Corresponding kernel commit 54895010a893 ("drm/i915: Add an rcu_barrier
option to i915_drop_caches")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx>
---
lib/igt_debugfs.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h
index 36b638177..a56f09dd2 100644
--- a/lib/igt_debugfs.h
+++ b/lib/igt_debugfs.h
@@ -172,6 +172,13 @@ void igt_require_hpd_storm_ctl(int fd);
* Reset the global request seqno counter back to 0
*/
#define DROP_RESET_SEQNO 0x100
+/**
+ * DROP_RCU:
+ *
+ * Performs rcu_barrier() and waits for an RCU grace period to complete,
+ * which will flush any RCU callbacks and deferred tasks.
+ */
+#define DROP_RCU 0x200
/**
* DROP_ALL:
*
--
2.23.0
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