Re: [PATCH] watchdog: remove HARDLOCKUP_DETECTOR_PERF
From: Peter Zijlstra <peterz@infradead.org>
Date: 2025-09-15 10:35:48
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On Mon, Sep 15, 2025 at 11:26:09AM +0100, Will Deacon wrote:
| If all CPUs are hard locked up at the same time the buddy system | can't detect it. Ok, so why is that limitation acceptable? It looks to me like you're removing useful functionality.
Yeah, this. I've run into this case waaay too many times to think it reasonable to remove the perf/NMI based lockup detector.