linux-kernel - Re: [PATCH 1/5] selftests: Add futex functional tests

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Date:	Tue, 12 May 2015 10:47:14 -0600
From:	Shuah Khan <shuahkh@....samsung.com>
To:	Darren Hart <dvhart@...ux.intel.com>,
	Cyril Hrubis <chrubis@...e.cz>
CC:	linux-api@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	John Stultz <john.stultz@...aro.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Davidlohr Bueso <dave@...olabs.net>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH 1/5] selftests: Add futex functional tests

On 05/12/2015 10:10 AM, Darren Hart wrote:
> On 5/12/15, 3:02 AM, "Cyril Hrubis" <chrubis@...e.cz> wrote:
> 
>> Hi!
>>> I'm happy to do that, but I would like to make sure I'm doing the right
>>> thing.
>>
>> The right thing here is to add -pthread to CFLAGS which sets both flags
>> for preprocessor and linker (see man gcc).
> 
> Hi Cyril,
> 
> Thanks. I read that, and mentioned it, but my concern with -pthread in the
> CFLAGS and LDFLAGS is that it is a non-standard compiler flag. I
> understand we have a number of gcc-isms in our build - but do we want to
> add more?
> 
> I'm also struggling to find any kind of prescribed documentation on this
> beyond the short blurb in the gcc man page which describes what this
> option does, but not when to use it. I'll need something concrete to
> justify changes to testcase Makefiles to Shuah.
> 
> Unfortunately, all these options are functional for me, while some are not
> for Shuah, so I'm currently having to rely on documentation which seems
> pretty sparse.
> 

Hi Daren,

My goals are really simple. make kselftest doesn't break. All tests
compile and run and install or fail gracefully when dependencies aren't
met. As long as the above are met, I don't really worry about what
individual test Makefiles do.

thanks,
-- Shuah

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