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#define STM_FLAG_TIMESTAMPED   BIT(3)
   6#define STM_FLAG_GUARANTEED    BIT(7)
   7
   8/*
   9 * The CoreSight STM supports guaranteed and invariant timing
  10 * transactions.  Guaranteed transactions are guaranteed to be
  11 * traced, this might involve stalling the bus or system to
  12 * ensure the transaction is accepted by the STM.  While invariant
  13 * timing transactions are not guaranteed to be traced, they
  14 * will take an invariant amount of time regardless of the
  15 * state of the STM.
  16 */
  17enum {
  18        STM_OPTION_GUARANTEED = 0,
  19        STM_OPTION_INVARIANT,
  20};
  21
  22#endif
  23