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Douglas Teles afd7ce30ee Restore DEBUG_FS=y for development/bench phase
DEBUG_FS provides instrumentation needed by TODO items 1 and 6:
- /sys/kernel/debug/dri/*/name — GPU performance counters
- /sys/kernel/debug/cma/* — per-region CMA page accounting
- /sys/kernel/debug/block/* — I/O scheduler stats (BLK_DEBUG_FS)
- Detailed thermal zone introspection

Trade-off acknowledged: small runtime overhead from debugfs mount,
but the instrumentation granularity is essential while we're actively
benchmarking and tuning. Switch to DEBUG_FS=n or DISALLOW_MOUNT
for release-final builds once FASE 1-2 benchmarks are complete.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-18 15:33:55 -03:00
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