linux-kernel - Re: [GIT PULL v2] tracing/kprobes: v1 + two fixes

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Message-ID: <4A96B9BC.7080800@redhat.com>
Date:	Thu, 27 Aug 2009 12:52:12 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Li Zefan <lizf@...fujitsu.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [GIT PULL v2] tracing/kprobes: v1 + two fixes

Ingo Molnar wrote:
>
> * Masami Hiramatsu<mhiramat@...hat.com>  wrote:
>
>>
>>
>> Ingo Molnar wrote:
>>>
>>> * Frederic Weisbecker<fweisbec@...il.com>   wrote:
>>>
>>>> Ingo,
>>>>
>>>> This v2 can be either pulled after tracing/kprobes (the v1) or can
>>>> be pulled alone, it is based on the previous one and addresses
>>>> reviews from Li Zefan.
>>>>
>>>> Thanks,
>>>> Frederic.
>>>>
>>>> The following changes since commit 24851d2447830e6cba4c4b641cb73e713f312373:
>>>>     Frederic Weisbecker (1):
>>>>           tracing/kprobes: Dump the culprit kprobe in case of kprobe recursion
>>>>
>>>> are available in the git repository at:
>>>>
>>>>     git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git \
>>>> 	tracing/kprobes-2
>>>>
>>>> Frederic Weisbecker (2):
>>>>         tracing: Restore the const qualifier for field names and types definition
>>>>         tracing: Remove unneeded pointer casts
>>>>
>>>>    include/linux/ftrace_event.h  |    6 +++---
>>>>    kernel/trace/trace_events.c   |    4 ++--
>>>>    kernel/trace/trace_syscalls.c |    8 ++++----
>>>>    3 files changed, 9 insertions(+), 9 deletions(-)
>>>
>>> I've pulled it into a staging branch (not yet in tip:master either
>>> and not yet on the road to upstream either), thanks guys!
>>>
>>> I have done some brief testing. One hickup is this build failure on
>>> x86, caused by the kprobes instruction decoder self-test:
>>>
>>>      CHK     include/linux/compile.h
>>>      TEST    posttest
>>>    Error: 41001024:        a1 08 30 c9 41          mov
>>>    0x41c93008,%eax
>>>    Error: objdump says 5 bytes, but insn_get_length() says 9 (attr:40000)
>>
>> Oops, it should be fixed. Hmm, it seems that addr_bytes or
>> opnd_bytes is broken, would you did a cross compiling? (compiling
>> x86-32 on x86-64)
>
> yeah, i did that.

I see, so current selftest is not enough supporting the cross compiling yet.
I think I can fix that. Could you tell me how you did that? make ARCH=i386 ?

Thank you,

>
> 	Ingo

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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