linux-kernel - [PATCH v3 0/2] printk: console: Per-console loglevels

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Date:   Wed, 20 Jul 2022 18:48:06 +0100
From:   Chris Down <chris@...isdown.name>
To:     linux-kernel@...r.kernel.org
Cc:     Petr Mladek <pmladek@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>, kernel-team@...com
Subject: [PATCH v3 0/2] printk: console: Per-console loglevels

v3:

- Update to work with John's kthread patches
- Remove force_console_loglevel, now we only have global and local levels
- Remove minimum_console_loglevel control and document how to change it
- The minimum loglevel is now only honoured on setting global/local level
- Add ignore_per_console_loglevel
- Return -EINVAL if trying to set below minimum console level
- Add parser for named console= options
- Fix docs around ignore_loglevel: it can be changed at runtime
- Fix ordering in "in order of authority" docs
- Remove duplicated default_console_loglevel doc
- Only warn once on syslog() use

v2:

- Dynamically allocate struct device*
- Document sysfs attributes in Documentation/ABI/
- Use sysfs_emit() instead of sprintf() in dev sysfs files
- Remove WARN_ON() for device_add/IS_ERR(console_class)
- Remove "soon" comment for kernel.printk
- Fix !CONFIG_PRINTK build
- Fix device_unregister() NULL dereference if called before class setup
- Add new documentation to MAINTAINERS

Chris Down (2):
  printk: console: Create console= parser that supports named options
  printk: console: Support console-specific loglevels

 Documentation/ABI/testing/sysfs-class-console |  43 +++
 .../admin-guide/kernel-parameters.txt         |  28 +-
 .../admin-guide/per-console-loglevel.rst      |  92 ++++++
 Documentation/admin-guide/serial-console.rst  |  17 +-
 Documentation/core-api/printk-basics.rst      |  35 +-
 Documentation/networking/netconsole.rst       |  17 +
 MAINTAINERS                                   |   3 +
 include/linux/console.h                       |  24 ++
 kernel/printk/console_cmdline.h               |   2 +
 kernel/printk/printk.c                        | 311 +++++++++++++++++-
 kernel/printk/sysctl.c                        |  64 +++-
 11 files changed, 599 insertions(+), 37 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-class-console
 create mode 100644 Documentation/admin-guide/per-console-loglevel.rst


base-commit: 9d882352bac8f2ff3753d691e2dc65fcaf738729
-- 
2.37.1