Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> writes: > This ioctl will allow us to purge inactive userspace buffers when the > system is running out of contiguous memory. > > For now, the purge logic is rather dumb in that it does not try to > release only the amount of BO needed to meet the last CMA alloc request > but instead purges all objects placed in the purgeable pool as soon as > we experience a CMA allocation failure. > > Note that the in-kernel BO cache is always purged before the purgeable > cache because those objects are known to be unused while objects marked > as purgeable by a userspace application/library might have to be > restored when they are marked back as unpurgeable, which can be > expensive. > > Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> I got an ack from Dave on the ioctl struct, so I think we're good to go. Reviewed and pushed. Thanks!
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