If configured to use atomic builtins, implement SMP memory barriers in
term of atomic builtins if the architecture does not implement its own
version.
Change-Id: Iddc4283606e0fce572e104d2d3f03b5c0d9926fb
Co-authored-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com>
Signed-off-by: Olivier Dion <od...@efficios.com>
---
include/urcu/arch/generic.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/urcu/arch/generic.h b/include/urcu/arch/generic.h
index be6e41e..e292c70 100644
--- a/include/urcu/arch/generic.h
+++ b/include/urcu/arch/generic.h
@@ -43,6 +43,14 @@ extern "C" {
* GCC builtins) as well as cmm_rmb and cmm_wmb (defaulting to cmm_mb).
*/
+#ifdef CONFIG_RCU_USE_ATOMIC_BUILTINS
+
+# ifndef cmm_smp_mb
+# define cmm_smp_mb() __atomic_thread_fence(__ATOMIC_SEQ_CST)
+# endif
+
+#endif /* CONFIG_RCU_USE_ATOMIC_BUILTINS */
+
#ifndef cmm_mb
#define cmm_mb() __sync_synchronize()
#endif
--
2.40.1
_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
