Merge tag 'v4.4.12' into linux-linaro-lsk-v4.4

[firefly-linux-kernel-4.4.55.git] / include / linux / coresight.h

diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 9fa92dcdd2eaf1d6d49fac9e41d1b4cca252a486..385d62e64abb00218d5f52f32bd1875dde5b7b43 100644 (file)
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -182,12 +182,29 @@ struct coresight_device {
 /**
  * struct coresight_ops_sink - basic operations for a sink
  * Operations available for sinks
- * @enable:    enables the sink.
- * @disable:   disables the sink.
+ * @enable:            enables the sink.
+ * @disable:           disables the sink.
+ * @alloc_buffer:      initialises perf's ring buffer for trace collection.
+ * @free_buffer:       release memory allocated in @get_config.
+ * @set_buffer:                initialises buffer mechanic before a trace session.
+ * @reset_buffer:      finalises buffer mechanic after a trace session.
+ * @update_buffer:     update buffer pointers after a trace session.
  */
 struct coresight_ops_sink {
        int (*enable)(struct coresight_device *csdev, u32 mode);
        void (*disable)(struct coresight_device *csdev);
+       void *(*alloc_buffer)(struct coresight_device *csdev, int cpu,
+                             void **pages, int nr_pages, bool overwrite);
+       void (*free_buffer)(void *config);
+       int (*set_buffer)(struct coresight_device *csdev,
+                         struct perf_output_handle *handle,
+                         void *sink_config);
+       unsigned long (*reset_buffer)(struct coresight_device *csdev,
+                                     struct perf_output_handle *handle,
+                                     void *sink_config, bool *lost);
+       void (*update_buffer)(struct coresight_device *csdev,
+                             struct perf_output_handle *handle,
+                             void *sink_config);
 };
 
 /**