Split the debugfs creation to make the code reusable for supporting different bounce buffer pools.
Signed-off-by: Claire Chang tientzu@chromium.org --- kernel/dma/swiotlb.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index c64298e416c8..97c6ad50fdc2 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -661,19 +661,26 @@ bool is_swiotlb_active(void) EXPORT_SYMBOL_GPL(is_swiotlb_active);
#ifdef CONFIG_DEBUG_FS +static struct dentry *debugfs_dir;
-static int __init swiotlb_create_debugfs(void) +static void swiotlb_create_debugfs_files(struct io_tlb_mem *mem) { - struct io_tlb_mem *mem = io_tlb_default_mem; - - if (!mem) - return 0; - mem->debugfs = debugfs_create_dir("swiotlb", NULL); 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) +{ + struct io_tlb_mem *mem = io_tlb_default_mem; + + debugfs_dir = debugfs_create_dir("swiotlb", NULL); + if (mem) { + mem->debugfs = debugfs_dir; + swiotlb_create_debugfs_files(mem); + } return 0; }
-late_initcall(swiotlb_create_debugfs); +late_initcall(swiotlb_create_default_debugfs);
#endif