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authorShiwu Zhang <shiwu.zhang@amd.com>2021-04-22 11:37:49 +0300
committerChristian König <christian.koenig@amd.com>2021-04-23 15:20:38 +0300
commit2a269ba888d3dcf950ef7ceb8421f7ff6aeaa9c0 (patch)
tree07895dfc6f6667cb81b30b1c13b0ffd4f416a4f8 /drivers/gpu
parenta4394b6d0a273941a75ebe86a86d6416d536ed0f (diff)
downloadlinux-2a269ba888d3dcf950ef7ceb8421f7ff6aeaa9c0.tar.xz
drm/ttm: fix error handling if no BO can be swapped out v4
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. v4 (chk): fix code moved to VMWGFX as well Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210422115757.3946-1-christian.koenig@amd.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/ttm/ttm_device.c2
-rw-r--r--drivers/gpu/drm/ttm/ttm_tt.c2
-rw-r--r--drivers/gpu/drm/vmwgfx/ttm_memory.c2
3 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 9b787b3caeb5..510e3e001dab 100644
--- a/drivers/gpu/drm/ttm/ttm_device.c
+++ b/drivers/gpu/drm/ttm/ttm_device.c
@@ -112,7 +112,7 @@ int ttm_global_swapout(struct ttm_operation_ctx *ctx, gfp_t gfp_flags)
{
struct ttm_global *glob = &ttm_glob;
struct ttm_device *bdev;
- int ret = -EBUSY;
+ int ret = 0;
mutex_lock(&ttm_global_mutex);
list_for_each_entry(bdev, &glob->device_list, device_list) {
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index eecc930e97ab..a1a25410ec74 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 == 0)
+ break;
if (ret < 0)
goto error;
}
diff --git a/drivers/gpu/drm/vmwgfx/ttm_memory.c b/drivers/gpu/drm/vmwgfx/ttm_memory.c
index 104b95a8c7a2..aeb0a22a2c34 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_memory.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_memory.c
@@ -280,7 +280,7 @@ static void ttm_shrink(struct ttm_mem_global *glob, bool from_wq,
spin_unlock(&glob->lock);
ret = ttm_global_swapout(ctx, GFP_KERNEL);
spin_lock(&glob->lock);
- if (unlikely(ret < 0))
+ if (unlikely(ret <= 0))
break;
}