include/lttng/counter-config.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  *
   6  * LTTng Counters Configuration
   7  */
   8
   9 #ifndef _LTTNG_COUNTER_CONFIG_H
  10 #define _LTTNG_COUNTER_CONFIG_H
  11
  12 #include <stdint.h>
  13
  14 enum lib_counter_config_alloc {
  15         COUNTER_ALLOC_PER_CPU = (1 << 0),
  16         COUNTER_ALLOC_GLOBAL  = (1 << 1),
  17 };
  18
  19 enum lib_counter_config_sync {
  20         COUNTER_SYNC_PER_CPU,
  21         COUNTER_SYNC_GLOBAL,
  22 };
  23
  24 struct lib_counter_config {
  25         uint32_t alloc; /* enum lib_counter_config_alloc flags */
  26         enum lib_counter_config_sync sync;
  27         enum {
  28                 COUNTER_ARITHMETIC_MODULAR,
  29                 COUNTER_ARITHMETIC_SATURATE,    /* TODO */
  30         } arithmetic;
  31         enum {
  32                 COUNTER_SIZE_8_BIT      = 1,
  33                 COUNTER_SIZE_16_BIT     = 2,
  34                 COUNTER_SIZE_32_BIT     = 4,
  35                 COUNTER_SIZE_64_BIT     = 8,
  36         } counter_size;
  37 };
  38
  39 #endif /* _LTTNG_COUNTER_CONFIG_H */