lttng abi documentation: clarify getter usage requirements

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index e3a842526dba6af21c5b7d696e7e6424fdb26db8..a4570b7b45a7d175ec2cf03680c7376786464eef 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -27,8 +27,8 @@
 #include <linux/jhash.h>
 #include <linux/uaccess.h>
 #include <linux/vmalloc.h>
+#include <linux/uuid.h>
 
-#include <wrapper/uuid.h>
 #include <wrapper/vmalloc.h>   /* for wrapper_vmalloc_sync_all() */
 #include <wrapper/random.h>
 #include <wrapper/tracepoint.h>
@@ -75,7 +75,12 @@ int _lttng_field_statedump(struct lttng_session *session,
 
 void synchronize_trace(void)
 {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
+       synchronize_rcu();
+#else
        synchronize_sched();
+#endif
+
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
 #ifdef CONFIG_PREEMPT_RT_FULL
        synchronize_rcu();
@@ -1135,8 +1140,8 @@ int lttng_session_list_tracker_pids(struct lttng_session *session)
                ret = PTR_ERR(tracker_pids_list_file);
                goto file_error;
        }
-       if (atomic_long_add_unless(&session->file->f_count,
-               1, INT_MAX) == INT_MAX) {
+       if (!atomic_long_add_unless(&session->file->f_count, 1, LONG_MAX)) {
+               ret = -EOVERFLOW;
                goto refcount_error;
        }
        ret = lttng_tracker_pids_list_fops.open(NULL, tracker_pids_list_file);