On Fri, 20 Jul 2012 15:50:16 +0300 "Kirill A. Shutemov" <[email protected]> wrote:
> Clearing a 2MB huge page will typically blow away several levels of CPU > caches. To avoid this only cache clear the 4K area around the fault > address and use a cache avoiding clears for the rest of the 2MB area. > > It would be nice to test the patchset with more workloads. Especially if > you see performance regression with THP. > > Any feedback is appreciated. This all looks pretty sane to me. Some detail-poking from the x86 guys would be nice. What do other architectures need to do? Simply implement clear_page_nocache()? I believe that powerpc is one, not sure about others. Please update the changelogs to let arch maintainers know what they should do and cc those people on future versions? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
