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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-12-16 23:05:01 +0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-01-07 19:15:21 +0400 |
| commit | 0cb637bff80d5ba2b916bb19f19ffd59cd4079fd (patch) | |
| tree | b7ec755b855ff35045ac4ce480a88aaabb9c7a6f /lib/swiotlb.c | |
| parent | 91fec0f562bd3f8b6b6bdc8fc03fe0d3f320c161 (diff) | |
| download | linux-0cb637bff80d5ba2b916bb19f19ffd59cd4079fd.tar.xz | |
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.c | 3 |
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); |