Namespace kernel version macros

[lttng-modules.git] / lib / ringbuffer / frontend_types.h

diff --git a/lib/ringbuffer/frontend_types.h b/lib/ringbuffer/frontend_types.h
index 2b0c93291429d6139dffdeda7490bf1b62715e8d..b37f4aa654f227fa126aa61e8798423045bc8849 100644 (file)
--- a/lib/ringbuffer/frontend_types.h
+++ b/lib/ringbuffer/frontend_types.h
@@ -54,7 +54,7 @@ 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;
@@ -121,6 +121,20 @@ 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)