perf: arch/x86/tests/amd-ibs-via-core-pmu.c:47:25: error: 'pmus' undeclared

[Naresh Kamboju]

Following warnings and errors noticed while building perf x86_64,

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

Build log:
---------
arch/x86/tests/amd-ibs-via-core-pmu.c: In function 'test__amd_ibs_via_core_pmu':
arch/x86/tests/amd-ibs-via-core-pmu.c:47:25: error: 'pmus' undeclared
(first use in this function)
   47 |         if (list_empty(&pmus))
      |                         ^~~~
arch/x86/tests/amd-ibs-via-core-pmu.c:47:25: note: each undeclared
identifier is reported only once for each function it appears in
arch/x86/tests/amd-ibs-via-core-pmu.c:48:17: error: implicit
declaration of function 'perf_pmu__scan'; did you mean
'perf_pmus__scan'? [-Werror=implicit-function-declaration]
   48 |                 perf_pmu__scan(NULL);
      |                 ^~~~~~~~~~~~~~
      |                 perf_pmus__scan
arch/x86/tests/amd-ibs-via-core-pmu.c:50:19: error: implicit
declaration of function 'perf_pmu__find'; did you mean
'perf_pmus__find'? [-Werror=implicit-function-declaration]
   50 |         ibs_pmu = perf_pmu__find("ibs_op");
      |                   ^~~~~~~~~~~~~~
      |                   perf_pmus__find
arch/x86/tests/amd-ibs-via-core-pmu.c:50:17: error: assignment to
'struct perf_pmu *' from 'int' makes pointer from integer without a
cast [-Werror=int-conversion]
   50 |         ibs_pmu = perf_pmu__find("ibs_op");
      |                 ^
cc1: all warnings being treated as errors

Links:
======
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230606/testrun/17346999/suite/build/test/gcc-11-lkftconfig-perf/log
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230606/testrun/17346999/suite/build/test/gcc-11-lkftconfig-perf/history/


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