linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Yu Zhao" <yuzhao@google.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Andi Kleen" <ak@linux.intel.com>,
	"Aneesh Kumar" <aneesh.kumar@linux.ibm.com>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Hillf Danton" <hdanton@sina.com>, "Jens Axboe" <axboe@kernel.dk>,
	"Johannes Weiner" <hannes@cmpxchg.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Matthew Wilcox" <willy@infradead.org>,
	"Mel Gorman" <mgorman@suse.de>,
	"Michael Larabel" <Michael@michaellarabel.com>,
	"Michal Hocko" <mhocko@kernel.org>,
	"Mike Rapoport" <rppt@kernel.org>, "Tejun Heo" <tj@kernel.org>,
	"Vlastimil Babka" <vbabka@suse.cz>,
	"Will Deacon" <will@kernel.org>,
	linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
	page-reclaim@google.com, "Brian Geffon" <bgeffon@google.com>,
	"Jan Alexander Steffens" <heftig@archlinux.org>,
	"Oleksandr Natalenko" <oleksandr@natalenko.name>,
	"Steven Barrett" <steven@liquorix.net>,
	"Suleiman Souhlal" <suleiman@google.com>,
	"Daniel Byrne" <djbyrne@mtu.edu>,
	"Donald Carr" <d@chaos-reins.com>,
	"Holger Hoffstätte" <holger@applied-asynchrony.com>,
	"Konstantin Kharlamov" <Hi-Angel@yandex.ru>,
	"Shuang Zhai" <szhai2@cs.rochester.edu>,
	"Sofia Trinh" <sofia.trinh@edi.works>,
	"Vaibhav Jain" <vaibhav@linux.ibm.com>
Subject: Re: [PATCH v14 08/14] mm: multi-gen LRU: support page table walks
Date: Thu, 20 Oct 2022 10:35:28 -0700	[thread overview]
Message-ID: <CAHk-=whQchubuDpRGFabhmcZuzdt13OOF8wznXb+Dbi3GzBQhQ@mail.gmail.com> (raw)
In-Reply-To: <Y1FXpHdyvXjrjbLw@hirez.programming.kicks-ass.net>

On Thu, Oct 20, 2022 at 7:14 AM Peter Zijlstra <peterz@infradead.org> wrote:
>
> So I've been sitting on these here patches (and never having time to
> repost them), which is how I noticed in the first place:
>
>   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=x86/mm.pae

Well, that seems an improvement. I don't love how GUP_GET_PTE_LOW_HIGH
now affects the PMD too, but if it's ok for all the three users, I
guess it's ok. Maybe rename it now that it's not just the PTE?

That said, I reacted to that cmpxchg loop:

        } while (cmpxchg64(&pmdp->pmd, old.pmd, 0ULL) != old.pmd);

is this series just so old (but rebased) that it doesn't use "try_cmpxchg64()"?


               Linus

  parent reply	other threads:[~2022-10-20 17:36 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-15  7:13 [PATCH v14 00/14] Multi-Gen LRU Framework Yu Zhao
2022-08-15  7:13 ` [PATCH v14 01/14] mm: x86, arm64: add arch_has_hw_pte_young() Yu Zhao
2022-08-15  7:13 ` [PATCH v14 02/14] mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG Yu Zhao
2022-08-15  7:13 ` [PATCH v14 03/14] mm/vmscan.c: refactor shrink_node() Yu Zhao
2022-08-15  7:13 ` [PATCH v14 04/14] Revert "include/linux/mm_inline.h: fold __update_lru_size() into its sole caller" Yu Zhao
2022-08-15  7:13 ` [PATCH v14 05/14] mm: multi-gen LRU: groundwork Yu Zhao
2022-08-15  7:13 ` [PATCH v14 06/14] mm: multi-gen LRU: minimal implementation Yu Zhao
2022-08-15  7:13 ` [PATCH v14 07/14] mm: multi-gen LRU: exploit locality in rmap Yu Zhao
2022-09-01  9:18   ` Nadav Amit
2022-09-02  1:17     ` Yu Zhao
2022-09-02  1:28       ` Yu Zhao
2022-08-15  7:13 ` [PATCH v14 08/14] mm: multi-gen LRU: support page table walks Yu Zhao
2022-10-13 15:04   ` Peter Zijlstra
2022-10-19  5:51     ` Yu Zhao
2022-10-19 17:40       ` Linus Torvalds
2022-10-20 14:13         ` Peter Zijlstra
2022-10-20 17:29           ` Yu Zhao
2022-10-20 17:35           ` Linus Torvalds [this message]
2022-10-20 18:55             ` Peter Zijlstra
2022-10-21  2:10               ` Linus Torvalds
2022-10-21  3:38                 ` Matthew Wilcox
2022-10-21 16:50                   ` Linus Torvalds
2022-10-23 14:44                     ` David Gow
2022-10-23 17:55                     ` Maciej W. Rozycki
2022-10-23 18:35                       ` Linus Torvalds
2022-10-24  7:30                         ` Arnd Bergmann
2022-10-25 16:28                         ` Maciej W. Rozycki
2022-10-26 15:43                           ` Arnd Bergmann
2022-10-27 23:08                             ` Maciej W. Rozycki
2022-10-28  7:27                               ` Arnd Bergmann
2022-10-21 10:12                 ` Peter Zijlstra
2022-10-24 18:20                 ` Gareth Poole
2022-10-24 19:28                 ` Serentty
2022-08-15  7:13 ` [PATCH v14 09/14] mm: multi-gen LRU: optimize multiple memcgs Yu Zhao
2022-08-15  7:13 ` [PATCH v14 10/14] mm: multi-gen LRU: kill switch Yu Zhao
2022-08-15  7:13 ` [PATCH v14 11/14] mm: multi-gen LRU: thrashing prevention Yu Zhao
2022-08-15  7:13 ` [PATCH v14 12/14] mm: multi-gen LRU: debugfs interface Yu Zhao
2022-08-15  7:13 ` [PATCH v14 13/14] mm: multi-gen LRU: admin guide Yu Zhao
2022-08-15  9:06   ` Bagas Sanjaya
2022-08-15  9:12   ` Mike Rapoport
2022-08-17 22:46     ` Yu Zhao
2022-09-20  7:43   ` Bagas Sanjaya
2022-08-15  7:13 ` [PATCH v14 14/14] mm: multi-gen LRU: design doc Yu Zhao
2022-08-15  9:07   ` Bagas Sanjaya
2022-08-31  4:17 ` OpenWrt / MIPS benchmark with MGLRU Yu Zhao
2022-08-31 12:12   ` Arnd Bergmann
2022-08-31 15:13   ` Dave Hansen
2022-08-31 22:18   ` Yu Zhao
2022-09-12  0:08 ` [PATCH v14 00/14] Multi-Gen LRU Framework Andrew Morton
2022-09-15 17:56   ` Yu Zhao
2022-09-18 20:40     ` Yu Zhao
2022-09-18 23:47       ` Andrew Morton

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAHk-=whQchubuDpRGFabhmcZuzdt13OOF8wznXb+Dbi3GzBQhQ@mail.gmail.com' \
    --to=torvalds@linux-foundation.org \
    --cc=Hi-Angel@yandex.ru \
    --cc=Michael@michaellarabel.com \
    --cc=ak@linux.intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=aneesh.kumar@linux.ibm.com \
    --cc=axboe@kernel.dk \
    --cc=bgeffon@google.com \
    --cc=catalin.marinas@arm.com \
    --cc=corbet@lwn.net \
    --cc=d@chaos-reins.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=djbyrne@mtu.edu \
    --cc=hannes@cmpxchg.org \
    --cc=hdanton@sina.com \
    --cc=heftig@archlinux.org \
    --cc=holger@applied-asynchrony.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=mgorman@suse.de \
    --cc=mhocko@kernel.org \
    --cc=oleksandr@natalenko.name \
    --cc=page-reclaim@google.com \
    --cc=peterz@infradead.org \
    --cc=rppt@kernel.org \
    --cc=sofia.trinh@edi.works \
    --cc=steven@liquorix.net \
    --cc=suleiman@google.com \
    --cc=szhai2@cs.rochester.edu \
    --cc=tj@kernel.org \
    --cc=vaibhav@linux.ibm.com \
    --cc=vbabka@suse.cz \
    --cc=will@kernel.org \
    --cc=willy@infradead.org \
    --cc=x86@kernel.org \
    --cc=yuzhao@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).