From d5bc056e73841d4bc941474a342ef9b6a207ac84 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Tue, 8 Sep 2015 10:58:51 +0300 Subject: [PATCH] perf evlist: Remove redundant validation from propagate_maps() The validation checks that the values that were just assigned, got assigned i.e. the error can't ever happen. Subsequent patches will call this code in places where errors are not being returned. Changing those code paths to return this non-existent error is counter-productive, so just remove it. That in turn results in perf_evlist__set_maps not needing to return an error, but callers aren't checking it either, so remove that too. Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: Kan Liang Link: http://lkml.kernel.org/r/1441699142-18905-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evlist.c | 21 ++++++++------------- tools/perf/util/evlist.h | 5 ++--- 2 files changed, 10 insertions(+), 16 deletions(-) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 9cb9296cc4f8..785bfd392039 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1103,8 +1103,8 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages, return perf_evlist__mmap_ex(evlist, pages, overwrite, 0, false); } -static int perf_evlist__propagate_maps(struct perf_evlist *evlist, - bool has_user_cpus) +static void perf_evlist__propagate_maps(struct perf_evlist *evlist, + bool has_user_cpus) { struct perf_evsel *evsel; @@ -1119,13 +1119,7 @@ static int perf_evlist__propagate_maps(struct perf_evlist *evlist, } evsel->threads = thread_map__get(evlist->threads); - - if ((evlist->cpus && !evsel->cpus) || - (evlist->threads && !evsel->threads)) - return -ENOMEM; } - - return 0; } int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target) @@ -1144,7 +1138,9 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target) if (evlist->cpus == NULL) goto out_delete_threads; - return perf_evlist__propagate_maps(evlist, !!target->cpu_list); + perf_evlist__propagate_maps(evlist, !!target->cpu_list); + + return 0; out_delete_threads: thread_map__put(evlist->threads); @@ -1152,9 +1148,8 @@ out_delete_threads: return -1; } -int perf_evlist__set_maps(struct perf_evlist *evlist, - struct cpu_map *cpus, - struct thread_map *threads) +void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus, + struct thread_map *threads) { cpu_map__put(evlist->cpus); evlist->cpus = cpus; @@ -1162,7 +1157,7 @@ int perf_evlist__set_maps(struct perf_evlist *evlist, thread_map__put(evlist->threads); evlist->threads = threads; - return perf_evlist__propagate_maps(evlist, false); + perf_evlist__propagate_maps(evlist, false); } int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel) diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index b39a6198f4ac..da2fa9172bd6 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -155,9 +155,8 @@ int perf_evlist__enable_event_idx(struct perf_evlist *evlist, void perf_evlist__set_selected(struct perf_evlist *evlist, struct perf_evsel *evsel); -int perf_evlist__set_maps(struct perf_evlist *evlist, - struct cpu_map *cpus, - struct thread_map *threads); +void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus, + struct thread_map *threads); int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target); int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel); -- 2.20.1