Re: spinlocks on powerpc
| От | Robert Haas |
|---|---|
| Тема | Re: spinlocks on powerpc |
| Дата | |
| Msg-id | CA+TgmoYAw+VN_XKGFO6qCJg-5TxK5u0nrtsGDr=kzB3DO1Co_w@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: spinlocks on powerpc (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-hackers |
On Tue, Jan 3, 2012 at 4:17 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: >> For Itanium, I was able to find some fairly official-looking >> documentation that said "this is how you should do it". It would be >> nice to find something similar for PPC64, instead of testing every >> machine and reinventing the wheel ourselves. > > You are aware that our spinlock code is pretty much verbatim from the > PPC ISA spec, no? The issue here is that the "official documentation" > has been a moving target over the decades the ISA has been in existence. I wasn't aware of that, but I think my basic point still stands: it's gonna be painful if we have to test large numbers of different PPC boxes to figure all this out... -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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