Re: [PATCH 5/5] proc: export more page flags in /proc/kpageflags

[Ingo Molnar]

* Wu Fengguang <fengguang.wu@xxxxxxxxx> wrote:

> > See my other mail i just sent: it would be a natural extension 
> > of tracing to also dump all current object state when tracing is 
> > turned on. That way no drop_caches is needed at all.
> 
> I can understand the merits here - I also did readahead 
> tracing/accounting in _one_ piece of code. Very handy.
> 
> The readahead traces are now raw printks - converting to the 
> ftrace framework would be a big win.
> 
> But. It's still not a fit-all solution. Imagine when full data 
> _since_ booting is required, but the user cannot afford a reboot.

The above 'get object state' interface (which allows passive 
sampling) - integrated into the tracing framework - would serve that 
goal, agreed?

	Ingo
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