mac80211: add basic tracing to drv_get_survey

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 28 insertions, 1 deletions

diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index c33317320eee..14123dce544b 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -375,9 +375,14 @@ static inline int drv_get_survey(struct ieee80211_local *local, int idx,
                                 struct survey_info *survey)
 {
         int ret = -EOPNOTSUPP;
+
+        trace_drv_get_survey(local, idx, survey);
+
         if (local->ops->get_survey)
                 ret = local->ops->get_survey(&local->hw, idx, survey);
-        /* trace_drv_get_survey(local, idx, survey, ret); */
+
+        trace_drv_return_int(local, ret);
+
         return ret;
 }
 
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 8da31caff931..5d5d2a974668 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -761,6 +761,28 @@ TRACE_EVENT(drv_ampdu_action,
         )
 );
 
+TRACE_EVENT(drv_get_survey,
+        TP_PROTO(struct ieee80211_local *local, int idx,
+                 struct survey_info *survey),
+
+        TP_ARGS(local, idx, survey),
+
+        TP_STRUCT__entry(
+                LOCAL_ENTRY
+                __field(int, idx)
+        ),
+
+        TP_fast_assign(
+                LOCAL_ASSIGN;
+                __entry->idx = idx;
+        ),
+
+        TP_printk(
+                LOCAL_PR_FMT " idx:%d",
+                LOCAL_PR_ARG, __entry->idx
+        )
+);
+
 TRACE_EVENT(drv_flush,
         TP_PROTO(struct ieee80211_local *local, bool drop),