include/counter/config.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
   2  *
   3  * counter/config.h
   4  *
   5  * LTTng Counters Configuration
   6  *
   7  * Copyright (C) 2020 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  */
   9
  10 #ifndef _LTTNG_COUNTER_CONFIG_H
  11 #define _LTTNG_COUNTER_CONFIG_H
  12
  13 #include <linux/types.h>
  14 #include <linux/percpu.h>
  15
  16 enum lib_counter_config_alloc {
  17         COUNTER_ALLOC_PER_CPU   = (1 << 0),
  18         COUNTER_ALLOC_GLOBAL    = (1 << 1),
  19 };
  20
  21 enum lib_counter_config_sync {
  22         COUNTER_SYNC_PER_CPU,
  23         COUNTER_SYNC_GLOBAL,
  24 };
  25
  26 struct lib_counter_config {
  27         u32 alloc;      /* enum lib_counter_config_alloc flags */
  28         enum lib_counter_config_sync sync;
  29         enum {
  30                 COUNTER_ARITHMETIC_MODULAR,
  31                 COUNTER_ARITHMETIC_SATURATE,    /* TODO */
  32         } arithmetic;
  33         enum {
  34                 COUNTER_SIZE_8_BIT      = 1,
  35                 COUNTER_SIZE_16_BIT     = 2,
  36                 COUNTER_SIZE_32_BIT     = 4,
  37                 COUNTER_SIZE_64_BIT     = 8,
  38         } counter_size;
  39 };
  40
  41 #endif /* _LTTNG_COUNTER_CONFIG_H */