1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index f783df416726..fd24b1f9ac43 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -38,6 +38,7 @@ enum trace_type {
         TRACE_USER_STACK,
         TRACE_BLK,
         TRACE_BPUTS,
+        TRACE_HWLAT,
 
         __TRACE_LAST_TYPE,
 };
@@ -213,6 +214,8 @@ struct trace_array {
          */
         struct trace_buffer     max_buffer;
         bool                    allocated_snapshot;
+#endif
+#if defined(CONFIG_TRACER_MAX_TRACE) || defined(CONFIG_HWLAT_TRACER)
         unsigned long           max_latency;
 #endif
         struct trace_pid_list   __rcu *filtered_pids;
@@ -326,6 +329,7 @@ extern void __ftrace_bad_type(void);
                 IF_ASSIGN(var, ent, struct print_entry, TRACE_PRINT);   \
                 IF_ASSIGN(var, ent, struct bprint_entry, TRACE_BPRINT); \
                 IF_ASSIGN(var, ent, struct bputs_entry, TRACE_BPUTS);   \
+                IF_ASSIGN(var, ent, struct hwlat_entry, TRACE_HWLAT);   \
                 IF_ASSIGN(var, ent, struct trace_mmiotrace_rw,          \
                           TRACE_MMIO_RW);                               \
                 IF_ASSIGN(var, ent, struct trace_mmiotrace_map,         \
@@ -571,6 +575,7 @@ void tracing_reset_current(int cpu);
 void tracing_reset_all_online_cpus(void);
 int tracing_open_generic(struct inode *inode, struct file *filp);
 bool tracing_is_disabled(void);
+int tracer_tracing_is_on(struct trace_array *tr);
 struct dentry *trace_create_file(const char *name,
                                  umode_t mode,
                                  struct dentry *parent,