Fix: sample discarded events count before reserve

[lttng-modules.git] / include / ringbuffer / config.h

diff --git a/include/ringbuffer/config.h b/include/ringbuffer/config.h
index 34f8a5da22e08935c659c8425d47e35184f1a2ff..43523de3055b55414a969d1ac30bee9610615e2c 100644 (file)
--- a/include/ringbuffer/config.h
+++ b/include/ringbuffer/config.h
@@ -44,7 +44,8 @@ struct lttng_kernel_ring_buffer_client_cb {
        void (*buffer_begin) (struct lttng_kernel_ring_buffer *buf, u64 tsc,
                              unsigned int subbuf_idx);
        void (*buffer_end) (struct lttng_kernel_ring_buffer *buf, u64 tsc,
-                           unsigned int subbuf_idx, unsigned long data_size);
+                           unsigned int subbuf_idx, unsigned long data_size,
+                           const struct lttng_kernel_ring_buffer_ctx *ctx);
 
        /* Optional callbacks (can be set to NULL) */
 
@@ -189,6 +190,14 @@ struct lttng_kernel_ring_buffer_ctx_private {
                                                 * for this channel
                                                 */
        struct lttng_kernel_ring_buffer_backend_pages *backend_pages;
+
+       /*
+        * Records lost counts are only loaded into these fields before
+        * reserving the last bytes from the ring buffer.
+        */
+       unsigned long records_lost_full;
+       unsigned long records_lost_wrap;
+       unsigned long records_lost_big;
 };
 
 /*