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[client/host/idd/obs] scheduler: validate phase feedback

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Bump KVMFR to version 28 and attach generation, epoch, and deadline
identities to cadence deliveries and their timing records.

Accept phase corrections only for the exact completed publication. Keep
VM and client clocks independent by exchanging relative phase errors.

Make submission, completion, and work-estimate accounting best effort
so scheduler state cannot delay GPU submission or frame publication.
This commit is contained in:
Geoffrey McRae
2026-08-06 16:05:05 +10:00
parent 983cf588e3
commit 515f4ba06f
16 changed files with 688 additions and 235 deletions
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6
obs/frame_scheduler.h
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@@ -41,11 +41,13 @@ typedef struct LGFrameScheduler
int64_t phaseError;
uint32_t feedbackFrameSerial;
uint32_t feedbackScheduleEpoch;
uint32_t feedbackDeadlineSerial;
unsigned feedbackSamples;
uint32_t readyFrameSerial;
uint32_t readyGeneration;
uint32_t readyScheduleEpoch;
uint32_t readyDeadlineSerial;
uint64_t readyTime;
}
LGFrameScheduler;
@@ -57,10 +59,10 @@ void lgFrameSchedulerSetPeriod(LGFrameScheduler * scheduler,
void lgFrameSchedulerRequestImmediate(LGFrameScheduler * scheduler);
void lgFrameSchedulerObserveFrame(LGFrameScheduler * scheduler,
uint32_t frameSerial, uint32_t generation, uint32_t scheduleEpoch,
uint64_t readyTime);
uint32_t deadlineSerial, uint64_t readyTime);
void lgFrameSchedulerFeedback(LGFrameScheduler * scheduler,
uint32_t frameSerial, uint32_t generation, uint32_t scheduleEpoch,
uint64_t tickTime);
uint32_t deadlineSerial, uint64_t tickTime);
void lgFrameSchedulerUpdate(LGFrameScheduler * scheduler,
PLGMPClientQueue queue, uint64_t now);