Messages in this thread | | | Date | Wed, 30 May 2012 09:15:53 +0200 | From | Marek Szyprowski <> | Subject | RE: [PATCHv2 4/4] ARM: dma-mapping: remove custom consistent dma region |
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Hello,
On Wednesday, May 30, 2012 2:11 AM KOSAKI Motohiro wrote:
> > static void * > > __dma_alloc_remap(struct page *page, size_t size, gfp_t gfp, pgprot_t prot, > > const void *caller) > > { > > - struct arm_vmregion *c; > > - size_t align; > > - int bit; > > + struct vm_struct *area; > > + unsigned long addr; > > > > - if (!consistent_pte) { > > - printk(KERN_ERR "%s: not initialised\n", __func__); > > + area = get_vm_area_caller(size, VM_DMA | VM_USERMAP, caller); > > In this patch, VM_DMA is only used here. So, is this no effect?
I introduced it mainly to let user know which areas have been allocated by the dma-mapping api.
I also plan to add a check suggested by Minchan Kim in __dma_free_remap() if the vmalloc area have been in fact allocated with VM_DMA set.
Best regards -- Marek Szyprowski Samsung Poland R&D Center
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