X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=lib%2Fringbuffer%2Ffrontend_api.h;h=ff6abce93d684a86e48066ed7fc537a2516fe9b4;hb=7915e163192dc9674bcd7ce80338d9d8ebf23d4c;hp=13975602380bf02e82979c071969be0eaa56612a;hpb=5fb66f07aae4884426f1706d0281bd242a38c2a7;p=lttng-modules.git

diff --git a/lib/ringbuffer/frontend_api.h b/lib/ringbuffer/frontend_api.h
index 13975602..ff6abce9 100644
--- a/lib/ringbuffer/frontend_api.h
+++ b/lib/ringbuffer/frontend_api.h
@@ -125,6 +125,14 @@ int lib_ring_buffer_try_reserve(const struct lib_ring_buffer_config *config,
 	 * boundary. It's safe to write.
 	 */
 	*o_end = *o_begin + ctx->slot_size;
+
+	if (unlikely((subbuf_offset(*o_end, chan)) == 0))
+		/*
+		 * The offset_end will fall at the very beginning of the next
+		 * subbuffer.
+		 */
+		return 1;
+
 	return 0;
 }
 
@@ -284,14 +292,13 @@ void lib_ring_buffer_commit(const struct lib_ring_buffer_config *config,
 	commit_count = v_read(config, &buf->commit_hot[endidx].cc);
 
 	lib_ring_buffer_check_deliver(config, buf, chan, offset_end - 1,
-				      commit_count, endidx);
+				      commit_count, endidx, 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);
+			offset_end, commit_count);
 }
 
 /**