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// SPDX-License-Identifier: GPL-2.0
#include <perf/evlist.h>
#include <linux/list.h>
#include <internal/evlist.h>
#include <internal/evsel.h>
#include <linux/zalloc.h>
#include <stdlib.h>
#include <perf/cpumap.h>
#include <perf/threadmap.h>
void perf_evlist__init(struct perf_evlist *evlist)
{
INIT_LIST_HEAD(&evlist->entries);
evlist->nr_entries = 0;
}
static void __perf_evlist__propagate_maps(struct perf_evlist *evlist,
struct perf_evsel *evsel)
{
/*
* We already have cpus for evsel (via PMU sysfs) so
* keep it, if there's no target cpu list defined.
*/
if (!evsel->own_cpus || evlist->has_user_cpus) {
perf_cpu_map__put(evsel->cpus);
evsel->cpus = perf_cpu_map__get(evlist->cpus);
} else if (evsel->cpus != evsel->own_cpus) {
perf_cpu_map__put(evsel->cpus);
evsel->cpus = perf_cpu_map__get(evsel->own_cpus);
}
perf_thread_map__put(evsel->threads);
evsel->threads = perf_thread_map__get(evlist->threads);
}
static void perf_evlist__propagate_maps(struct perf_evlist *evlist)
{
struct perf_evsel *evsel;
perf_evlist__for_each_evsel(evlist, evsel)
__perf_evlist__propagate_maps(evlist, evsel);
}
void perf_evlist__add(struct perf_evlist *evlist,
struct perf_evsel *evsel)
{
list_add_tail(&evsel->node, &evlist->entries);
evlist->nr_entries += 1;
__perf_evlist__propagate_maps(evlist, evsel);
}
void perf_evlist__remove(struct perf_evlist *evlist,
struct perf_evsel *evsel)
{
list_del_init(&evsel->node);
evlist->nr_entries -= 1;
}
struct perf_evlist *perf_evlist__new(void)
{
struct perf_evlist *evlist = zalloc(sizeof(*evlist));
if (evlist != NULL)
perf_evlist__init(evlist);
return evlist;
}
struct perf_evsel *
perf_evlist__next(struct perf_evlist *evlist, struct perf_evsel *prev)
{
struct perf_evsel *next;
if (!prev) {
next = list_first_entry(&evlist->entries,
struct perf_evsel,
node);
} else {
next = list_next_entry(prev, node);
}
/* Empty list is noticed here so don't need checking on entry. */
if (&next->node == &evlist->entries)
return NULL;
return next;
}
void perf_evlist__delete(struct perf_evlist *evlist)
{
free(evlist);
}
void perf_evlist__set_maps(struct perf_evlist *evlist,
struct perf_cpu_map *cpus,
struct perf_thread_map *threads)
{
/*
* Allow for the possibility that one or another of the maps isn't being
* changed i.e. don't put it. Note we are assuming the maps that are
* being applied are brand new and evlist is taking ownership of the
* original reference count of 1. If that is not the case it is up to
* the caller to increase the reference count.
*/
if (cpus != evlist->cpus) {
perf_cpu_map__put(evlist->cpus);
evlist->cpus = perf_cpu_map__get(cpus);
}
if (threads != evlist->threads) {
perf_thread_map__put(evlist->threads);
evlist->threads = perf_thread_map__get(threads);
}
perf_evlist__propagate_maps(evlist);
}
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