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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 19:25:25 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 19:25:25 -0800
commit255442c93843f52b6891b21d0b485bf2c97f93c3 (patch)
tree8fd1daa752dbfa4721f64421ab7d4e695605d9f7 /Documentation/sysctl
parentd76e0a050e0f5e7c00e6d334f758178bbc16eb98 (diff)
parentae17a87dd7c79fa742ef5dcf06d1095eec4e1925 (diff)
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Merge tag 'docs-4.16' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet: "Documentation updates for 4.16. New stuff includes refcount_t documentation, errseq documentation, kernel-doc support for nested structure definitions, the removal of lots of crufty kernel-doc support for unused formats, SPDX tag documentation, the beginnings of a manual for subsystem maintainers, and lots of fixes and updates. As usual, some of the changesets reach outside of Documentation/ to effect kerneldoc comment fixes. It also adds the new LICENSES directory, of which Thomas promises I do not need to be the maintainer" * tag 'docs-4.16' of git://git.lwn.net/linux: (65 commits) linux-next: docs-rst: Fix typos in kfigure.py linux-next: DOC: HWPOISON: Fix path to debugfs in hwpoison.txt Documentation: Fix misconversion of #if docs: add index entry for networking/msg_zerocopy Documentation: security/credentials.rst: explain need to sort group_list LICENSES: Add MPL-1.1 license LICENSES: Add the GPL 1.0 license LICENSES: Add Linux syscall note exception LICENSES: Add the MIT license LICENSES: Add the BSD-3-clause "Clear" license LICENSES: Add the BSD 3-clause "New" or "Revised" License LICENSES: Add the BSD 2-clause "Simplified" license LICENSES: Add the LGPL-2.1 license LICENSES: Add the LGPL 2.0 license LICENSES: Add the GPL 2.0 license Documentation: Add license-rules.rst to describe how to properly identify file licenses scripts: kernel_doc: better handle show warnings logic fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at doc: md: Fix a file name to md-fault.c in fault-injection.txt errseq: Add to documentation tree ...
Diffstat (limited to 'Documentation/sysctl')
-rw-r--r--Documentation/sysctl/kernel.txt17
1 files changed, 16 insertions, 1 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 694968c7523c..412314eebda6 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -34,6 +34,7 @@ show up in /proc/sys/kernel:
- hostname
- hotplug
- hardlockup_all_cpu_backtrace
+- hardlockup_panic
- hung_task_panic
- hung_task_check_count
- hung_task_timeout_secs
@@ -313,6 +314,19 @@ will be initiated.
1: on detection capture more debug information.
==============================================================
+hardlockup_panic:
+
+This parameter can be used to control whether the kernel panics
+when a hard lockup is detected.
+
+ 0 - don't panic on hard lockup
+ 1 - panic on hard lockup
+
+See Documentation/lockup-watchdogs.txt for more information. This can
+also be set using the nmi_watchdog kernel parameter.
+
+==============================================================
+
hotplug:
Path for the hotplug policy agent.
@@ -377,7 +391,8 @@ kptr_restrict:
This toggle indicates whether restrictions are placed on
exposing kernel addresses via /proc and other interfaces.
-When kptr_restrict is set to (0), the default, there are no restrictions.
+When kptr_restrict is set to 0 (the default) the address is hashed before
+printing. (This is the equivalent to %p.)
When kptr_restrict is set to (1), kernel pointers printed using the %pK
format specifier will be replaced with 0's unless the user has CAP_SYSLOG