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 "../../../util/tool_pmu.h" 9 #include <api/fs/fs.h> 10 #include <math.h> 11 12 const struct pmu_metrics_table *pmu_metrics_table__find(void) 13 { 14 struct perf_pmu *pmu; 15 16 /* Metrics aren't currently supported on heterogeneous Arm systems */ 17 if (perf_pmus__num_core_pmus() > 1) 18 return NULL; 19 20 /* Doesn't matter which one here because they'll all be the same */ 21 pmu = perf_pmus__find_core_pmu(); 22 if (pmu) 23 return perf_pmu__find_metrics_table(pmu); 24 25 return NULL; 26 } 27 28 u64 tool_pmu__cpu_slots_per_cycle(void) 29 { 30 char path[PATH_MAX]; 31 unsigned long long slots = 0; 32 struct perf_pmu *pmu = perf_pmus__find_core_pmu(); 33 34 if (pmu) { 35 perf_pmu__pathname_scnprintf(path, sizeof(path), 36 pmu->name, "caps/slots"); 37 /* 38 * The value of slots is not greater than 32 bits, but 39 * filename__read_int can't read value with 0x prefix, 40 * so use filename__read_ull instead. 41 */ 42 filename__read_ull(path, &slots); 43 } 44 45 return slots; 46 } 47