73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/list.h>
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#include <linux/compiler.h>
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#include <linux/string.h>
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#include <linux/zalloc.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <locale.h>
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#include <api/fs/fs.h>
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#include "fncache.h"
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#include "pmu-hybrid.h"
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LIST_HEAD(perf_pmu__hybrid_pmus);
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bool perf_pmu__hybrid_mounted(const char *name)
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{
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int cpu;
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char pmu_name[PATH_MAX];
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struct perf_pmu pmu = {.name = pmu_name};
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if (strncmp(name, "cpu_", 4))
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return false;
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strlcpy(pmu_name, name, sizeof(pmu_name));
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return perf_pmu__scan_file(&pmu, "cpus", "%u", &cpu) > 0;
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}
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struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name)
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{
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struct perf_pmu *pmu;
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if (!name)
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return NULL;
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perf_pmu__for_each_hybrid_pmu(pmu) {
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if (!strcmp(name, pmu->name))
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return pmu;
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}
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return NULL;
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}
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bool perf_pmu__is_hybrid(const char *name)
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{
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return perf_pmu__find_hybrid_pmu(name) != NULL;
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}
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char *perf_pmu__hybrid_type_to_pmu(const char *type)
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{
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char *pmu_name = NULL;
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if (asprintf(&pmu_name, "cpu_%s", type) < 0)
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return NULL;
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if (perf_pmu__is_hybrid(pmu_name))
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return pmu_name;
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/*
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* pmu may be not scanned, check the sysfs.
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*/
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if (perf_pmu__hybrid_mounted(pmu_name))
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return pmu_name;
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free(pmu_name);
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return NULL;
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}
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