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This patch introduces op_x86_get_ctrl() to calculate the value of the performance control register. This is generic code usable for all models. The event and reserved masks are model specific and stored in struct op_x86_model_spec. 64 bit MSR functions are used now. The patch removes many hard to read macros used for ctrl calculation. The function op_x86_get_ctrl() is common code and the first step to further merge performance counter implementations for x86 models. Signed-off-by: Robert Richter <robert.richter@amd.com>