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freedreno/drm: Avoid CPU_PREP ioctl if bo is idle

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With userspace fences, if we know definitely that the buffer is idle
(which implies that it is not shared with other processes, etc), then
skip the ioctl.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14900>
This commit is contained in:
Rob Clark 2022-02-10 09:31:16 -08:00 • committed by Marge Bot
parent 9bcc983256
commit 88a10c6216
1 changed files with 7 additions and 7 deletions
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14
src/freedreno/drm/freedreno_bo.c
View file

@ -503,14 +503,14 @@ fd_bo_upload(struct fd_bo *bo, void *src, unsigned len)
int
fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
simple_mtx_lock(&table_lock);
enum fd_bo_state state = fd_bo_state(bo);
simple_mtx_unlock(&table_lock);
if (state == FD_BO_STATE_IDLE)
return 0;
if (op & (FD_BO_PREP_NOSYNC | FD_BO_PREP_FLUSH)) {
simple_mtx_lock(&table_lock);
enum fd_bo_state state = fd_bo_state(bo);
simple_mtx_unlock(&table_lock);
if (state == FD_BO_STATE_IDLE)
return 0;
if (op & FD_BO_PREP_FLUSH)
bo_flush(bo);