Re: [PATCH v10 06/14] unwind_user/deferred: Add deferred unwinding interface

From: Steven Rostedt
Date: Thu Jun 19 2025 - 04:50:04 EST


On Thu, 19 Jun 2025 10:01:08 +0200
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> If you want to rely on consecutive system calls never seeing the same
> timestamp, let alone PID reuse in the same timestamp -- for some generic
> infrastructure -- you need to go audit all the arch code.

I can drop the timestamp and go back to the original "cookie"
generation that guaranteed unique ids for something like 2^48 system
calls per task.

I thought the timestamps just made it easier. But having to audit every
arch, may make that not the case.

-- Steve