RFR (XS) 8152957: Improve specificity of safepoint logging to print safepoint typ

[David Holmes]

Hi Coleen,

On 20/12/2017 6:12 AM, coleen.phillimore at oracle.com wrote:
> Summary: upgrade safepoint begin logs to Info logging, which has the 
> reason.

410   log_info(safepoint)("Entering safepoint region: %s", 
VMThread::vm_safepoint_description());
497/504       log_debug(safepoint)("Leaving safepoint region");

You need to change the "leaving" part to info as well.

Though I'm not clear how this simple change relates to the bug synopsis 
and the request to "print safepoint type" ??

Thanks,
David

> See bug for sample.
> 
> Tested with existing jtreg tests to make sure new logging line doesn't 
> break anything.
> 
> open webrev at http://cr.openjdk.java.net/~coleenp/8152957.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8152957
> 
> Thanks,
> Coleen