[PING^3] Re: [PATCH 1/2] Add a pass to automatically add ptwrite instrumentation

[Andi Kleen]

Andi Kleen <ak@linux.intel.com> writes:

Ping!

> Andi Kleen <ak@linux.intel.com> writes:
>
> Ping!
>
>> Andi Kleen <andi@firstfloor.org> writes:
>>
>> Ping!
>>
>>> From: Andi Kleen <ak@linux.intel.com>
>>>
>>> [v4: Rebased on current tree. Avoid some redundant log statements
>>> for locals and a few other fixes.  Fix some comments. Improve
>>> documentation. Did some studies on the debug information quality,
>>> see below]
>>>
>>> Add a new pass to automatically instrument changes to variables
>>> with the new PTWRITE instruction on x86. PTWRITE writes a 4 or 8 byte
>>> field into an Processor Trace log, which allows low over head
>>> logging of information. Essentially it's a hardware accelerated
>>> printf.