We introduce an interrupt hook in Android to manage memory compression
using madvise, improving user experience.
Currently, when a user returns to the home screen, memory compression is
triggered using madvise. The vma and PAGEOUT flag are sent to
process_madvise, initiating page reclaim.
However, if an app is re-opened soon after starting compression, the
reclaim process can cause read delays, leading to potential lag.
To resolve this, we propose to skip pte range traversal. By comparing
the vma's task uid with the current app's uid, we can identify and
interrupt the madvise operation for that vma.
Implementing this requires a vendor hook for should_end_madvise. This
allows us to skip traversal, enhancing user experience.
Bug: 307846869
Change-Id: If2bdbc200b7305e92f836353b7356aa115e00705
Signed-off-by: zihan ju <zihan.ju@transsion.com>
zihan ju
91d2427218