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

Chris Down
2022-07-20T17:48:12Z

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
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2.37.1