linux-kernel - Re: ftrace breaks sparc64 build

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Message-Id: <49631BF0.76E4.0078.0@novell.com>
Date:	Tue, 06 Jan 2009 07:53:04 +0000
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	"Sam Ravnborg" <sam@...nborg.org>,
	"Al Viro" <viro@...IV.linux.org.uk>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"Ingo Molnar" <mingo@...e.hu>, <rostedt@...dmis.org>,
	"Steven Rostedt" <srostedt@...hat.com>,
	"LKML" <linux-kernel@...r.kernel.org>,
	"sparclinux" <sparclinux@...r.kernel.org>
Subject: Re: ftrace breaks sparc64 build

>On Mon, Jan 05, 2009 at 07:48:44PM +0000, Al Viro wrote:
>> On Mon, Jan 05, 2009 at 07:19:22PM +0100, Sam Ravnborg wrote:
>> > With an allmodconfig build on sparc and sparc64 I started
>> > to see warnings that become propagated to errors by -Werror.
>> 
>> While we are at it, sparc32 allmodconfig is broken by
>> commit 9bb482476c6c9d1ae033306440c51ceac93ea80c
>> Author: Jan Beulich <jbeulich@...ell.com>
>> Date:   Tue Dec 16 11:30:08 2008 +0000
>> 
>>     allow stripping of generated symbols under CONFIG_KALLSYMS_ALL
>> 
>> Results in
>> sparc-linux-objcopy: not stripping symbol `__ksymtab_strings' because it is named in a relocation
>> sparc-linux-objcopy: not stripping symbol `__crc_per_cpu__softirq_work_list' because it is named in a relocation
>> sparc-linux-objcopy: not stripping symbol `__initcall_end' because it is named in a relocation
>> sparc-linux-objcopy: not stripping symbol `__setup_end' because it is named in a relocation
>> sparc-linux-objcopy: not stripping symbol `__setup_start' because it is named in a relocation
>> sparc-linux-objcopy: not stripping symbol `__initcall_start' because it is named in a relocation
>> make: *** [.tmp_vmlinux1.stripped] Error 1

The __crc_... reference is definitely bogus - none should survive with the
new .c->.o rule. Could you find out what object file they originate from?

The others look like a tools side behavioral difference, as I never saw any
such. Is this problem sparc32-specific (I tested x86 and ia64 only)? What's
the binutils version used?

Jan

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