perf evlist: Add helper to check if attr.exclude_kernel is set in all evsels

The warning about kptr_restrict needs to be emitted only when it is set
and we ask for kernel space samples, so add a helper to help with that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fh7drty6yljei9gxxzer6eup@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index ccb749f9a83f96a2499b3c98982775b75f072803..b62e523a70352f40cdb4c90b7284858065d6fafa 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -1786,3 +1786,15 @@ void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist,
 state_err:
        return;
 }
+
+bool perf_evlist__exclude_kernel(struct perf_evlist *evlist)
+{
+       struct perf_evsel *evsel;
+
+       evlist__for_each_entry(evlist, evsel) {
+               if (!evsel->attr.exclude_kernel)
+                       return false;
+       }
+
+       return true;
+}

diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index e72ae64c11acb5214d82996d9c21498b1d34547e..491f69542920978f4be31dea49d8ae47aa98b155 100644 (file)
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -312,4 +312,6 @@ perf_evlist__find_evsel_by_str(struct perf_evlist *evlist, const char *str);
 
 struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
                                            union perf_event *event);
+
+bool perf_evlist__exclude_kernel(struct perf_evlist *evlist);
 #endif /* __PERF_EVLIST_H */