linux-kernel - Re: [PATCH 2/2] docs: admin-guide: Remove threads-max auto-tuning

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Date:   Tue, 5 Nov 2019 07:30:29 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Masanari Iida <standby24x7@...il.com>
Cc:     linux-kernel@...r.kernel.org, ebiederm@...ssion.com,
        akpm@...ux-foundation.org, stable@...r.kernel.org, corbet@....net,
        linux-doc@...r.kernel.org, mingo@...hat.com
Subject: Re: [PATCH 2/2] docs: admin-guide: Remove threads-max auto-tuning

On Fri 01-11-19 13:04:38, Masanari Iida wrote:
> Since following path was merged in 5.4-rc3,
> auto-tuning feature in threads-max was not exist any more.
> Fix the admin-guide document as is.
> 
> kernel/sysctl.c: do not override max_threads provided by userspace
> b0f53dbc4bc4c371f38b14c391095a3bb8a0bb40
> 
> Signed-off-by: Masanari Iida <standby24x7@...il.com>

Acked-by: Michal Hocko <mhocko@...e.com>

> ---
>  Documentation/admin-guide/sysctl/kernel.rst | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
> index 38e0f10d7d9f..9035adbdff58 100644
> --- a/Documentation/admin-guide/sysctl/kernel.rst
> +++ b/Documentation/admin-guide/sysctl/kernel.rst
> @@ -1109,10 +1109,6 @@ constant FUTEX_TID_MASK (0x3fffffff).
>  If a value outside of this range is written to threads-max an error
>  EINVAL occurs.
>  
> -The value written is checked against the available RAM pages. If the
> -thread structures would occupy too much (more than 1/8th) of the
> -available RAM pages threads-max is reduced accordingly.
> -
>  
>  unknown_nmi_panic:
>  ==================
> -- 
> 2.24.0.rc1

-- 
Michal Hocko
SUSE Labs