tools/perf/arch/arm64/util/pmu.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <internal/cpumap.h>
   4 #include "../../../util/cpumap.h"
   5 #include "../../../util/header.h"
   6 #include "../../../util/pmu.h"
   7 #include "../../../util/pmus.h"
   8 #include <api/fs/fs.h>
   9 #include <math.h>
  10
  11 const struct pmu_metrics_table *pmu_metrics_table__find(void)
  12 {
  13         struct perf_pmu *pmu = pmu__find_core_pmu();
  14
  15         if (pmu)
  16                 return perf_pmu__find_metrics_table(pmu);
  17
  18         return NULL;
  19 }
  20
  21 const struct pmu_events_table *pmu_events_table__find(void)
  22 {
  23         struct perf_pmu *pmu = pmu__find_core_pmu();
  24
  25         if (pmu)
  26                 return perf_pmu__find_events_table(pmu);
  27
  28         return NULL;
  29 }
  30
  31 double perf_pmu__cpu_slots_per_cycle(void)
  32 {
  33         char path[PATH_MAX];
  34         unsigned long long slots = 0;
  35         struct perf_pmu *pmu = pmu__find_core_pmu();
  36
  37         if (pmu) {
  38                 perf_pmu__pathname_scnprintf(path, sizeof(path),
  39                                              pmu->name, "caps/slots");
  40                 /*
  41                  * The value of slots is not greater than 32 bits, but
  42                  * filename__read_int can't read value with 0x prefix,
  43                  * so use filename__read_ull instead.
  44                  */
  45                 filename__read_ull(path, &slots);
  46         }
  47
  48         return slots ? (double)slots : NAN;
  49 }