arch/x86/oprofile/op_x86_model.h

   1 /**
   2  * @file op_x86_model.h
   3  * interface to x86 model-specific MSR operations
   4  *
   5  * @remark Copyright 2002 OProfile authors
   6  * @remark Read the file COPYING
   7  *
   8  * @author Graydon Hoare
   9  */
  10
  11 #ifndef OP_X86_MODEL_H
  12 #define OP_X86_MODEL_H
  13
  14 struct op_saved_msr {
  15         unsigned int high;
  16         unsigned int low;
  17 };
  18
  19 struct op_msr {
  20         unsigned long addr;
  21         struct op_saved_msr saved;
  22 };
  23
  24 struct op_msrs {
  25         struct op_msr *counters;
  26         struct op_msr *controls;
  27 };
  28
  29 struct pt_regs;
  30
  31 /* The model vtable abstracts the differences between
  32  * various x86 CPU models' perfctr support.
  33  */
  34 struct op_x86_model_spec {
  35         int (*init)(struct oprofile_operations *ops);
  36         void (*exit)(void);
  37         unsigned int num_counters;
  38         unsigned int num_controls;
  39         void (*fill_in_addresses)(struct op_msrs * const msrs);
  40         void (*setup_ctrs)(struct op_msrs const * const msrs);
  41         int (*check_ctrs)(struct pt_regs * const regs,
  42                 struct op_msrs const * const msrs);
  43         void (*start)(struct op_msrs const * const msrs);
  44         void (*stop)(struct op_msrs const * const msrs);
  45         void (*shutdown)(struct op_msrs const * const msrs);
  46 };
  47
  48 extern struct op_x86_model_spec op_ppro_spec;
  49 extern struct op_x86_model_spec const op_p4_spec;
  50 extern struct op_x86_model_spec const op_p4_ht2_spec;
  51 extern struct op_x86_model_spec const op_amd_spec;
  52 extern struct op_x86_model_spec op_arch_perfmon_spec;
  53
  54 extern void arch_perfmon_setup_counters(void);
  55
  56 #endif /* OP_X86_MODEL_H */