Am 20.12.2017 um 15:41 schrieb Michel Dänzer:
On 2017-12-20 02:21 PM, Christian König wrote:
TTM tries to allocate coherent memory in chunks of 2MB first to improve
TLB efficiency and falls back to allocating 4K pages if that fails.
Suppress the warning when the 2MB allocations fails since there is a
valid fall back path.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
lib/swiotlb.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index cea19aaf303c..63a44fb29ce6 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -769,9 +769,11 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
return ret;
err_warn:
- pr_warn("swiotlb: coherent allocation failed for device %s size=%zu\n",
- dev_name(hwdev), size);
- dump_stack();
+ if (!(flags & __GFP_NOWARN)) {
+ pr_warn("swiotlb: coherent allocation failed for device %s
size=%zu\n",
+ dev_name(hwdev), size);
+ dump_stack();
+ }
return NULL;
}
This isn't the only swiotlb message I'm hitting, also this from
swiotlb_tbl_map_single:
radeon 0000:00:01.0: swiotlb buffer is full (sz: 2097152 bytes)
Do you have a full dmesg with that? Cause that is a bit more disturbing.
Christian.
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
