mirror of https://gitee.com/openkylin/linux.git
54adadf9b0
When an atomic pool becomes fully depleted because it is now relied upon for all non-blocking allocations through the DMA API, allow background expansion of each pool by a kworker. When an atomic pool has less than the default size of memory left, kick off a kworker to dynamically expand the pool in the background. The pool is doubled in size, up to MAX_ORDER-1. If memory cannot be allocated at the requested order, smaller allocation(s) are attempted. This allows the default size to be kept quite low when one or more of the atomic pools is not used. Allocations for lowmem should also use GFP_KERNEL for the benefits of reclaim, so use GFP_KERNEL | GFP_DMA and GFP_KERNEL | GFP_DMA32 for lowmem allocations. This also allows __dma_atomic_pool_init() to return a pointer to the pool to make initialization cleaner. Also switch over some node ids to the more appropriate NUMA_NO_NODE. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| coherent.c | ||
| contiguous.c | ||
| debug.c | ||
| direct.c | ||
| dummy.c | ||
| mapping.c | ||
| pool.c | ||
| remap.c | ||
| swiotlb.c | ||
| virt.c | ||