tools/perf/arch/x86/tests/amd-ibs-via-core-pmu.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "arch-tests.h"
   3 #include "linux/perf_event.h"
   4 #include "tests/tests.h"
   5 #include "pmu.h"
   6 #include "pmus.h"
   7 #include "../perf-sys.h"
   8 #include "debug.h"
   9
  10 #define NR_SUB_TESTS 5
  11
  12 static struct sub_tests {
  13         int type;
  14         unsigned long config;
  15         bool valid;
  16 } sub_tests[NR_SUB_TESTS] = {
  17         { PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES, true },
  18         { PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS, false },
  19         { PERF_TYPE_RAW, 0x076, true },
  20         { PERF_TYPE_RAW, 0x0C1, true },
  21         { PERF_TYPE_RAW, 0x012, false },
  22 };
  23
  24 static int event_open(int type, unsigned long config)
  25 {
  26         struct perf_event_attr attr;
  27
  28         memset(&attr, 0, sizeof(struct perf_event_attr));
  29         attr.type = type;
  30         attr.size = sizeof(struct perf_event_attr);
  31         attr.config = config;
  32         attr.disabled = 1;
  33         attr.precise_ip = 1;
  34         attr.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
  35         attr.sample_period = 100000;
  36
  37         return sys_perf_event_open(&attr, -1, 0, -1, 0);
  38 }
  39
  40 int test__amd_ibs_via_core_pmu(struct test_suite *test __maybe_unused,
  41                                int subtest __maybe_unused)
  42 {
  43         struct perf_pmu *ibs_pmu;
  44         int ret = TEST_OK;
  45         int fd, i;
  46
  47         ibs_pmu = perf_pmus__find("ibs_op");
  48         if (!ibs_pmu)
  49                 return TEST_SKIP;
  50
  51         for (i = 0; i < NR_SUB_TESTS; i++) {
  52                 fd = event_open(sub_tests[i].type, sub_tests[i].config);
  53                 pr_debug("type: 0x%x, config: 0x%lx, fd: %d  -  ", sub_tests[i].type,
  54                          sub_tests[i].config, fd);
  55                 if ((sub_tests[i].valid && fd == -1) ||
  56                     (!sub_tests[i].valid && fd > 0)) {
  57                         pr_debug("Fail\n");
  58                         ret = TEST_FAIL;
  59                 } else {
  60                         pr_debug("Pass\n");
  61                 }
  62
  63                 if (fd > 0)
  64                         close(fd);
  65         }
  66
  67         return ret;
  68 }