LXR linux/include/uapi/linux/coresight-stm.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef __UAPI_CORESIGHT_STM_H_
   3#define __UAPI_CORESIGHT_STM_H_
   4
   5#include <linux/const.h>
   6
   7#define STM_FLAG_TIMESTAMPED   _BITUL(3)
   8#define STM_FLAG_MARKED        _BITUL(4)
   9#define STM_FLAG_GUARANTEED    _BITUL(7)
  10
  11/*
  12 * The CoreSight STM supports guaranteed and invariant timing
  13 * transactions.  Guaranteed transactions are guaranteed to be
  14 * traced, this might involve stalling the bus or system to
  15 * ensure the transaction is accepted by the STM.  While invariant
  16 * timing transactions are not guaranteed to be traced, they
  17 * will take an invariant amount of time regardless of the
  18 * state of the STM.
  19 */
  20enum {
  21        STM_OPTION_GUARANTEED = 0,
  22        STM_OPTION_INVARIANT,
  23};
  24
  25#endif
  26