linux-kernel - Re: [PATCH ftrace/core v6 5/5] kselftest, ftrace: Add ftrace IPMODIFY flag test

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Date:	Tue, 25 Nov 2014 07:44:39 -0700
From:	Shuah Khan <shuahkh@....samsung.com>
To:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
CC:	Steven Rostedt <rostedt@...dmis.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Seth Jennings <sjenning@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Petr Mladek <pmladek@...e.cz>,
	Vojtech Pavlik <vojtech@...e.cz>,
	Namhyung Kim <namhyung@...nel.org>,
	Miroslav Benes <mbenes@...e.cz>,
	Ingo Molnar <mingo@...nel.org>,
	Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH ftrace/core v6 5/5] kselftest, ftrace: Add ftrace IPMODIFY
 flag test

On 11/25/2014 07:42 AM, Shuah Khan wrote:
> On 11/24/2014 06:23 PM, Masami Hiramatsu wrote:
>> (2014/11/25 1:18), Shuah Khan wrote:
>>> On 11/24/2014 07:11 AM, Masami Hiramatsu wrote:
>>>> (CC'ed Shuah, since this is related to kselftest)
>>>>
>>>>
>>>> So, if your server directory is mounted with noexec, it's an environmental
>>>> problem. I guess you can not build any kernel drivers on that testbox, can you?
>>>>
>>>> Anyway, this gives us a good question, "should test binaries be made by
>>>> server or client(testbox) environment?" This ipmodify driver is a binary
>>>> and it should be built with the kernel binary (by server) I think.
>>>> But yes, I missed the Makefile didn't allow that (this always referred
>>>> installed running kernel builddir).
>>>>
>>>> I hope to have CONFIG_KSELFTEST_BINARIES for Kconfig, or make prep_kselftest
>>>> target to build these binaries with kernel...
>>>>
>>>> Shuah, what would you think about this?
>>>
>>> I am working on patch series to add an install target to the
>>> main kernel makefile, so these tests can be built and installed
>>> on a target just like we do with kernel and modules. I hope to
>>> get this in 3.19 or definitely into 3.20
>>>
>>> This probably will help address the problem you are seeing.
>>> Install target is needed for qemu type environments as well.
>>
>> Yes, that is what we need for this test case!
>> Please CC to me when sending the series. I'd like to try and
>> know how it works :)
>>
> 
> Good. Please take a look at this thread and give it a try. Please
> give me feedback as well. This is the first step to get the install
> feature added and then we can refine it at the selftests level as
> needed.
> 
> https://lkml.org/lkml/2014/11/11/851
> 

Forgot to mention I didn't include ftrace in this first series for
install, planning to add it in my next round of patches. I have the
code ready for to do that.

-- Shuah


-- 
Shuah Khan
Sr. Linux Kernel Developer
Samsung Research America (Silicon Valley)
shuahkh@....samsung.com | (970) 217-8978
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