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 = perf_pmus__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 = perf_pmus__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 = perf_pmus__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 } 50