feat(starry): perf call-graph capture (PERF_SAMPLE_CALLCHAIN) - #1

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JosephJoshua wants to merge 6 commits into

feat/perf-multicore-biglittlefrom

feat/perf-callchain

Commits on Jul 11, 2026

feat(axcpu): expose interrupted trap-frame FP/SP for PMU sampling
JosephJoshua
committed
feat(axbacktrace): alloc-free reader-injected walk_fp + IRQ-safe range getters
JosephJoshua
committed
feat(perf): capture kernel callchain in PMU overflow handler
JosephJoshua
committed
feat(axbacktrace): harden walk_fp — total-step cap + full frame-record bound
JosephJoshua
committed
feat(perf): IRQ-safe no-fault reader + user call-graph unwinding
JosephJoshua
committed
test(starry): perf kernel + user call-graph selftests
JosephJoshua
committed