tools/power/cpupower/utils/idle_monitor/cpupower-monitor.h

   1 /*
   2  *  (C) 2010,2011       Thomas Renninger <trenn@suse.de>, Novell Inc.
   3  *
   4  *  Licensed under the terms of the GNU GPL License version 2.
   5  *
   6  */
   7
   8 #ifndef __CPUIDLE_INFO_HW__
   9 #define __CPUIDLE_INFO_HW__
  10
  11 #include <stdarg.h>
  12 #include <time.h>
  13
  14 #include "idle_monitor/idle_monitors.h"
  15
  16 #define MONITORS_MAX 20
  17 #define MONITOR_NAME_LEN 20
  18 #define CSTATE_NAME_LEN 5
  19 #define CSTATE_DESC_LEN 60
  20
  21 int cpu_count;
  22
  23 /* Hard to define the right names ...: */
  24 enum power_range_e {
  25         RANGE_THREAD,   /* Lowest in topology hierarcy, AMD: core, Intel: thread
  26                            kernel sysfs: cpu */
  27         RANGE_CORE,     /* AMD: unit, Intel: core, kernel_sysfs: core_id */
  28         RANGE_PACKAGE,  /* Package, processor socket */
  29         RANGE_MACHINE,  /* Machine, platform wide */
  30         RANGE_MAX };
  31
  32 typedef struct cstate {
  33         int  id;
  34         enum power_range_e range;
  35         char name[CSTATE_NAME_LEN];
  36         char desc[CSTATE_DESC_LEN];
  37
  38         /* either provide a percentage or a general count */
  39         int (*get_count_percent)(unsigned int self_id, double *percent,
  40                                  unsigned int cpu);
  41         int (*get_count)(unsigned int self_id, unsigned long long *count,
  42                          unsigned int cpu);
  43 } cstate_t;
  44
  45 struct cpuidle_monitor {
  46         /* Name must not contain whitespaces */
  47         char name[MONITOR_NAME_LEN];
  48         int name_len;
  49         int hw_states_num;
  50         cstate_t *hw_states;
  51         int (*start) (void);
  52         int (*stop) (void);
  53         struct cpuidle_monitor* (*do_register) (void);
  54         void (*unregister)(void);
  55         unsigned int overflow_s;
  56         int needs_root;
  57 };
  58
  59 extern long long timespec_diff_us(struct timespec start, struct timespec end);
  60
  61 #define print_overflow_err(mes, ov)                                             \
  62 {                                                                               \
  63         fprintf(stderr, gettext("Measure took %u seconds, but registers could " \
  64                                 "overflow at %u seconds, results "              \
  65                                 "could be inaccurate\n"), mes, ov);             \
  66 }
  67
  68 #endif /* __CPUIDLE_INFO_HW__ */