tools/perf/util/arm-spe.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Arm Statistical Profiling Extensions (SPE) support
   4  * Copyright (c) 2017-2018, Arm Ltd.
   5  */
   6
   7 #ifndef INCLUDE__PERF_ARM_SPE_H__
   8 #define INCLUDE__PERF_ARM_SPE_H__
   9
  10 #define ARM_SPE_PMU_NAME "arm_spe_"
  11
  12 enum {
  13         ARM_SPE_PMU_TYPE,
  14         ARM_SPE_PER_CPU_MMAPS,
  15         ARM_SPE_AUXTRACE_V1_PRIV_MAX,
  16 };
  17
  18 #define ARM_SPE_AUXTRACE_V1_PRIV_SIZE   \
  19         (ARM_SPE_AUXTRACE_V1_PRIV_MAX * sizeof(u64))
  20
  21 enum {
  22         /*
  23          * The old metadata format (defined above) does not include a
  24          * field for version number. Version 1 is reserved and starts
  25          * from version 2.
  26          */
  27         ARM_SPE_HEADER_VERSION,
  28         /* Number of sizeof(u64) */
  29         ARM_SPE_HEADER_SIZE,
  30         /* PMU type shared by CPUs */
  31         ARM_SPE_PMU_TYPE_V2,
  32         /* Number of CPUs */
  33         ARM_SPE_CPUS_NUM,
  34         ARM_SPE_AUXTRACE_PRIV_MAX,
  35 };
  36
  37 enum {
  38         /* Magic number */
  39         ARM_SPE_MAGIC,
  40         /* CPU logical number in system */
  41         ARM_SPE_CPU,
  42         /* Number of parameters */
  43         ARM_SPE_CPU_NR_PARAMS,
  44         /* CPU MIDR */
  45         ARM_SPE_CPU_MIDR,
  46         /* Associated PMU type */
  47         ARM_SPE_CPU_PMU_TYPE,
  48         /* Minimal interval */
  49         ARM_SPE_CAP_MIN_IVAL,
  50         ARM_SPE_CPU_PRIV_MAX,
  51 };
  52
  53 #define ARM_SPE_HEADER_CURRENT_VERSION  2
  54
  55
  56 union perf_event;
  57 struct perf_session;
  58 struct perf_pmu;
  59
  60 struct auxtrace_record *arm_spe_recording_init(int *err,
  61                                                struct perf_pmu *arm_spe_pmu);
  62
  63 int arm_spe_process_auxtrace_info(union perf_event *event,
  64                                   struct perf_session *session);
  65
  66 void arm_spe_pmu_default_config(const struct perf_pmu *arm_spe_pmu,
  67                                 struct perf_event_attr *attr);
  68
  69 #endif