Version 2.5.7

[lttng-ust.git] / libringbuffer / frontend_api.h

diff --git a/libringbuffer/frontend_api.h b/libringbuffer/frontend_api.h
index b5406b0ef9d3678d44f706b23d66117b5659fd9e..56dbef2aa4326c8a4067ecc96ada66b887358afd 100644 (file)
--- a/libringbuffer/frontend_api.h
+++ b/libringbuffer/frontend_api.h
@@ -126,6 +126,14 @@ int lib_ring_buffer_try_reserve(const struct lttng_ust_lib_ring_buffer_config *c
         * boundary. It's safe to write.
         */
        *o_end = *o_begin + ctx->slot_size;
+
+       if (caa_unlikely((subbuf_offset(*o_end, chan)) == 0))
+               /*
+                * The offset_end will fall at the very beginning of the next
+                * subbuffer.
+                */
+               return 1;
+
        return 0;
 }
 
@@ -280,14 +288,13 @@ void lib_ring_buffer_commit(const struct lttng_ust_lib_ring_buffer_config *confi
        commit_count = v_read(config, &shmp_index(handle, buf->commit_hot, endidx)->cc);
 
        lib_ring_buffer_check_deliver(config, buf, chan, offset_end - 1,
-                                     commit_count, endidx, handle);
+                                     commit_count, endidx, handle, ctx->tsc);
        /*
         * Update used size at each commit. It's needed only for extracting
         * ring_buffer buffers from vmcore, after crash.
         */
        lib_ring_buffer_write_commit_counter(config, buf, chan, endidx,
-                                            ctx->buf_offset, commit_count,
-                                            ctx->slot_size, handle);
+                       offset_end, commit_count, handle);
 }
 
 /**