In case that all pre-allocated BOs are busy, just continue to populate
BOs since likely half of system memory in total is still free.
Signed-off-by: Shiwu Zhang <shiwu.zhang@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_device.c | 4 ++--
drivers/gpu/drm/ttm/ttm_tt.c | 2 ++
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c
index 1f2024164d72..0200709db9be 100644
--- a/drivers/gpu/drm/ttm/ttm_device.c
+++ b/drivers/gpu/drm/ttm/ttm_device.c
@@ -133,7 +133,7 @@ int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
struct ttm_resource_manager *man;
struct ttm_buffer_object *bo;
unsigned i, j;
- int ret;
+ int ret=-EBUSY;
spin_lock(&bdev->lru_lock);
for (i = TTM_PL_SYSTEM; i < TTM_NUM_MEM_TYPES; ++i) {
@@ -161,7 +161,7 @@ int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
}
}
spin_unlock(&bdev->lru_lock);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(ttm_device_swapout);
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 48c407cff112..4e1e06a04428 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -329,6 +329,8 @@ int ttm_tt_populate(struct ttm_device *bdev,
ttm_dma32_pages_limit) {
ret = ttm_global_swapout(ctx, GFP_KERNEL);
+ if (ret == -EBUSY)
+ break;
if (ret < 0)
goto error;
}
--
2.17.1
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