Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2020 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : 
      16             : #include <vnet/vnet.h>
      17             : #include <perfmon/perfmon.h>
      18             : #include <perfmon/intel/core.h>
      19             : 
      20             : static u8 *
      21           0 : format_branch_mispredictions (u8 *s, va_list *args)
      22             : {
      23           0 :   perfmon_node_stats_t *ns = va_arg (*args, perfmon_node_stats_t *);
      24           0 :   int row = va_arg (*args, int);
      25             : 
      26           0 :   switch (row)
      27             :     {
      28           0 :     case 0:
      29           0 :       s = format (s, "%9.2f", ns->value[0] / (f64) ns->n_calls);
      30           0 :       break;
      31           0 :     case 1:
      32           0 :       s = format (s, "%9.2f", ns->value[0] / (f64) ns->n_packets);
      33           0 :       break;
      34           0 :     case 2:
      35           0 :       s = format (s, "%9.2f", ns->value[1] / (f64) ns->n_calls);
      36           0 :       break;
      37           0 :     case 3:
      38           0 :       s = format (s, "%9.2f", ns->value[1] / (f64) ns->n_packets);
      39           0 :       break;
      40           0 :     case 4:
      41           0 :       s = format (s, "%05.2f", (ns->value[2] / (f64) ns->value[0]) * 100);
      42           0 :       break;
      43             :     }
      44           0 :   return s;
      45             : }
      46             : 
      47         559 : PERFMON_REGISTER_BUNDLE (branch_mispredictions) = {
      48             :   .name = "branch-mispred",
      49             :   .description = "Branches, branches taken and mis-predictions",
      50             :   .source = "intel-core",
      51             :   .type = PERFMON_BUNDLE_TYPE_NODE,
      52             :   .events[0] = INTEL_CORE_E_BR_INST_RETIRED_ALL_BRANCHES,
      53             :   .events[1] = INTEL_CORE_E_BR_INST_RETIRED_NEAR_TAKEN,
      54             :   .events[2] = INTEL_CORE_E_BR_MISP_RETIRED_ALL_BRANCHES,
      55             :   .n_events = 3,
      56             :   .format_fn = format_branch_mispredictions,
      57             :   .column_headers = PERFMON_STRINGS ("Branches/call", "Branches/pkt",
      58             :                                      "Taken/call", "Taken/pkt", "% MisPred"),
      59             : };