Messages in this thread | | | Date | Thu, 13 Oct 2011 15:02:56 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [PATCH -v2 -mm] add extra free kbytes tunable |
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On Thu, 13 Oct 2011, Rik van Riel wrote:
> Userspace cannot be responsible, for the simple reason that > the allocations might be done in the kernel. > > Think about an mlocked realtime program handling network > packets. Memory is allocated when packets come in, and when > the program calls sys_send(), which causes packets to get > sent. > > I don't see how we can make userspace responsible for > kernel-side allocations. >
All of this is what Minchan was proposing by allowing a mempool of kernel memory to be preallocated and managed by the memory controller.
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