Messages in this thread | | | Date | Fri, 30 Nov 2007 00:06:42 +0100 | From | "Alejandro Homs Puron" <> | Subject | alloc_page_vma: should be called from a module? (not exported in x86_64) |
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Hi,
We've developed a driver for an image acquisition card, which maps kernel alloc'ed buffers into user space vma's. We use alloc_page + remap_pfn_range in the driver mmap file_operation.
After looking at alloc_page_vma, I thought that it might be more appropiate than alloc_page in this context. However, if CONFIG_NUMA=y (x86_64), this function is not visible to modules.
Is this limitation intentional?
We alloc RAM in a page-by-page basis. Is vm_insert_page more appropiate than remap_pfn_range?
Thanks a lot for your help.
Alejandro - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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