On Mon, Jan 22, 2024 at 12:37:54PM -0800, Isaac J. Manjarres wrote:
When commit 82612d66d51d ("iommu: Allow the dma-iommu api to use bounce buffers") was introduced, it did not add the logic for tracing the bounce buffer usage from iommu_dma_map_page().
All of the users of swiotlb_tbl_map_single() trace their bounce buffer usage, except iommu_dma_map_page(). This makes it difficult to track SWIOTLB usage from that function. Thus, trace bounce buffer usage from iommu_dma_map_page().
Fixes: 82612d66d51d ("iommu: Allow the dma-iommu api to use bounce buffers") Cc: stable@vger.kernel.org # v5.15+ Cc: Tom Murphy murphyt7@tcd.ie Cc: Lu Baolu baolu.lu@linux.intel.com Cc: Saravana Kannan saravanak@google.com Signed-off-by: Isaac J. Manjarres isaacmanjarres@google.com Link: https://lore.kernel.org/r/20231208234141.2356157-1-isaacmanjarres@google.com Signed-off-by: Joerg Roedel jroedel@suse.de (cherry picked from commit a63c357b9fd56ad5fe64616f5b22835252c6a76a) Signed-off-by: Isaac J. Manjarres isaacmanjarres@google.com
Now queued up, thanks.
greg k-h