Commit 6e675a1c authored by Claire Chang's avatar Claire Chang Committed by Konrad Rzeszutek Wilk
Browse files

swiotlb: Refactor swiotlb_create_debugfs 



Split the debugfs creation to make the code reusable for supporting
different bounce buffer pools.

Signed-off-by: default avatarClaire Chang <tientzu@chromium.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Tested-by: default avatarStefano Stabellini <sstabellini@kernel.org>
Tested-by: default avatarWill Deacon <will@kernel.org>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 0a65579c

kernel/dma/swiotlb.c

+14 −7
Original line number Diff line number Diff line
@@ -669,19 +669,26 @@ 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