Messages in this thread | | | Subject | Re: __vmalloc with GFP_ATOMIC causes 'sleeping from invalid context' | From | Alan Cox <> | Date | Mon, 23 Oct 2006 11:38:14 +0100 |
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Ar Llu, 2006-10-23 am 02:13 -0400, ysgrifennodd Giridhar Pemmasani: > Synopsis of patch: If __vmalloc is called to allocate memory with > GFP_ATOMIC in atomic context, the chain of calls results in > __get_vm_area_node allocating memory for vm_struct with GFP_KERNEL
You are not allowed to call vmalloc in atomic context, especially in interrupt paths. Vmalloc has to do TLB handling work and that can involve cross calls and other stuff that isn't IRQ friendly on all platforms.
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