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Factor out /proc/cpuinfo scanning and add support for ARM to operf

This patch adds support for parsing the cpu type from /proc/cpuinfo on
ARM platforms and hooks this into __get_cpu_type_alt_method so that
perf-events can be used as the backend. The previous /proc/cpuinfo parsing
code used by ppc64 to identify the current CPU type is useful for other
architectures that don't have a userspace cpuid instruction (for example, ARM),
so this patch factors out the /proc/cpuinfo reading code to be usable for
ARM support.

Signed-off-by: Will Deacon <>

Will Deacon Will Deacon 2012-06-15

Maynard Johnson Maynard Johnson 2012-06-15

changed libop/op_cpu_type.c
libop/op_cpu_type.c Diff Switch to side-by-side view

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