linux-stable/Documentation/admin-guide/sysctl
Oleksandr Natalenko 8603b6f586 core_pattern: add CPU specifier
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.

Link: https://lkml.kernel.org/r/20220903064330.20772-1-oleksandr@redhat.com
Signed-off-by: Oleksandr Natalenko <oleksandr@redhat.com>
Suggested-by: Renaud Métrich <rmetrich@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Grzegorz Halat <ghalat@redhat.com>
Cc: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Joel Savitz <jsavitz@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Laurent Dufour <ldufour@linux.ibm.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Stephen Kitt <steve@sk2.org>
Cc: Will Deacon <will@kernel.org>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-11-18 13:55:06 -08:00
..
abi.rst docs: admin-guide: sysctl: avoid using ReST :doc:foo markup 2021-06-17 13:24:36 -06:00
fs.rst Update Documentation/admin-guide/sysctl/fs.rst 2021-01-28 15:45:10 -07:00
index.rst
kernel.rst core_pattern: add CPU specifier 2022-11-18 13:55:06 -08:00
net.rst bpf: Use bpf_capable() instead of CAP_SYS_ADMIN for blinding decision 2022-09-16 22:11:57 +02:00
sunrpc.rst
user.rst time/namespace: Add max_time_namespaces ucount 2020-04-07 12:37:21 +02:00
vm.rst userfaultfd: update documentation to describe /dev/userfaultfd 2022-09-11 20:25:49 -07:00