Allocating kernel memory

From: George Nelson (grn_at_freeuk.com)
Date: 05/06/04

  • Next message: Juha Laiho: "Re: "Headless" Linux & agetty Issues" 
    Date: 6 May 2004 10:41:34 -0700

    Other than the amount of free memory available, is there a limit to
    how much memory a driver can allocate (in total, not as a single
    request)? I am working on a driver that requires large amounts of
    memory and although I have 2GB on my system, the total memory my
    driver seems to be able to allocate is around 620MB. Most of the 2GB
    are free when my driver loads (from a sysinfo call), I am running very
    little in user space and very light load on the file system so I can't
    understand why my memory requests fail at the 620MB limit.

    I would appreciate any pointers as to how I can get more memory. The
    driver uses a number of slab caches from which it makes allocations
    although the largest requests are for I/O buffers where I allocate
    using get_free_pages.

    Many thanks in advance,

    George Nelson

  • Next message: Juha Laiho: "Re: "Headless" Linux & agetty Issues"

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