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    SubjectRe: [PATCH v4] mm: cma: add a simple kernel module as the helper to test CMA
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    On Wed, 07 Mar 2012 12:37:39 +0100, Barry Song <Barry.Song@csr.com> wrote:
    > Any write request to /dev/cma_test will let the module to allocate memory from
    > CMA, for example:
    >
    > 1st time
    > $ echo 1024 > /dev/cma_test
    > will require cma_test to request 1MB(1024KB)
    > 2nd time
    > $ echo 2048 > /dev/cma_test
    > will require cma_test to request 2MB(2048KB)
    >
    > Any read request to /dev/cma_test will let the module to free the 1st valid
    > memory from CMA, for example:
    >
    > 1st time
    > $ cat /dev/cma_test
    > will require cma_test to free the 1MB allocated in the first write request
    > 2nd time
    > $ cat /dev/cma_test
    > will require cma_test to free the 2MB allocated in the second write request
    >
    > Signed-off-by: Barry Song <Baohua.Song@csr.com>

    Reviewed-by: Michal Nazarewicz <mina86@mina86.com>

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    .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
    ..o | Computer Science, Michał “mina86” Nazarewicz (o o)
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