[PATCH v9 00/12] complete deferred page initialization · Pavel Tatashin <hidden> · 2017-09-20
[PATCH v9 04/12] sparc64: simplify vmemmap_populate · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 04/12] sparc64: simplify vmemmap_populate · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 04/12] sparc64: simplify vmemmap_populate · Pasha Tatashin <hidden> · 2017-10-03
[PATCH v9 01/12] x86/mm: setting fields in deferred pages · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 01/12] x86/mm: setting fields in deferred pages · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 01/12] x86/mm: setting fields in deferred pages · Pasha Tatashin <hidden> · 2017-10-03
[PATCH v9 05/12] mm: defining memblock_virt_alloc_try_nid_raw · Pavel Tatashin <hidden> · 2017-09-20
[PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap · Michal Hocko <mhocko@kernel.org> · 2017-10-04
[PATCH v9 11/12] arm64/kasan: use kasan_map_populate() · Pavel Tatashin <hidden> · 2017-09-20
[PATCH v9 06/12] mm: zero struct pages during initialization · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 06/12] mm: zero struct pages during initialization · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 06/12] mm: zero struct pages during initialization · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 06/12] mm: zero struct pages during initialization · Michal Hocko <mhocko@kernel.org> · 2017-10-04
Re: [PATCH v9 06/12] mm: zero struct pages during initialization · Pasha Tatashin <hidden> · 2017-10-04
[PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Michal Hocko <mhocko@kernel.org> · 2017-10-04
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Pasha Tatashin <hidden> · 2017-10-04
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Michal Hocko <mhocko@kernel.org> · 2017-10-04
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Pasha Tatashin <hidden> · 2017-10-04
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Michal Hocko <mhocko@kernel.org> · 2017-10-04
Re: [PATCH v9 08/12] mm: zero reserved and unavailable struct pages · Pasha Tatashin <hidden> · 2017-10-04
[PATCH v9 03/12] mm: deferred_init_memmap improvements · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 03/12] mm: deferred_init_memmap improvements · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 03/12] mm: deferred_init_memmap improvements · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 03/12] mm: deferred_init_memmap improvements · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 03/12] mm: deferred_init_memmap improvements · Michal Hocko <mhocko@kernel.org> · 2017-10-04
[PATCH v9 10/12] x86/kasan: use kasan_map_populate() · Pavel Tatashin <hidden> · 2017-09-20
[PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Mark Rutland <mark.rutland@arm.com> · 2017-10-03
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pasha Tatashin <hidden> · 2017-10-03
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Will Deacon <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Michal Hocko <mhocko@kernel.org> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Will Deacon <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Will Deacon <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Will Deacon <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Will Deacon <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-10-09
Re: [PATCH v9 09/12] mm/kasan: kasan specific map populate function · Pavel Tatashin <hidden> · 2017-10-09
[PATCH v9 07/12] sparc64: optimized struct page zeroing · Pavel Tatashin <hidden> · 2017-09-20
[PATCH v9 02/12] sparc64/mm: setting fields in deferred pages · Pavel Tatashin <hidden> · 2017-09-20
Re: [PATCH v9 02/12] sparc64/mm: setting fields in deferred pages · Michal Hocko <mhocko@kernel.org> · 2017-10-03
Re: [PATCH v9 02/12] sparc64/mm: setting fields in deferred pages · Pasha Tatashin <hidden> · 2017-10-03

Re: [PATCH v9 12/12] mm: stop zeroing memory during allocation in vmemmap

From: Pasha Tatashin <hidden>
Date: 2017-10-03 15:35:39
Also in: linux-arm-kernel, linux-mm, lkml, sparclinux

On 10/03/2017 09:19 AM, Michal Hocko wrote:

On Wed 20-09-17 16:17:14, Pavel Tatashin wrote:

quoted

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@oracle.com

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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