Messages in this thread | | | Subject | Re: [PATCH v4] mm: cma: add a simple kernel module as the helper to test CMA | Date | Wed, 07 Mar 2012 13:11:13 +0100 | From | "Michal Nazarewicz" <> |
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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>
-- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +----<email/xmpp: mpn@google.com>--------------ooO--(_)--Ooo-- -- 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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