[PATCH v2 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods
peterz at infradead.org
Thu Mar 17 16:09:28 PDT 2016
On Thu, Mar 17, 2016 at 03:55:57PM -0700, Paul E. McKenney wrote:
> That said, RCU used to use NMI-based stack traces, but switched to the
> current scheme due to the NMIs having the unfortunate habit of locking
> things up, which IIRC often meant no stack traces at all. If I recall
> correctly, one of the problems was self-deadlock in printk().
> Have these problems been fixed?
Improved is I think the word.
Although I've butchered my printk() into absolute submission :-)
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