Re: Clarification on support of arm32 with kernel4.1 for oprofile 1.2.0

Hello Team,

opreport on oprofile-1.2.0 is throwing the following error.

./opreport -l /bin/abc

Using /lib/oprofile/bin/oprofile_data/samples/ for samples directory.

error: no sample files found: profile specification too strict ?


same was working fine in  oprofile-0.9.9.


I have added all the dependencies and kernel configs .

Please share your thoughts on this.


Thanks and Regards,

Vinoth Natarajan.


On Tue, Mar 20, 2018 at 9:44 PM, Michael Petlan <[email protected]> wrote:

> Hi Vinoth!
>
> This looks good, your machine's PMU and kernel seems to be OK.
>
> You need to do `make install` to have all the sub-tools installed
> in $PATH. Your operf wants to run `ophelp` to find the default
> event to be used. It does not find it in path, so it fails. I'd
> recommend to do the full installation process. You can specify
> various things to ./configure (target prefixes, etc.).
>
> Cheers,
> Michael
>
> On Tue, 20 Mar 2018, Vinoth Natarajan wrote:
> > Hello Michael,
> >
> > Good Day!!!
> >
> > Tried running the oprofile-1.2.0 on different ARM hardware which
> supports PMU.
> > But when we try to run operf binary,it show the following error.
> >
> > # ./operf --system-wide
> > sh: /home/oprofile/bin/ophelp: not found
> > Unable to find info for event CPU_CYCLES
> > I have tried in internet about this error, No luck.
> > Could you please let us know about this error.
> >
> > Note :-
> > Following are the kernel configs related to PERF enabled on this 4.1
> kernel.
> > CONFIG_HAVE_PERF_EVENTS=y
> > CONFIG_PERF_USE_VMALLOC=y
> > CONFIG_PERF_EVENTS=y
> > # CONFIG_DEBUG_PERF_USE_VMALLOC is not set
> > CONFIG_HAVE_PERF_REGS=y
> > CONFIG_HAVE_PERF_USER_STACK_DUMP=y
> > # CONFIG_PCIEASPM_PERFORMANCE is not set
> > CONFIG_HW_PERF_EVENTS=y
> >
> >
> > Code given from you is able to get the expected output from the new
> hardware.
> >
> > ioctl(fd, PERF_EVENT_IOC_RESET, 0);
> > ioctl(fd, PERF_EVENT_IOC_ENABLE, 0);
> >
> > printf("Measuring instruction count for this printf\n");
> >
> > ioctl(fd, PERF_EVENT_IOC_DISABLE, 0);
> > read(fd, &count, sizeof(long long));
> >
> > printf("Used %lld instructions\n", count);
> > # ./hello_test_oprofile.o
> > Measuring instruction count for this printf
> > Used 3660 instructions
> >
> > On Tue, Feb 20, 2018 at 11:11 AM, Vinoth Natarajan <
> [email protected]> wrote:
> >       Hello Michael,
> > Thanks so much for your valuable support.
> >
> > For time being am planning to use oprofile-0.9.9 version itself.
> > Could you please share the test cases you have used to test the oprofile
> functionalities to its full potential.
> >
> > Kindly share all the test cases you have used, so that i dont miss on
> any test case/functionality of oprofile while i test.
> >
> > Thanks in advance!!!
> >
> > Thanks and Regards,
> > Vinoth Natarajan.
> >
>

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