1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index e8ad3c590a23..61448c19a132 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -246,6 +246,7 @@ struct perf_event;
 #define PERF_PMU_CAP_ITRACE                     0x20
 #define PERF_PMU_CAP_HETEROGENEOUS_CPUS         0x40
 #define PERF_PMU_CAP_NO_EXCLUDE                 0x80
+#define PERF_PMU_CAP_AUX_OUTPUT                 0x100
 
 /**
  * struct pmu - generic performance monitoring unit
@@ -447,6 +448,16 @@ struct pmu {
                                         /* optional */
 
         /*
+         * Check if event can be used for aux_output purposes for
+         * events of this PMU.
+         *
+         * Runs from perf_event_open(). Should return 0 for "no match"
+         * or non-zero for "match".
+         */
+        int (*aux_output_match)         (struct perf_event *event);
+                                        /* optional */
+
+        /*
          * Filter events for PMU-specific reasons.
          */
         int (*filter_match)             (struct perf_event *event); /* optional */
@@ -681,6 +692,9 @@ struct perf_event {
         struct perf_addr_filter_range   *addr_filter_ranges;
         unsigned long                   addr_filters_gen;
 
+        /* for aux_output events */
+        struct perf_event               *aux_event;
+
         void (*destroy)(struct perf_event *);
         struct rcu_head                 rcu_head;