linux-kernel - related to fixing depreciated api

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Message-ID: <e479c654b6ca08057bf18a4e1c1d1ed3cdf8fdc8.camel@rajagiritech.edu.in>
Date:   Mon, 14 Dec 2020 22:12:14 +0530
From:   Jeffrin Jose T <jeffrin@...agiritech.edu.in>
To:     Shuah Khan <shuah@...nel.org>
Cc:     "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: related to fixing  depreciated  api

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.



-- 
software engineer
rajagiri school of engineering and technology - autonomous



View attachment "diff-or.txt" of type "text/plain" (2317 bytes)

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