arch/x86/include/asm/intel_rdt_common.h

   1 #ifndef _ASM_X86_INTEL_RDT_COMMON_H
   2 #define _ASM_X86_INTEL_RDT_COMMON_H
   3
   4 #define MSR_IA32_PQR_ASSOC      0x0c8f
   5
   6 /**
   7  * struct intel_pqr_state - State cache for the PQR MSR
   8  * @rmid:               The cached Resource Monitoring ID
   9  * @closid:             The cached Class Of Service ID
  10  * @rmid_usecnt:        The usage counter for rmid
  11  *
  12  * The upper 32 bits of MSR_IA32_PQR_ASSOC contain closid and the
  13  * lower 10 bits rmid. The update to MSR_IA32_PQR_ASSOC always
  14  * contains both parts, so we need to cache them.
  15  *
  16  * The cache also helps to avoid pointless updates if the value does
  17  * not change.
  18  */
  19 struct intel_pqr_state {
  20         u32                     rmid;
  21         u32                     closid;
  22         int                     rmid_usecnt;
  23 };
  24
  25 DECLARE_PER_CPU(struct intel_pqr_state, pqr_state);
  26
  27 #endif /* _ASM_X86_INTEL_RDT_COMMON_H */