[PING^4] 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 <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.