Commit 934e0f20 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo

perf evlist: Make set_maps() more resilient

Make perf_evlist__set_maps() more resilient by allowing for the
possibility that one or another of the maps isn't being changed and
therefore should not be "put".
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Link: http://lkml.kernel.org/r/1441699142-18905-9-git-send-email-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent fce4d296
...@@ -1155,11 +1155,22 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target) ...@@ -1155,11 +1155,22 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target)
void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus, void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus,
struct thread_map *threads) struct thread_map *threads)
{ {
cpu_map__put(evlist->cpus); /*
evlist->cpus = cpus; * 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) {
cpu_map__put(evlist->cpus);
evlist->cpus = cpus;
}
thread_map__put(evlist->threads); if (threads != evlist->threads) {
evlist->threads = threads; thread_map__put(evlist->threads);
evlist->threads = threads;
}
perf_evlist__propagate_maps(evlist); perf_evlist__propagate_maps(evlist);
} }
......
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