powerpc/perf: Only define power_pmu_wants_prompt_pmi() for CONFIG_PPC64
power_pmu_wants_prompt_pmi() is used to decide if PMIs should be taken promptly. This is valid only for ppc64 and is used only if CONFIG_PPC_BOOK3S_64=y. Hence include the function under config check for PPC64. Fixes warning for 32-bit compilation: arch/powerpc/perf/core-book3s.c:2455:6: warning: no previous prototype for 'power_pmu_wants_prompt_pmi' 2455 | bool power_pmu_wants_prompt_pmi(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ Fixes: 5a7745b9 ("powerpc/64s/perf: add power_pmu_wants_prompt_pmi to say whether perf wants PMIs to be soft-NMI") Reported-by:kernel test robot <lkp@intel.com> Signed-off-by:
Athira Rajeev <atrajeev@linux.vnet.ibm.com> Reviewed-by:
Nicholas Piggin <npiggin@gmail.com> [mpe: Move inside existing CONFIG_PPC64 ifdef block] Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220114031355.87480-1-atrajeev@linux.vnet.ibm.com
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