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| author | Petr Tesarik <petr.tesarik.ext@huawei.com> | 2023-08-01 08:23:57 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2023-08-01 18:02:09 +0200 |
| commit | 05ee774122bd4a2f298668d6d5fc9e7b685a5e31 (patch) | |
| tree | 7144d0ef02ca1d93c0355de1ad5fa8349dadd3db /mm/slab_common.c | |
| parent | swiotlb: bail out of swiotlb_init_late() if swiotlb is already allocated (diff) | |
| download | linux-05ee774122bd4a2f298668d6d5fc9e7b685a5e31.tar.xz linux-05ee774122bd4a2f298668d6d5fc9e7b685a5e31.zip | |
swiotlb: make io_tlb_default_mem local to swiotlb.c
SWIOTLB implementation details should not be exposed to the rest of the
kernel. This will allow to make changes to the implementation without
modifying non-swiotlb code.
To avoid breaking existing users, provide helper functions for the few
required fields.
As a bonus, using a helper function to initialize struct device allows to
get rid of an #ifdef in driver core.
Signed-off-by: Petr Tesarik <petr.tesarik.ext@huawei.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'mm/slab_common.c')
| -rw-r--r-- | mm/slab_common.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index d1555ea2981a..c639dba9a3b7 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -864,10 +864,9 @@ void __init setup_kmalloc_cache_index_table(void) static unsigned int __kmalloc_minalign(void) { -#ifdef CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC - if (io_tlb_default_mem.nslabs) + if (IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) && + is_swiotlb_allocated()) return ARCH_KMALLOC_MINALIGN; -#endif return dma_get_cache_alignment(); } |