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cbcda14b12
sched_ext schedulers have state in BPF programs and kernel. scx_dump provides kernel state and BPF program state on error, but this is static in what it can provide. Add a sched_ext_exit tracepoint in scx_claim_exit() so that BPF programs can dynamically inspect scheduler specific state at the moment of exit. Pass the exiting scx_sched so attached programs can read its state, and, since exits propagate through a hierarchy of sub-schedulers, identify which scheduler each event belongs to. Signed-off-by: Pat Somaru <patso@likewhatevs.io> Signed-off-by: Tejun Heo <tj@kernel.org> |
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