linux-kernel - Re: [PATCH v3 3/3] mm: call cond_resched() from deferred_init

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: <20200403134439.li6i635dnur5jdha@ca-dmjordan1.us.oracle.com>
Date:   Fri, 3 Apr 2020 09:44:39 -0400
From:   Daniel Jordan <daniel.m.jordan@...cle.com>
To:     Pavel Tatashin <pasha.tatashin@...een.com>
Cc:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        mhocko@...e.com, linux-mm@...ck.org, dan.j.williams@...el.com,
        shile.zhang@...ux.alibaba.com, daniel.m.jordan@...cle.com,
        ktkhai@...tuozzo.com, david@...hat.com, jmorris@...ei.org,
        sashal@...nel.org, vbabka@...e.cz
Subject: Re: [PATCH v3 3/3] mm: call cond_resched() from
 deferred_init_memmap()

On Fri, Apr 03, 2020 at 09:35:49AM -0400, Pavel Tatashin wrote:
> Now that deferred pages are initialized with interrupts enabled we can
> replace touch_nmi_watchdog() with cond_resched(), as it was before
> 3a2d7fa8a3d5.
...
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 4a60f2427eb0..445f74358997 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -1816,7 +1816,7 @@ static int __init deferred_init_memmap(void *data)
>  	 */
>  	while (spfn < epfn) {
>  		nr_pages += deferred_init_maxorder(&i, zone, &spfn, &epfn);
> -		touch_nmi_watchdog();
> +		sched_clock();

I think you meant cond_resched()?

With that,
Reviewed-by: Daniel Jordan <daniel.m.jordan@...cle.com>