gallium/pb_bufmgr_cache: add a way to remove buffers from the cache explicitly

This must be done before exporting a buffer as dmabuf fds, because
we lose track of who is using it and can't trust the reference counter.

Cc: 11.0 <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
index 147ce39041c..1638d96a63b 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
@@ -166,6 +166,11 @@ pb_cache_manager_create(struct pb_manager *provider,
                         unsigned bypass_usage,
                         uint64_t maximum_cache_size);
 
+/**
+ * Remove a buffer from the cache, but keep it alive.
+ */
+void
+pb_cache_manager_remove_buffer(struct pb_buffer *buf);
 
 struct pb_fence_ops;