Split the debugfs creation to make the code reusable for supporting different bounce buffer pools, e.g. restricted DMA pool.
Signed-off-by: Claire Chang tientzu@chromium.org --- kernel/dma/swiotlb.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 3f1adee35097..57a9adb920bf 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -660,18 +660,24 @@ EXPORT_SYMBOL_GPL(is_swiotlb_active);
#ifdef CONFIG_DEBUG_FS
-static int __init swiotlb_create_debugfs(void) +static void swiotlb_create_debugfs(struct io_tlb_mem *mem, const char *name, + struct dentry *node) { - struct io_tlb_mem *mem = io_tlb_default_mem; - if (!mem) - return 0; - mem->debugfs = debugfs_create_dir("swiotlb", NULL); + return; + + mem->debugfs = debugfs_create_dir(name, node); debugfs_create_ulong("io_tlb_nslabs", 0400, mem->debugfs, &mem->nslabs); debugfs_create_ulong("io_tlb_used", 0400, mem->debugfs, &mem->used); +} + +static int __init swiotlb_create_default_debugfs(void) +{ + swiotlb_create_debugfs(io_tlb_default_mem, "swiotlb", NULL); + return 0; }
-late_initcall(swiotlb_create_debugfs); +late_initcall(swiotlb_create_default_debugfs);
#endif