membarrier: core serialization for reclaim of JIT code memory

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60 Minute BoF session
Scheduled: Thursday, September 14, 2017 from 7:30 – 8:30pm in Platinum B

One Line Summary

We need input from architecture maintainers about the best way to proceed to guarantee core serialization instructions within the membarrier system call (and possibly within the scheduler).


(Issue resolved in Hallway track due to unscheduled resolution of problem)

This is an attempt to gather scheduler maintainers, and architecture maintainers, in the same room to get feedback on core serialization guarantees from each architecture when the scheduler is executed, and the requirements each architecture has with respect to core serialization in situations of reclaim of JIT code.


scheduler, membarrier, core serialization, architecture, JIT


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    Mathieu Desnoyers main contributions are in the area of tracing (monitoring/performance analysis/debugging) and scalability, both at the kernel and user-space levels. He maintains the LTTng project, the Userspace RCU library, as well as the Linux kernel membarrier system call. He works in close collaboration with the telecommunication industry, many Linux distributions, and with customers developing hardware scaling from small embedded devices to
    large-deployment servers. He is CEO and Senior Software Architect at EfficiOS.