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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-12-16 14:05:01 -0500
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2014-01-07 10:15:21 -0500
commit0cb637bff80d5ba2b916bb19f19ffd59cd4079fd (patch)
treeb7ec755b855ff35045ac4ce480a88aaabb9c7a6f /lib/swiotlb.c
parent91fec0f562bd3f8b6b6bdc8fc03fe0d3f320c161 (diff)
downloadlinux-stericsson-0cb637bff80d5ba2b916bb19f19ffd59cd4079fd.tar.gz
swiotlb: Don't DoS us with 'swiotlb buffer is full' (v2)
There is no need for that so lets use ratelimiting. Also add some extra information to be helpful. Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> [v2: s/ld/zs on the printk] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'lib/swiotlb.c')
-rw-r--r--lib/swiotlb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index e4399fa65ad6..4634ac9cdb38 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -505,7 +505,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
not_found:
spin_unlock_irqrestore(&io_tlb_lock, flags);
- dev_warn(hwdev, "swiotlb buffer is full\n");
+ if (printk_ratelimit())
+ dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
return SWIOTLB_MAP_ERROR;
found:
spin_unlock_irqrestore(&io_tlb_lock, flags);