Messages in this thread | | | Date | Wed, 19 Oct 2016 10:10:32 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [RFC][PATCHv3 3/6] printk: introduce per-cpu safe_print seq buffer |
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On (10/18/16 12:46), Steven Rostedt wrote: > > + > > +/* > > + * Returns with local IRQs disabled. > > + * Can be preempted by NMI. > > It does? How does it return with IRQs disabled? > > > + */ > > +void __printk_safe_enter(void) > > +{ > > + this_cpu_inc(printk_safe_context); > > +} > > + > > +/* > > + * Restores local IRQs state saved in printk_safe_enter(). > > + * Can be preempted by NMI. > > + */ > > How does this return with irqs enabled?
ah... leftovers. thanks, will correct.
-ss
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