linux-kernel - Re: [LTP] How to get the Linux kernel coverage data on ARM arch when I run LTP test?

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Message-ID: <CA+G9fYtFOPf6MYBKiOyHwSwZx5bHZWt3=Hzwsjrh5pvSarT+fw@mail.gmail.com>
Date:	Fri, 4 Apr 2014 16:30:31 +0530
From:	Naresh Kamboju <naresh.kamboju@...aro.org>
To:	Michal Simek <monstr@...str.eu>
Cc:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>,
	Milosz Wasilewski <milosz.wasilewski@...aro.org>,
	Arnd Bergmann <arnd.bergmann@...aro.org>, fhrbata@...hat.com,
	Paul Larson <paul.larson@...onical.com>,
	ltp-list <ltp-list@...ts.sourceforge.net>,
	ltp-coverage <ltp-coverage@...ts.sourceforge.net>,
	Mark Brown <mark.brown@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Deepak Saxena <dsaxena@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [LTP] How to get the Linux kernel coverage data on ARM arch when
 I run LTP test?

On 3 March 2014 20:51, Michal Simek <monstr@...str.eu> wrote:
> HI,
>
>
> 2014-02-18 15:30 GMT+01:00 Naresh Kamboju <naresh.kamboju@...aro.org>:
>
>> On 14 February 2014 15:13, Peter Oberparleiter
>> <oberpar@...ux.vnet.ibm.com> wrote:
>> > On 14.02.2014 10:02, Naresh Kamboju wrote:
>> >> root@...aro-developer:/tmp/linux-linaro-3.13-2014.01# gcov
>> >> kernel/gcov/base.c -o
>> >>  /sys/kernel/debug/gcov/tmp/linux-linaro-3.13-2014.01/kernel/gcov/
>> >> File 'kernel/gcov/base.c'
>> >> Lines executed:43.18% of 44
>> >> Creating 'base.c.gcov'
>> >>
>> >> root@...aro-developer:/tmp/linux-linaro-3.13-2014.01#
>> >>
>> >> The above experiment gives coverage of a single file base.c when i run
>> >> gcov manually.
>> >> Is there any way to get Linux kernel coverage of all files after
>> >> running LTP test cases ?
>> >
>> > 1. Reset coverage data: lcov -z
>> > 2. Run LTP (or any other test case)
>> > 3. Capture coverage data: lcov -c -o coverage.info
>> > 4. Generate HTML output: genhtml coverage.info -o out
>> > 5. View HTML output: <browser> out/index.html
>>
>> It is working !!!
>> LTP executed on linux-linaro build on vexpress-tc2 target.
>> Please find results obtained
>> http://people.linaro.org/~naresh.kamboju/linux-linaro-coverage-by-ltp/
>>
>> The plan is to run all linaro test suite and to get coverage date.
>
>
> Have you already run it? Are these test cases available?


I have tested LTP on vexpress-tc2. I did not try all test suites.
We ( In Linaro) Linaro Test Suites is a package that contains test
suites that can be run in LAVA.
http://releases.linaro.org/14.03/components/platform/linaro-test-suites

>
> Thanks,
> Michal
>
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