Re: [PATCH v7 2/2] Output stall data in debugfs

[Don Zickus]

On Thu, Aug 11, 2011 at 04:35:08PM -0700, Alex Neronskiy wrote:
> Instead of using the log, use debugfs for output of both stall
> lengths and stack traces. Printing to the log can result in
> watchdog touches, distorting the very events being measured.
> Additionally, the information will not distract from lockups
> when users view the log.
> 
> A two-buffer system is used to ensure that the trace information
> can always be recorded without contention.
> 
> Signed-off-by: Alex Neronskiy <zakmagnus@xxxxxxxxxxxx>
> ---
> Changes from last version per Peter's suggestions: different
> locks, refactoring, ACCESS_ONCE.

I think I am going to ignore these patches for now until I see if you can
solve things using Ingo's idea.

Cheers,
Don
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