1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/bus_gk20a.h b/drivers/gpu/nvgpu/gk20a/bus_gk20a.h
index 72710c35..088c385e 100644
--- a/drivers/gpu/nvgpu/gk20a/bus_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/bus_gk20a.h
@@ -22,10 +22,19 @@ struct gk20a;
 struct gpu_ops;
 struct nvgpu_mem;
 
+struct nvgpu_cpu_time_correlation_sample {
+        u64 cpu_timestamp;
+        u64 gpu_timestamp;
+};
+
 void gk20a_init_bus(struct gpu_ops *gops);
 
 void gk20a_bus_isr(struct gk20a *g);
 int gk20a_read_ptimer(struct gk20a *g, u64 *value);
 void gk20a_bus_init_hw(struct gk20a *g);
 
+int gk20a_get_timestamps_zipper(struct gk20a *g,
+                u32 source_id, u32 count,
+                struct nvgpu_cpu_time_correlation_sample *samples);
+
 #endif /* GK20A_H */