[PATCH v6 14/19] swiotlb: print a warning when the swiotlb is full
From: Stefano Stabellini <hidden>
Date: 2013-09-27 16:35:37
Also in:
lkml, xen-devel
Subsystem:
library code, the rest, xen hypervisor interface, xen swiotlb subsystem · Maintainers:
Andrew Morton, Linus Torvalds, Juergen Gross, Stefano Stabellini
Signed-off-by: Stefano Stabellini <redacted> --- drivers/xen/swiotlb-xen.c | 1 + lib/swiotlb.c | 1 + 2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 96ad316..790c2eb 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c@@ -674,6 +674,7 @@ xen_swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, sg->length, dir); if (map == SWIOTLB_MAP_ERROR) { + pr_warn("swiotlb buffer is full\n"); /* Don't panic here, we expect map_sg users to do proper error handling. */ xen_swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index eb45d17..f06da0d 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c@@ -502,6 +502,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, not_found: spin_unlock_irqrestore(&io_tlb_lock, flags); + pr_warn("swiotlb buffer is full\n"); return SWIOTLB_MAP_ERROR; found: spin_unlock_irqrestore(&io_tlb_lock, flags);
--
1.7.2.5