@gandalf.local.home> In-Reply-To: References: X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; 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-kernel@vger.kernel.org On Mon, 14 Dec 2020 18:59:02 +0300 Anatoly Pugachev wrote: > Hello! > > Enabled ftrace startup tests on a sparc64 test VM/LDOM: > > $ diff -u <(gzip -dc ~/dmesg/config-5.10.0.gz) <(gzip -dc /proc/config.gz) > --- /dev/fd/63 2020-12-14 16:19:38.239372599 +0300 > +++ /dev/fd/62 2020-12-14 16:19:38.235372433 +0300 > @@ -2842,7 +2842,10 @@ > # CONFIG_TRACEPOINT_BENCHMARK is not set > # CONFIG_RING_BUFFER_BENCHMARK is not set > # CONFIG_TRACE_EVAL_MAP_FILE is not set > -# CONFIG_FTRACE_STARTUP_TEST is not set > +CONFIG_FTRACE_SELFTEST=y > +CONFIG_FTRACE_STARTUP_TEST=y > +CONFIG_EVENT_TRACE_STARTUP_TEST=y > +# CONFIG_EVENT_TRACE_TEST_SYSCALLS is not set > # CONFIG_RING_BUFFER_STARTUP_TEST is not set > # CONFIG_PREEMPTIRQ_DELAY_TEST is not set > # CONFIG_KPROBE_EVENT_GEN_TEST is not set > > > Got the following results with kernel boot logs: > > Dec 14 13:48:15 kernel: clocksource: jiffies: mask: 0xffffffff > max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns > Dec 14 13:48:15 kernel: futex hash table entries: 65536 (order: 9, > 4194304 bytes, linear) > Dec 14 13:48:15 kernel: Running postponed tracer tests: > Dec 14 13:48:15 kernel: Testing tracer function: > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > trace_function+0x40/0x140 > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a24] > trace_function+0x44/0x140 > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > trace_function+0x40/0x140 > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a24] > trace_function+0x44/0x140 > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > trace_function+0x40/0x140 Does sparc64 require 8 byte alignment for 8 byte words? -- Steve