Re: related to fixing depreciated api

[Shuah Khan]

On 12/14/20 9:42 AM, Jeffrin Jose T wrote:
> hello,
>
> i have worked on to  fix  depreciated api issue from
> tools/testing/selftests/intel_pstate/aerf.c
>
> i met with the following error related...
>
> --------------x------------------x----------------->
> $pwd
> /home/jeffrin/UP/linux-kselftest/tools/testing/selftests/intel_pstate
> $make
> gcc  -Wall -D_GNU_SOURCE    aperf.c /home/jeffrin/UP/linux-
> kselftest/tools/testing/selftests/kselftest_harness.h
> /home/jeffrin/UP/linux-kselftest/tools/testing/selftests/kselftest.h -
> lm -o /home/jeffrin/UP/linux-
> kselftest/tools/testing/selftests/intel_pstate/aperf
> aperf.c: In function ‘main’:
> aperf.c:58:2: warning: ‘ftime’ is deprecated [-Wdeprecated-
> declarations]
>     58 |  ftime(&before);
>        |  ^~~~~
> In file included from aperf.c:9:
> /usr/include/x86_64-linux-gnu/sys/timeb.h:39:12: note: declared here
>     39 | extern int ftime (struct timeb *__timebuf)
>        |            ^~~~~
> aperf.c:67:2: warning: ‘ftime’ is deprecated [-Wdeprecated-
> declarations]
>     67 |  ftime(&after);
>        |  ^~~~~
> In file included from aperf.c:9:
> /usr/include/x86_64-linux-gnu/sys/timeb.h:39:12: note: declared here
>     39 | extern int ftime (struct timeb *__timebuf)
>        |            ^~~~~
> $
> ----------------x---------------x---------------------->
>
>
> from ftime manual  i found that it is depreciated...
>
> This  function is deprecated, and will be removed in a future version
> of the GNU C library.  Use clock_gettime(2) instead.
>
>
> now clock_gettime  gives  new data structure.
>
>   struct timespec {
>                 time_t   tv_sec;        /* seconds */
>                 long     tv_nsec;       /* nanoseconds */
>             };
>
>
> i worked on with the new data structure and some errors that came
> along.
> typical final output looks good but  values of runtime and typical
> frequency
> does not look normal during "sudo bash run.sh".
>
> output of "git diff" and  a  portion of output of   "sudo bash run.sh".
> is attached.

Please send a proper patch to fix intel_pstate to use clock_gettime.

thanks,
-- Shuah