Re: [RFC,PATCH] Use RCU to protect tasklist for unicast signals

[Ingo Molnar]

* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> Doesn't this fix the longest latency we were seeing with 
> PREEMPT_DESKTOP, I don't have a trace handy but the upshot was "signal 
> delivery must remain atomic on !PREEMPT_RT"?

yes - although Paul's patch converts only a portion of the signal code 
to RCU-read-lock, so i'd expect there to be other latencies too. Might 
be worth a test (once we've sorted out the HRT build bugs).

	Ingo
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