Memory policy question for NUMA arch....
Rick Sherm <[email protected]>
| Newsgroups | org.kernel.vger.linux-numa |
|---|---|
| Message-ID | <[email protected]> |
CC'ing linux-numa. I emailed it to linux-kernel but forgot to 'CC' linux-numa. Please CC 'linux-kernel' while replying. Hello, On a NUMA host, if a driver calls __get_free_pages() then it will eventually invoke ->alloc_pages_current(..). The comment above/within alloc_pages_current() says 'current->mempolicy' will be used.So what memory policy will kick-in if the driver is trying to allocate some memory blocks during driver load time(say from probe_one)? System-wide default policy,correct? What if the driver wishes to i) stay confined to a 'cpulist' OR ii) use a different mem-policy? How do I achieve this? I will choose the 'cpulist' after I am successfuly able to affinitize the MSI-X vectors. regards Rick