mirror of https://gitee.com/openkylin/linux.git
54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
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#include "evlist.h"
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#include "evsel.h"
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#include "util.h"
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struct perf_evlist *perf_evlist__new(void)
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{
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struct perf_evlist *evlist = zalloc(sizeof(*evlist));
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if (evlist != NULL) {
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INIT_LIST_HEAD(&evlist->entries);
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}
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return evlist;
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}
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static void perf_evlist__purge(struct perf_evlist *evlist)
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{
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struct perf_evsel *pos, *n;
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list_for_each_entry_safe(pos, n, &evlist->entries, node) {
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list_del_init(&pos->node);
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perf_evsel__delete(pos);
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}
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evlist->nr_entries = 0;
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}
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void perf_evlist__delete(struct perf_evlist *evlist)
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{
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perf_evlist__purge(evlist);
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free(evlist);
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}
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void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry)
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{
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list_add_tail(&entry->node, &evlist->entries);
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++evlist->nr_entries;
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}
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int perf_evlist__add_default(struct perf_evlist *evlist)
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{
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struct perf_event_attr attr = {
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.type = PERF_TYPE_HARDWARE,
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.config = PERF_COUNT_HW_CPU_CYCLES,
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};
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struct perf_evsel *evsel = perf_evsel__new(&attr, 0);
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if (evsel == NULL)
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return -ENOMEM;
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perf_evlist__add(evlist, evsel);
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return 0;
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}
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