X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=libust%2Fbuffers.c;h=02eaec61b03defe0995c525b407bbc023ea1c4ef;hb=bb9cf413195ca3a68c07059e95df1c50127d5824;hp=c644cfb72ad2ddc50e6fa324d3a17082cf8ed61b;hpb=e17571a59eef2b054c7432f6cba10c2cb467a182;p=lttng-ust.git

diff --git a/libust/buffers.c b/libust/buffers.c
index c644cfb7..02eaec61 100644
--- a/libust/buffers.c
+++ b/libust/buffers.c
@@ -307,8 +307,9 @@ static void ltt_buffer_begin(struct ust_buffer *buf,
 				subbuf_idx * buf->chan->subbuf_size);
 
 	header->cycle_count_begin = tsc;
-	header->lost_size = 0xFFFFFFFF; /* for debugging */
-	header->buf_size = buf->chan->subbuf_size;
+	header->data_size = 0xFFFFFFFF; /* for recognizing crashed buffers */
+	header->sb_size = 0xFFFFFFFF; /* for recognizing crashed buffers */
+	/* FIXME: add memory barrier? */
 	ltt_write_trace_header(channel->trace, header);
 }
 
@@ -323,9 +324,10 @@ static notrace void ltt_buffer_end(struct ust_buffer *buf,
 		(struct ltt_subbuffer_header *)
 			ust_buffers_offset_address(buf,
 				subbuf_idx * buf->chan->subbuf_size);
+	u32 data_size = SUBBUF_OFFSET(offset - 1, buf->chan) + 1;
 
-	header->lost_size = SUBBUF_OFFSET((buf->chan->subbuf_size - offset),
-				buf->chan);
+	header->data_size = data_size;
+	header->sb_size = PAGE_ALIGN(data_size);
 	header->cycle_count_end = tsc;
 	header->events_lost = local_read(&buf->events_lost);
 	header->subbuf_corrupt = local_read(&buf->corrupted_subbuffers);
@@ -1519,6 +1521,7 @@ void ltt_force_switch_lockless_slow(struct ust_buffer *buf,
 
 	offsets.size = 0;
 
+	DBG("Switching (forced) %s_%d", chan->channel_name, buf->cpu);
 	/*
 	 * Perform retryable operations.
 	 */
@@ -1736,6 +1739,7 @@ int ltt_reserve_slot_lockless_slow(struct ust_trace *trace,
 	if (unlikely(offsets.end_switch_old)) {
 //ust//		ltt_clear_noref_flag(chan, buf, SUBBUF_INDEX(offsets.old - 1, chan));
 		ltt_reserve_switch_old_subbuf(chan, buf, &offsets, tsc);
+		DBG("Switching %s_%d", chan->channel_name, cpu);
 	}
 
 	/*