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[$] A proxy-execution baby step

Tuesday July 29, 2025. 04:13 PM , from LWN.net
Priority inversion comes about when a low-priority task holds a resource
that is also needed by a high-priority task, preventing the latter from
running. This problem is made much worse if the low-priority task is
unable to gain access to the CPU and, as a result, cannot complete its work
and free the resources it holds. Proxy execution is a potential solution
to this problem, but it is a complex solution that has been under
development for several years; LWN first looked
at it in 2020. The 6.17 kernel is likely to contain an important step
forward for this long-running project.
https://lwn.net/Articles/1030842/

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