linux-kernel - Re: [PATCH RFC] mm: count zeromap read and set for swapout and swapin

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <70f4f5b1-cee6-49a2-b375-3ef43bf19a0c@redhat.com>
Date: Mon, 28 Oct 2024 18:17:17 +0100
From: David Hildenbrand <david@...hat.com>
To: Nhat Pham <nphamcs@...il.com>, Barry Song <21cnbao@...il.com>
Cc: akpm@...ux-foundation.org, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org, Barry Song <v-songbaohua@...o.com>,
 Usama Arif <usamaarif642@...il.com>,
 Chengming Zhou <chengming.zhou@...ux.dev>,
 Yosry Ahmed <yosryahmed@...gle.com>, Johannes Weiner <hannes@...xchg.org>,
 Hugh Dickins <hughd@...gle.com>, Matthew Wilcox <willy@...radead.org>,
 Shakeel Butt <shakeel.butt@...ux.dev>, Andi Kleen <ak@...ux.intel.com>,
 Baolin Wang <baolin.wang@...ux.alibaba.com>, Chris Li <chrisl@...nel.org>,
 "Huang, Ying" <ying.huang@...el.com>, Kairui Song <kasong@...cent.com>,
 Ryan Roberts <ryan.roberts@....com>
Subject: Re: [PATCH RFC] mm: count zeromap read and set for swapout and swapin

On 28.10.24 17:34, Nhat Pham wrote:
> On Sun, Oct 27, 2024 at 7:32 PM Barry Song <21cnbao@...il.com> wrote:
>>
>>
>> agree it is better to have a separate counter for zeromap.
>> then it raises a question: what is the proper name for it :-)
>>
>> zeromap_swpin, zeromap_swpout seems too long? and zswpin
>> and zswpout have been used by zswap
> 
> Hmmmmm. How about zeroswpin? zeroswpout?

Is this kind of a "swpin_skip" / "swpout_skip" ? Because we optimized it 
out?

-- 
Cheers,

David / dhildenb