PING: Linux: Support transparent hugepages

[Igor Veresov]

I think this looks ok.
So, older kernels wouldn't return an error if you use MAP_HUGETLB?

I filed: 7034464 Support transparent large pages on Linux

igor

On 4/6/11 8:21 AM, Andrew Haley wrote:
> On 04/04/2011 05:43 PM, Igor Veresov wrote:
>
>> I didn't mean the work I mentioned in the last paragraph that you quoted
>> exists, I rather meant that it should be done in order to implement
>> proper transparent pages support in linux (because we want the older
>> linux kernels work too).
>>
>> I think it should be analogous to the Solaris implementation, which can
>> be found here:
>> http://hg.openjdk.java.net/jdk7/hotspot/hotspot/file/2dbcb4a4d8da/src/os/solaris/vm/os_solaris.cpp
>
> Here is the full patch, with backwards compatibility.  It builds on
> old and new systems, preferring MAP_HUGETLB but falling back to the
> old SysV shmget() if that doesn't work.
>
> If this looks right to you, I'll prepare a CR for pushing.  I'll need
> a bug ID, please.
>
> Thanks,
> Andrew.
>
>