perfctr.h

   1 /* Extracts from the perfctr sources of the parts of the
   2  * linux/perfctr.h and asm-i386/perfctr.h that we need.
   3  *
   4  * Trying to depend on the user-space library for perfctr
   5  * looks like it will be more trouble than its worth,
   6  * and doesn't really isolate us from the hard parts.
   7  *
   8  * Copyright (C) 1999-2002  Mikael Pettersson
   9  */
  10
  11 struct perfctr_sum_ctrs {
  12         unsigned long long tsc;
  13         unsigned long long pmc[18];
  14 };
  15
  16 struct perfctr_low_ctrs {
  17         unsigned int tsc;
  18         unsigned int pmc[18];
  19 };
  20
  21 struct perfctr_cpu_control {
  22         unsigned int tsc_on;
  23         unsigned int nractrs;           /* # of a-mode counters */
  24         unsigned int nrictrs;           /* # of i-mode counters */
  25         unsigned int pmc_map[18];
  26         unsigned int evntsel[18];       /* one per counter, even on P5 */
  27         unsigned int evntsel_aux[18];   /* e.g. P4 ESCR contents */
  28         struct {
  29                 unsigned int pebs_enable;       /* for replay tagging */
  30                 unsigned int pebs_matrix_vert;  /* for replay tagging */
  31         } p4;
  32         int ireset[18];                 /* <= 0, for i-mode counters */
  33 };
  34
  35 struct perfctr_cpu_state {
  36         unsigned int cstatus;
  37         union {
  38                 unsigned int p5_cesr;
  39                 unsigned int id;        /* cache owner id */
  40         } k1;
  41         struct perfctr_sum_ctrs sum;
  42         struct perfctr_low_ctrs start;
  43         struct perfctr_cpu_control control;
  44         struct {
  45                 unsigned int p4_escr_map[18];
  46                 const void *isuspend_cpu;
  47         } k2;
  48 };
  49
  50 struct perfctr_info {
  51         char version[32];
  52         unsigned char nrcpus;
  53         unsigned char cpu_type;
  54         unsigned char cpu_features;
  55         unsigned long cpu_khz;
  56 };
  57
  58 /* cpu_type values */
  59 #define PERFCTR_X86_GENERIC     0       /* any x86 with rdtsc */
  60 #define PERFCTR_X86_INTEL_P5    1       /* no rdpmc */
  61 #define PERFCTR_X86_INTEL_P5MMX 2
  62 #define PERFCTR_X86_INTEL_P6    3
  63 #define PERFCTR_X86_INTEL_PII   4
  64 #define PERFCTR_X86_INTEL_PIII  5
  65 #define PERFCTR_X86_CYRIX_MII   6
  66 #define PERFCTR_X86_WINCHIP_C6  7       /* no rdtsc */
  67 #define PERFCTR_X86_WINCHIP_2   8       /* no rdtsc */
  68 #define PERFCTR_X86_AMD_K7      9
  69 #define PERFCTR_X86_VIA_C3      10      /* no pmc0 */
  70 #define PERFCTR_X86_INTEL_P4    11      /* model 0 and 1 */
  71 #define PERFCTR_X86_INTEL_P4M2  12      /* model 2 and above */
  72
  73 /* cpu_features flag bits */
  74 #define PERFCTR_FEATURE_RDPMC   0x01
  75 #define PERFCTR_FEATURE_RDTSC   0x02
  76 #define PERFCTR_FEATURE_PCINT   0x04
  77
  78 /* user's view of mmap:ed virtual perfctr */
  79 struct vperfctr_state {
  80         unsigned int magic;
  81         int si_signo;
  82         struct perfctr_cpu_state cpu_state;
  83 };
  84
  85 /* `struct vperfctr_state' binary layout version number */
  86 #define VPERFCTR_STATE_MAGIC    0x0201  /* 2.1 */
  87 #define VPERFCTR_MAGIC  ((VPERFCTR_STATE_MAGIC<<16)|PERFCTR_CPU_STATE_MAGIC)
  88
  89 /* parameter in VPERFCTR_CONTROL command */
  90 struct vperfctr_control {
  91         int si_signo;
  92         struct perfctr_cpu_control cpu_control;
  93 };
  94
  95 #include <linux/ioctl.h>
  96 #define _PERFCTR_IOCTL  0xD0    /* 'P'+128, currently unassigned */
  97
  98 #define PERFCTR_INFO            _IOR(_PERFCTR_IOCTL,0,struct perfctr_info)
  99
 100 #define VPERFCTR_SAMPLE          _IO(_PERFCTR_IOCTL,1)
 101 #define VPERFCTR_UNLINK          _IO(_PERFCTR_IOCTL,2)
 102 #define VPERFCTR_CONTROL        _IOW(_PERFCTR_IOCTL,3,struct vperfctr_control)
 103 #define VPERFCTR_STOP            _IO(_PERFCTR_IOCTL,4)
 104 #define VPERFCTR_IRESUME         _IO(_PERFCTR_IOCTL,5)