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// SPDX-License-Identifier: GPL-2.0
#include <internal/cpumap.h>
#include "../../../util/cpumap.h"
#include "../../../util/header.h"
#include "../../../util/pmu.h"
#include "../../../util/pmus.h"
#include <api/fs/fs.h>
#include <math.h>
const struct pmu_metrics_table *pmu_metrics_table__find(void)
{
struct perf_pmu *pmu;
/* Metrics aren't currently supported on heterogeneous Arm systems */
if (perf_pmus__num_core_pmus() > 1)
return NULL;
/* Doesn't matter which one here because they'll all be the same */
pmu = perf_pmus__find_core_pmu();
if (pmu)
return perf_pmu__find_metrics_table(pmu);
return NULL;
}
double perf_pmu__cpu_slots_per_cycle(void)
{
char path[PATH_MAX];
unsigned long long slots = 0;
struct perf_pmu *pmu = perf_pmus__find_core_pmu();
if (pmu) {
perf_pmu__pathname_scnprintf(path, sizeof(path),
pmu->name, "caps/slots");
/*
* The value of slots is not greater than 32 bits, but
* filename__read_int can't read value with 0x prefix,
* so use filename__read_ull instead.
*/
filename__read_ull(path, &slots);
}
return slots ? (double)slots : NAN;
}
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