linux-kernel - Re: [PATCH] memcg: Always call cond

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: <zxorog2mv54v5dpl5cmmkd3j4hznyxbj435hjtbtzljwspm6mt@tj446cjrclcg>
Date: Tue, 27 May 2025 09:54:10 -0700
From: Shakeel Butt <shakeel.butt@...ux.dev>
To: Breno Leitao <leitao@...ian.org>
Cc: Johannes Weiner <hannes@...xchg.org>, Michal Hocko <mhocko@...nel.org>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Muchun Song <muchun.song@...ux.dev>, 
	Andrew Morton <akpm@...ux-foundation.org>, Chen Ridong <chenridong@...wei.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Michal Hocko <mhocko@...e.com>, cgroups@...r.kernel.org, 
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, kernel-team@...a.com, 
	Michael van der Westhuizen <rmikey@...a.com>, Usama Arif <usamaarif642@...il.com>, 
	Pavel Begunkov <asml.silence@...il.com>, Rik van Riel <riel@...riel.com>
Subject: Re: [PATCH] memcg: Always call cond_resched() after fn()

On Tue, May 27, 2025 at 03:03:34AM -0700, Breno Leitao wrote:
> 
> Not sure I followed you here. __oom_kill_process is doing the following:
> 
>   static void __oom_kill_process(struct task_struct *victim, const char *message)
>   {
> 	...
>         pr_err("%s: Killed process %d (%s) total-vm:%lukB, anon-rss:%lukB, file-rss:%lukB, shmem-rss:%lukB, UID:%u pgtables:%lukB oom_score_adj:%hd\n",
> 
> 
> Would you use a buffer to print to, and them flush it at the same time
> (with pr_err()?)
> 

Something similar to what mem_cgroup_print_oom_meminfo() does with
seq_buf.