Ingo Molnar wrote: > > * Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > > > > What must arch maintainers do to enable it? Have you any particular > > > suggestions, warnings etc to make their lives easier? > > > > The last patch is a good illustration what need to be done. It's very > > straight forward, I don't see any pitfalls. > > Might make sense to stick that somewhere into Documentation/mm/, to make > arch maintainers feel all warm and fuzzy if they look into enabling this > feature on their architecture. I want to rework code around page->ptl a bit more: - allow pgtable_page_ctor() to fail and modify callers to handle it; - if sizeof(spinlock_t) > sizeof(long) allocate the spinlock_t dynamically. It will allow to use split lock with DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC. And it will make -rt guys happier. ;) After that I'll document it. Does it work for you? -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>