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i965: Track when a bo is shared with an external client

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If the buffer is being shared with an external client, our own state
tracking may be stale and in some cases we may wish to double check with
the kernel/hw state. At the moment, this is synonymous with not being
reusable, but the semantics between reusable and external are quite
different and we will have more examples of non-reusable buffers in the
near future.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Chris Wilson
2017-06-19 11:55:00 +01:00
committed by Kenneth Graunke
parent c2c37f5185
commit b532e3b4a2
2 changed files with 9 additions and 0 deletions
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4
src/mesa/drivers/dri/i965/brw_bufmgr.c
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@@ -483,6 +483,7 @@ brw_bo_gem_create_from_name(struct brw_bufmgr *bufmgr,
bo->name = name;
bo->global_name = handle;
bo->reusable = false;
bo->external = true;
_mesa_hash_table_insert(bufmgr->handle_table, &bo->gem_handle, bo);
_mesa_hash_table_insert(bufmgr->name_table, &bo->global_name, bo);
@@ -997,6 +998,7 @@ brw_bo_gem_create_from_prime(struct brw_bufmgr *bufmgr, int prime_fd)
bo->name = "prime";
bo->reusable = false;
bo->external = true;
memclear(get_tiling);
get_tiling.handle = bo->gem_handle;
@@ -1027,6 +1029,7 @@ brw_bo_gem_export_to_prime(struct brw_bo *bo, int *prime_fd)
return -errno;
bo->reusable = false;
bo->external = true;
return 0;
}
@@ -1048,6 +1051,7 @@ brw_bo_flink(struct brw_bo *bo, uint32_t *name)
if (!bo->global_name) {
bo->global_name = flink.name;
bo->reusable = false;
bo->external = true;
_mesa_hash_table_insert(bufmgr->name_table, &bo->global_name, bo);
}

5
src/mesa/drivers/dri/i965/brw_bufmgr.h
View File

@@ -123,6 +123,11 @@ struct brw_bo {
*/
bool reusable;
/**
* Boolean of whether this buffer has been shared with an external client.
*/
bool external;
/**
* Boolean of whether this buffer is cache coherent
*/