Merge remote-tracking branch 'tip/perf/urgent' into perf/core

Merge reason: We are going to queue up a dependent patch:

"perf tools: Move parse event automated tests to separated object"

That depends on:

commit e7c72d8
perf tools: Add 'G' and 'H' modifiers to event parsing

Conflicts:
	tools/perf/builtin-stat.c

Conflicted with the recent 'perf_target' patches when checking the
result of perf_evsel open routines to see if a retry is needed to cope
with older kernels where the exclude guest/host perf_event_attr bits
were not used.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 30 insertions, 5 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 0f4b51ae4be7..62ae30d34fa6 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -282,6 +282,8 @@ static int create_perf_stat_counter(struct perf_evsel *evsel,
 {
         struct perf_event_attr *attr = &evsel->attr;
         struct xyarray *group_fd = NULL;
+        bool exclude_guest_missing = false;
+        int ret;
 
         if (group && evsel != first)
                 group_fd = first->fd;
@@ -292,16 +294,39 @@ static int create_perf_stat_counter(struct perf_evsel *evsel,
 
         attr->inherit = !no_inherit;
 
-        if (perf_target__has_cpu(&target))
-                return perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
-                                                group, group_fd);
+retry:
+        if (exclude_guest_missing)
+                evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
+
+        if (perf_target__has_cpu(&target)) {
+                ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
+                                               group, group_fd);
+                if (ret)
+                        goto check_ret;
+                return 0;
+        }
+
         if (!perf_target__has_task(&target) && (!group || evsel == first)) {
                 attr->disabled = 1;
                 attr->enable_on_exec = 1;
         }
 
-        return perf_evsel__open_per_thread(evsel, evsel_list->threads,
-                                           group, group_fd);
+        ret = perf_evsel__open_per_thread(evsel, evsel_list->threads,
+                                          group, group_fd);
+        if (!ret)
+                return 0;
+        /* fall through */
+check_ret:
+        if (ret && errno == EINVAL) {
+                if (!exclude_guest_missing &&
+                    (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
+                        pr_debug("Old kernel, cannot exclude "
+                                 "guest or host samples.\n");
+                        exclude_guest_missing = true;
+                        goto retry;
+                }
+        }
+        return ret;
 }
 
 /*