lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 06 Oct 2022 20:05:30 -0700 (PDT) From: Palmer Dabbelt <palmer@...belt.com> To: conor.dooley@...rochip.com CC: jszhang@...nel.org, Paul Walmsley <paul.walmsley@...ive.com>, aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] riscv: enable THP_SWAP for RV64 On Wed, 05 Oct 2022 23:53:03 PDT (-0700), conor.dooley@...rochip.com wrote: > On Wed, Oct 05, 2022 at 07:35:53PM -0700, Palmer Dabbelt wrote: >> On Sun, 21 Aug 2022 10:05:59 PDT (-0700), jszhang@...nel.org wrote: >> > I have a Sipeed Lichee RV dock board which only has 512MB DDR, so >> > memory optimizations such as swap on zram are helpful. As is seen >> > in commit d0637c505f8a ("arm64: enable THP_SWAP for arm64") and >> > commit bd4c82c22c367e ("mm, THP, swap: delay splitting THP after >> > swapped out"), THP_SWAP can improve the swap throughput significantly. >> > >> > Enable THP_SWAP for RV64, testing the micro-benchmark which is >> > introduced by commit d0637c505f8a ("arm64: enable THP_SWAP for arm64") >> > shows below numbers on the Lichee RV dock board: >> > >> > thp swp throughput w/o patch: 66908 bytes/ms (mean of 10 tests) >> > thp swp throughput w/ patch: 322638 bytes/ms (mean of 10 tests) >> > >> > Improved by 382%! >> > >> > Signed-off-by: Jisheng Zhang <jszhang@...nel.org> >> > --- >> > arch/riscv/Kconfig | 1 + >> > 1 file changed, 1 insertion(+) >> > >> > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig >> > index ed66c31e4655..19088c750c7f 100644 >> > --- a/arch/riscv/Kconfig >> > +++ b/arch/riscv/Kconfig >> > @@ -45,6 +45,7 @@ config RISCV >> > select ARCH_WANT_FRAME_POINTERS >> > select ARCH_WANT_GENERAL_HUGETLB >> > select ARCH_WANT_HUGE_PMD_SHARE if 64BIT >> > + select ARCH_WANTS_THP_SWAP if TRANSPARENT_HUGEPAGE >> > select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU >> > select BUILDTIME_TABLE_SORT if MMU >> > select CLONE_BACKWARDS >> >> Thanks, this is on for-next. > > FYI, this is v1 of a patchset that went to v3. > v3 only changed the commit message, but v2 had a functional change. > > v3 is here: > https://lore.kernel.org/all/20220829145742.3139-1-jszhang@kernel.org/ Thanks, not sure why I missed those. I've put the v3 on for-next.
Powered by blists - more mailing lists