| Message ID | CA+G9fYuT4TSs=3j6K9zztsTgFNVp2YG6JT-2Q_L==1P5G+SBew@mail.gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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
On 14 February 2014 15:13, Peter Oberparleiter <oberpar@linux.vnet.ibm.com> wrote: > 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 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. Peter Oberparleiter, Thank you very much for your help. Best regards Naresh Kamboju > > 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 >
On 3 March 2014 20:51, Michal Simek <monstr@monstr.eu> wrote: > HI, > > > 2014-02-18 15:30 GMT+01:00 Naresh Kamboju <naresh.kamboju@linaro.org>: > >> On 14 February 2014 15:13, Peter Oberparleiter >> <oberpar@linux.vnet.ibm.com> wrote: >> > 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 >> >> 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 >
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig index d4da55d..fceac85 100644 --- a/kernel/gcov/Kconfig +++ b/kernel/gcov/Kconfig @@ -35,7 +35,7 @@ config GCOV_KERNEL config GCOV_PROFILE_ALL bool "Profile entire Kernel" depends on GCOV_KERNEL - depends on SUPERH || S390 || X86 || PPC || MICROBLAZE + depends on SUPERH || S390 || X86 || PPC || MICROBLAZE || ARM default n ---help--- This options activates profiling for the entire kernel.