162 строки
3.8 KiB
C
162 строки
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <errno.h>
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#include <inttypes.h>
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#include "cpumap.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "../perf.h"
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#include "util/pmu-hybrid.h"
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#include "util/evlist-hybrid.h"
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#include "debug.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <linux/err.h>
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#include <linux/string.h>
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#include <perf/evlist.h>
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#include <perf/evsel.h>
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#include <perf/cpumap.h>
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int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
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{
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struct evsel *evsel;
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struct perf_pmu *pmu;
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__u64 config;
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struct perf_cpu_map *cpus;
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perf_pmu__for_each_hybrid_pmu(pmu) {
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config = PERF_COUNT_HW_CPU_CYCLES |
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((__u64)pmu->type << PERF_PMU_TYPE_SHIFT);
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evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
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config);
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if (!evsel)
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return -ENOMEM;
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cpus = perf_cpu_map__get(pmu->cpus);
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evsel->core.cpus = cpus;
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evsel->core.own_cpus = perf_cpu_map__get(cpus);
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evsel->pmu_name = strdup(pmu->name);
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evlist__add(evlist, evsel);
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}
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return 0;
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}
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static bool group_hybrid_conflict(struct evsel *leader)
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{
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struct evsel *pos, *prev = NULL;
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for_each_group_evsel(pos, leader) {
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if (!evsel__is_hybrid(pos))
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continue;
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if (prev && strcmp(prev->pmu_name, pos->pmu_name))
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return true;
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prev = pos;
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}
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return false;
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}
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void evlist__warn_hybrid_group(struct evlist *evlist)
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{
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struct evsel *evsel;
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evlist__for_each_entry(evlist, evsel) {
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if (evsel__is_group_leader(evsel) &&
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evsel->core.nr_members > 1 &&
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group_hybrid_conflict(evsel)) {
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pr_warning("WARNING: events in group from "
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"different hybrid PMUs!\n");
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return;
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}
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}
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}
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bool evlist__has_hybrid(struct evlist *evlist)
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{
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struct evsel *evsel;
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evlist__for_each_entry(evlist, evsel) {
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if (evsel->pmu_name &&
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perf_pmu__is_hybrid(evsel->pmu_name)) {
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return true;
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}
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}
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return false;
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}
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int evlist__fix_hybrid_cpus(struct evlist *evlist, const char *cpu_list)
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{
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struct perf_cpu_map *cpus;
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struct evsel *evsel, *tmp;
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struct perf_pmu *pmu;
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int ret, unmatched_count = 0, events_nr = 0;
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if (!perf_pmu__has_hybrid() || !cpu_list)
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return 0;
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cpus = perf_cpu_map__new(cpu_list);
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if (!cpus)
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return -1;
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/*
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* The evsels are created with hybrid pmu's cpus. But now we
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* need to check and adjust the cpus of evsel by cpu_list because
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* cpu_list may cause conflicts with cpus of evsel. For example,
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* cpus of evsel is cpu0-7, but the cpu_list is cpu6-8, we need
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* to adjust the cpus of evsel to cpu6-7. And then propatate maps
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* in evlist__create_maps().
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*/
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evlist__for_each_entry_safe(evlist, tmp, evsel) {
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struct perf_cpu_map *matched_cpus, *unmatched_cpus;
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char buf1[128], buf2[128];
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pmu = perf_pmu__find_hybrid_pmu(evsel->pmu_name);
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if (!pmu)
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continue;
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ret = perf_pmu__cpus_match(pmu, cpus, &matched_cpus,
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&unmatched_cpus);
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if (ret)
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goto out;
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events_nr++;
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if (matched_cpus->nr > 0 && (unmatched_cpus->nr > 0 ||
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matched_cpus->nr < cpus->nr ||
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matched_cpus->nr < pmu->cpus->nr)) {
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perf_cpu_map__put(evsel->core.cpus);
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perf_cpu_map__put(evsel->core.own_cpus);
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evsel->core.cpus = perf_cpu_map__get(matched_cpus);
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evsel->core.own_cpus = perf_cpu_map__get(matched_cpus);
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if (unmatched_cpus->nr > 0) {
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cpu_map__snprint(matched_cpus, buf1, sizeof(buf1));
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pr_warning("WARNING: use %s in '%s' for '%s', skip other cpus in list.\n",
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buf1, pmu->name, evsel->name);
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}
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}
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if (matched_cpus->nr == 0) {
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evlist__remove(evlist, evsel);
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evsel__delete(evsel);
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cpu_map__snprint(cpus, buf1, sizeof(buf1));
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cpu_map__snprint(pmu->cpus, buf2, sizeof(buf2));
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pr_warning("WARNING: %s isn't a '%s', please use a CPU list in the '%s' range (%s)\n",
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buf1, pmu->name, pmu->name, buf2);
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unmatched_count++;
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}
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perf_cpu_map__put(matched_cpus);
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perf_cpu_map__put(unmatched_cpus);
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}
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ret = (unmatched_count == events_nr) ? -1 : 0;
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out:
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perf_cpu_map__put(cpus);
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return ret;
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}
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