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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_HIGH 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 19BC6C4321D for ; Fri, 24 Aug 2018 11:48:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 87C2921523 for ; Fri, 24 Aug 2018 11:48:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="bYVYvuEQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 87C2921523 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727360AbeHXPWS (ORCPT ); Fri, 24 Aug 2018 11:22:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:50574 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726513AbeHXPWS (ORCPT ); Fri, 24 Aug 2018 11:22:18 -0400 Received: from devbox (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (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 1A79120880; Fri, 24 Aug 2018 11:47:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1535111279; bh=+bpiNW5ZK6tqU+ofTUHm1Lv9gmY9NeMuvaNoHf3mqpM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=bYVYvuEQOzTaCeZeZCBnM0XU4lJH3hksoT9JxsHaVGB0uHNGDhsMcmUbKTZ/RasXR yhzZX0Vi2W+1lbhPEIccPki0GavMVhqioKW7Sq8h5EVWOOPpzHf2X4xf3Upbnh4oTL w2CLAaxKvyyJborF8laWjKauAUELsJknuCOE7zLQ= Date: Fri, 24 Aug 2018 20:47:56 +0900 From: Masami Hiramatsu To: Masami Hiramatsu Cc: Stephen Rothwell , "Steven Rostedt (VMware)" , Linux-Next Mailing List , Linux Kernel Mailing List Subject: Re: linux-next: build warnings from the build of Linus' tree Message-Id: <20180824204756.e787765461975cd1e27502dc@kernel.org> In-Reply-To: <20180824172053.20fa197294f51496dcec5605@kernel.org> References: <20180824133206.4218c2e5@canb.auug.org.au> <20180824172053.20fa197294f51496dcec5605@kernel.org> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 24 Aug 2018 17:20:53 +0900 Masami Hiramatsu wrote: > On Fri, 24 Aug 2018 13:32:06 +1000 > Stephen Rothwell wrote: > > > Hi all, > > > > After merging the origin tree, today's linux-next build (powerpc > > allyesconfig) produced these warnings: > > > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_selftest_dynamic.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_kprobe_selftest.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_clock.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/ftrace.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/ring_buffer.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/ring_buffer_benchmark.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_output.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_seq.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_stat.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_printk.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/tracing_map.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_sched_switch.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_functions.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_preemptirq.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_irqsoff.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_sched_wakeup.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_hwlat.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_nop.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_stack.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_functions_graph.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/blktrace.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_events.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_export.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_syscalls.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_event_perf.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_events_filter.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_events_trigger.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_events_hist.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/bpf_trace.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_kprobe.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/power-traces.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/rpm-traces.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_kdb.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_probe.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_uprobe.o' being placed in section `.data..LPBX1' > > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_benchmark.o' being placed in section `.data..LPBX1' > > > > Maybe introduced by commit > > > > 6b7dca401cb1 ("tracing: Allow gcov profiling on only ftrace subsystem") > > > > I am guessing, but that is the only new thing that affects all of > > kernel/trace ... > > Yes, I agree. But I just followed Documentation/dev-tools/gcov.rst > to enable profiling in kernel/trace. Hmm, doesn't ppc64 support > GCOV_PROFILE? (But as far as I can see, ARCH_HAS_GCOV_PROFILE_ALL > is enabled in arch/powerpc/Kconfig) > > Anyway, I'll try to reproduce it. gcc-7.3.0 cross build ld shows below warnings. MODPOST vmlinux.o /opt/gcc-7.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'. KSYM .tmp_kallsyms1.o /opt/gcc-7.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'. KSYM .tmp_kallsyms2.o /opt/gcc-7.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'. KSYM .tmp_kallsyms3.o LD vmlinux /opt/gcc-7.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash'. But it seems another warning, and I couldn't see your warnings. Could you tell me your gcc version? Thank you, -- Masami Hiramatsu