Cleanup: Move all source files to src/

[lttng-modules.git] / src / wrapper / trace-clock.c

diff --git a/src/wrapper/trace-clock.c b/src/wrapper/trace-clock.c
new file mode 100644 (file)
index 0000000..74995fe
--- /dev/null
+++ b/src/wrapper/trace-clock.c
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * wrapper/trace-clock.c
+ *
+ * Contains LTTng trace clock mapping to LTTng trace clock or mainline monotonic
+ * clock. This wrapper depends on CONFIG_HIGH_RES_TIMERS=y.
+ *
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#include <wrapper/trace-clock.h>
+
+#ifdef LTTNG_USE_NMI_SAFE_CLOCK
+DEFINE_PER_CPU(u64, lttng_last_tsc);
+EXPORT_PER_CPU_SYMBOL(lttng_last_tsc);
+#endif /* #ifdef LTTNG_USE_NMI_SAFE_CLOCK */
+
+#ifdef LTTNG_CLOCK_NMI_SAFE_BROKEN
+#warning "Your kernel implements a bogus nmi-safe clock source. Falling back to the non-nmi-safe clock source, which discards events traced from NMI context. Upgrade your kernel to resolve this situation."
+#endif