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Message-ID: <1589619315-65827-1-git-send-email-nixiaoming@huawei.com>
Date: Sat, 16 May 2020 16:55:11 +0800
From: Xiaoming Ni <nixiaoming@...wei.com>
To: <mcgrof@...nel.org>, <keescook@...omium.org>, <yzaikin@...gle.com>,
<adobriyan@...il.com>, <peterz@...radead.org>, <mingo@...nel.org>,
<patrick.bellasi@....com>, <gregkh@...uxfoundation.org>,
<tglx@...utronix.de>, <Jisheng.Zhang@...aptics.com>,
<bigeasy@...utronix.de>, <pmladek@...e.com>,
<ebiederm@...ssion.com>
CC: <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
<nixiaoming@...wei.com>, <wangle6@...wei.com>
Subject: [PATCH v2 0/4] cleaning up the sysctls table (hung_task watchdog)
Kernel/sysctl.c contains more than 190 interface files, and there are a
large number of config macro controls. When modifying the sysctl
interface directly in kernel/sysctl.c, conflicts are very easy to occur.
E.g: https://lkml.org/lkml/2020/5/10/413.
Use register_sysctl() to register the sysctl interface to avoid
merge conflicts when different features modify sysctl.c at the same time.
So consider cleaning up the sysctls table, details are in:
https://kernelnewbies.org/KernelProjects/proc
https://lkml.org/lkml/2020/5/13/990
The current patch set extracts register_sysctl_init and some sysctl_vals
variables, and clears the interface of hung_task and watchdog in sysctl.c.
changes in v2:
1. Adjusted the order of patches, first do public function
extraction, then do feature code movement
2. Move hung_task sysctl to hung_task.c instead of adding new file
3. Extract multiple common variables instead of only neg_one, and keep
the order of member values in sysctl_vals
4. Add const modification to the variable sixty in watchdog sysctl
V1: https://lkml.org/lkml/2020/5/15/17
Xiaoming Ni (4):
sysctl: Add register_sysctl_init() interface
sysctl: Move some boundary constants form sysctl.c to sysctl_vals
hung_task: Move hung_task sysctl interface to hung_task.c
watchdog: move watchdog sysctl interface to watchdog.c
fs/proc/proc_sysctl.c | 2 +-
include/linux/sched/sysctl.h | 8 +-
include/linux/sysctl.h | 13 ++-
kernel/hung_task.c | 63 +++++++++++++-
kernel/sysctl.c | 202 ++++++++-----------------------------------
kernel/watchdog.c | 101 ++++++++++++++++++++++
6 files changed, 210 insertions(+), 179 deletions(-)
--
1.8.5.6
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