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The function get_cpuid_str() is called by perf_pmu__getcpuid() and on s390 returns a complete description of the CPU and its capabilities, which is a comma separated list. To map the CPU type with the value defined in the pmu-events/arch/s390/mapfile.csv, introduce an architecture specific cpuid compare function named strcmp_cpuid_str() The currently used regex algorithm is defined as the weak default and will be used if no platform specific one is defined. This matches the current behavior. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180213151419.80737-3-tmricht@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>