Hi Michal,
I decided not to merge these two patches, because in addition to sparc
optimization move, we have this dependancies:
mm: zero reserved and unavailable struct pages
must be before
mm: stop zeroing memory during allocation in vmemmap.
Otherwise, we can end-up with struct pages that are not zeroed properly.
However, the first patch depends on
mm: zero struct pages during initialization
As it uses mm_zero_struct_page().
Pasha
On 10/03/2017 11:34 AM, Pasha Tatashin wrote:
On 10/03/2017 09:19 AM, Michal Hocko wrote:
On Wed 20-09-17 16:17:14, Pavel Tatashin wrote:
vmemmap_alloc_block() will no longer zero the block, so zero memory
at its call sites for everything except struct pages. Struct page
memory
is zero'd by struct page initialization.
Replace allocators in sprase-vmemmap to use the non-zeroing version. So,
we will get the performance improvement by zeroing the memory in
parallel
when struct pages are zeroed.
Is it possible to merge this patch with
http://lkml.kernel.org/r/20170920201714.19817-7-pasha.tatashin@xxxxxxxxxx
Yes, I will do that. It would also require re-arranging
[PATCH v9 07/12] sparc64: optimized struct page zeroing
optimization to come after this patch.
Pasha
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