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Subject[tip: core/rcu] rcutorture: Add KCSAN stubs
The following commit has been merged into the core/rcu branch of tip:

Commit-ID: 3b2a47398552938d2ae0091f35eb3658a52a0769
Gitweb: https://git.kernel.org/tip/3b2a47398552938d2ae0091f35eb3658a52a0769
Author: Paul E. McKenney <paulmck@kernel.org>
AuthorDate: Mon, 13 Apr 2020 16:30:35 -07:00
Committer: Paul E. McKenney <paulmck@kernel.org>
CommitterDate: Mon, 27 Apr 2020 11:05:13 -07:00

rcutorture: Add KCSAN stubs

This commit adds stubs for KCSAN's data_race(), ASSERT_EXCLUSIVE_WRITER(),
and ASSERT_EXCLUSIVE_ACCESS() macros to allow code using these macros to
move ahead.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/rcu/rcutorture.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 5453bd5..7e2ea0c 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -51,6 +51,18 @@
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Paul E. McKenney <paulmck@linux.ibm.com> and Josh Triplett <josh@joshtriplett.org>");

+#ifndef data_race
+#define data_race(expr) \
+ ({ \
+ expr; \
+ })
+#endif
+#ifndef ASSERT_EXCLUSIVE_WRITER
+#define ASSERT_EXCLUSIVE_WRITER(var) do { } while (0)
+#endif
+#ifndef ASSERT_EXCLUSIVE_ACCESS
+#define ASSERT_EXCLUSIVE_ACCESS(var) do { } while (0)
+#endif

/* Bits for ->extendables field, extendables param, and related definitions. */
#define RCUTORTURE_RDR_SHIFT 8 /* Put SRCU index in upper bits. */
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