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Date: Fri, 14 Feb 2014 10:43:06 +0100
From: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
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To: Naresh Kamboju <naresh.kamboju@linaro.org>,
        Arnd Bergmann <arnd.bergmann@linaro.org>, fhrbata@redhat.com,
        Paul Larson <paul.larson@canonical.com>
CC: ltp-list <ltp-list@lists.sourceforge.net>,
        ltp-coverage <ltp-coverage@lists.sourceforge.net>,
        Mark Brown <mark.brown@linaro.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Deepak Saxena <dsaxena@linaro.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
        Milosz Wasilewski <milosz.wasilewski@linaro.org>
Subject: Re: [LTP] How to get the Linux kernel coverage data on ARM arch when
 I run LTP test?
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On 14.02.2014 10:02, Naresh Kamboju wrote:
> root@linaro-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@linaro-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

More information on lcov can be found on the page behind the second URL
your quoted in your mail.


Regards,
  Peter Oberparleiter

-- 
Peter Oberparleiter
Linux on System z Development - IBM Germany

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