X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=lib%2Fringbuffer%2Ffrontend_types.h;h=63cd1e8ca54ba49b22ae6d308b7f0c46ea121833;hb=e4169397bcabe72c5acabcd5e6a9bb84e4001db7;hp=837a926ff2ebe54211486873f2db77193103505f;hpb=fc94c945a818ebfff1b05c08d11cef564208749c;p=lttng-modules.git

diff --git a/lib/ringbuffer/frontend_types.h b/lib/ringbuffer/frontend_types.h
index 837a926f..63cd1e8c 100644
--- a/lib/ringbuffer/frontend_types.h
+++ b/lib/ringbuffer/frontend_types.h
@@ -53,7 +53,7 @@ struct channel {
 
 	unsigned long switch_timer_interval;	/* Buffer flush (jiffies) */
 	unsigned long read_timer_interval;	/* Reader wakeup (jiffies) */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 	struct lttng_cpuhp_node cpuhp_prepare;
 	struct lttng_cpuhp_node cpuhp_online;
 	struct lttng_cpuhp_node cpuhp_iter_online;
@@ -120,6 +120,20 @@ struct lib_ring_buffer {
 
 	struct commit_counters_cold *commit_cold;
 					/* Commit count per sub-buffer */
+	u64 *ts_end;			/*
+					 * timestamp_end per sub-buffer.
+					 * Time is sampled by the
+					 * switch_*_end() callbacks which
+					 * are the last space reservation
+					 * performed in the sub-buffer
+					 * before it can be fully
+					 * committed and delivered. This
+					 * time value is then read by
+					 * the deliver callback,
+					 * performed by the last commit
+					 * before the buffer becomes
+					 * readable.
+					 */
 	atomic_long_t active_readers;	/*
 					 * Active readers count
 					 * standard atomic access (shared)