Martin Drab wrote:
Hi,
I'm writing a driver for a sampling device that is constantly delivering a
relatively high amount of data (about 16 MB/s) and I need to deliver the
data to the user-space ASAP. To prevent data loss I create a queue of
buffers (consisting of few pages each) which are more or less directly
filled by the device and then mapped to the user-space via mmap().
The thing is that I'd like to prevent kernel to swap these pages out,
because then I may loose some data when they are not available in time
for the next round.
It would likely be easier to just mlock this buffer from the userspace
application, rather than trying to achieve this in the driver..
--
Robert Hancock Saskatoon, SK, Canada
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