diff options
| -rw-r--r-- | Documentation/kernel-parameters.txt | 6 | ||||
| -rw-r--r-- | lib/swiotlb.c | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index be6ba33d4ff1..8f441dab0396 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3124,7 +3124,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted. controller if no parameter or 1 is given or disable it if 0 is given (See Documentation/cgroups/memory.txt) - swiotlb= [IA-64] Number of I/O TLB slabs + swiotlb= [ARM,IA-64,PPC,MIPS,X86] + Format: { <int> | force } + <int> -- Number of I/O TLB slabs + force -- force using of bounce buffers even if they + wouldn't be automatically used by the kernel switches= [HW,M68k] diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 615f3de4b5ce..2e1c102759ce 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -510,7 +510,8 @@ 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); |