| From | "Eric W. Biederman" <> | Date | Fri, 22 Apr 2022 14:15:35 -0500 | Subject | Re: [PATCH v2 0/5] ptrace-vs-PREEMPT_RT and freezer rewrite |
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Sebastian Andrzej Siewior <bigeasy@linutronix.de> writes:
> On 2022-04-21 17:02:48 [+0200], Peter Zijlstra wrote: >> Find here a new posting of the ptrace and freezer patches :-) >> >> The majority of the changes are in patch 2, which with much feedback from Oleg >> and Eric has changed lots. >> >> I'm hoping we're converging on something agreeable. > > I tested this under RT (had to remove the preempt-disable section in > ptrace_stop()) with ssdd [0]. It forks a few tasks and then > PTRACE_SINGLESTEPs them for a few iterations.
Out of curiosity why did you need to remove the preempt_disable section on PREEMPT_RT? It should have lasted for just a moment until schedule was called.
Eric
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