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| author | Claire Chang <tientzu@chromium.org> | 2021-06-19 11:40:33 +0800 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad@kernel.org> | 2021-07-13 20:04:35 -0400 |
| commit | 6e675a1c455ea7579c7eaf1a38fe64267039d6fe (patch) | |
| tree | 5b389d2ff6936bd2b4587ff600e67280207675c7 /kernel/dma/swiotlb.c | |
| parent | 0a65579cdd28bed3e84e1b4929c3080da4f06d79 (diff) | |
| download | linux-stable-6e675a1c455ea7579c7eaf1a38fe64267039d6fe.tar.gz linux-stable-6e675a1c455ea7579c7eaf1a38fe64267039d6fe.tar.bz2 linux-stable-6e675a1c455ea7579c7eaf1a38fe64267039d6fe.zip | |
swiotlb: Refactor swiotlb_create_debugfs
Split the debugfs creation to make the code reusable for supporting
different bounce buffer pools.
Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 414db5fc8de9..ae6a151d0a41 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -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 |