From: Oleg Nesterov <oleg@redhat.com>
To: Oleksandr Natalenko <oleksandr@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-fsdevel@vger.kernel.org, "Jonathan Corbet" <corbet@lwn.net>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Huang Ying" <ying.huang@intel.com>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
"Will Deacon" <will@kernel.org>,
"Guilherme G . Piccoli" <gpiccoli@igalia.com>,
"Laurent Dufour" <ldufour@linux.ibm.com>,
"Stephen Kitt" <steve@sk2.org>, "Rob Herring" <robh@kernel.org>,
"Joel Savitz" <jsavitz@redhat.com>,
"Eric W . Biederman" <ebiederm@xmission.com>,
"Kees Cook" <keescook@chromium.org>,
"Xiaoming Ni" <nixiaoming@huawei.com>,
"Luis Chamberlain" <mcgrof@kernel.org>,
"Renaud Métrich" <rmetrich@redhat.com>,
"Grzegorz Halat" <ghalat@redhat.com>, "Qi Guo" <qguo@redhat.com>
Subject: Re: [PATCH] core_pattern: add CPU specifier
Date: Sat, 3 Sep 2022 09:20:19 +0200 [thread overview]
Message-ID: <20220903072018.GA15331@redhat.com> (raw)
In-Reply-To: <20220903064330.20772-1-oleksandr@redhat.com>
On 09/03, Oleksandr Natalenko wrote:
>
> Statistically, in a large deployment regular segfaults may indicate a CPU issue.
>
> Currently, it is not possible to find out what CPU the segfault happened on.
> There are at least two attempts to improve segfault logging with this regard,
> but they do not help in case the logs rotate.
>
> Hence, lets make sure it is possible to permanently record a CPU
> the task ran on using a new core_pattern specifier.
>
> Suggested-by: Renaud Métrich <rmetrich@redhat.com>
> Signed-off-by: Oleksandr Natalenko <oleksandr@redhat.com>
> ---
> Documentation/admin-guide/sysctl/kernel.rst | 1 +
> fs/coredump.c | 5 +++++
> include/linux/coredump.h | 1 +
> 3 files changed, 7 insertions(+)
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
next prev parent reply other threads:[~2022-09-03 7:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-03 6:43 [PATCH] core_pattern: add CPU specifier Oleksandr Natalenko
2022-09-03 7:20 ` Oleg Nesterov [this message]
2022-09-04 18:27 ` Andrew Morton
2022-09-04 19:38 ` Oleg Nesterov
2022-09-06 22:22 ` Eric W. Biederman
2022-09-07 6:15 ` Oleksandr Natalenko
2022-09-07 17:34 ` Oleg Nesterov
2022-09-07 22:00 ` Eric W. Biederman
2022-09-08 6:11 ` Oleksandr Natalenko
2022-09-07 15:53 ` Luis Chamberlain
2022-09-08 6:45 ` Renaud Métrich
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