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authorLinus Torvalds <torvalds@linux-foundation.org>2020-08-05 08:47:54 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-05 08:47:54 +0300
commit2324d50d051ec0f14a548e78554fb02513d6dcef (patch)
tree467e5622cf878daed7c00be90a02a1f036de04ad /Documentation/admin-guide/sysctl
parenta754292348bf88ec6b55563eca4faba7dcfe2ae7 (diff)
parent2c12c8103d8f15790cf880f1545dafa36acb004a (diff)
downloadlinux-2324d50d051ec0f14a548e78554fb02513d6dcef.tar.xz
Merge tag 'docs-5.9' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet: "It's been a busy cycle for documentation - hopefully the busiest for a while to come. Changes include: - Some new Chinese translations - Progress on the battle against double words words and non-HTTPS URLs - Some block-mq documentation - More RST conversions from Mauro. At this point, that task is essentially complete, so we shouldn't see this kind of churn again for a while. Unless we decide to switch to asciidoc or something...:) - Lots of typo fixes, warning fixes, and more" * tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits) scripts/kernel-doc: optionally treat warnings as errors docs: ia64: correct typo mailmap: add entry for <alobakin@marvell.com> doc/zh_CN: add cpu-load Chinese version Documentation/admin-guide: tainted-kernels: fix spelling mistake MAINTAINERS: adjust kprobes.rst entry to new location devices.txt: document rfkill allocation PCI: correct flag name docs: filesystems: vfs: correct flag name docs: filesystems: vfs: correct sync_mode flag names docs: path-lookup: markup fixes for emphasis docs: path-lookup: more markup fixes docs: path-lookup: fix HTML entity mojibake CREDITS: Replace HTTP links with HTTPS ones docs: process: Add an example for creating a fixes tag doc/zh_CN: add Chinese translation prefer section doc/zh_CN: add clearing-warn-once Chinese version doc/zh_CN: add admin-guide index doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label futex: MAINTAINERS: Re-add selftests directory ...
Diffstat (limited to 'Documentation/admin-guide/sysctl')
-rw-r--r--Documentation/admin-guide/sysctl/fs.rst2
-rw-r--r--Documentation/admin-guide/sysctl/kernel.rst42
-rw-r--r--Documentation/admin-guide/sysctl/vm.rst2
3 files changed, 39 insertions, 7 deletions
diff --git a/Documentation/admin-guide/sysctl/fs.rst b/Documentation/admin-guide/sysctl/fs.rst
index 2a45119e3331..f48277a0a850 100644
--- a/Documentation/admin-guide/sysctl/fs.rst
+++ b/Documentation/admin-guide/sysctl/fs.rst
@@ -261,7 +261,7 @@ directories like /tmp. The common method of exploitation of this flaw
is to cross privilege boundaries when following a given symlink (i.e. a
root process follows a symlink belonging to another user). For a likely
incomplete list of hundreds of examples across the years, please see:
-http://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=/tmp
+https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=/tmp
When set to "0", symlink following behavior is unrestricted.
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index 55bf6b4de4ec..2ae9669eb22c 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -235,7 +235,7 @@ This toggle indicates whether unprivileged users are prevented
from using ``dmesg(8)`` to view messages from the kernel's log
buffer.
When ``dmesg_restrict`` is set to 0 there are no restrictions.
-When ``dmesg_restrict`` is set set to 1, users must have
+When ``dmesg_restrict`` is set to 1, users must have
``CAP_SYSLOG`` to use ``dmesg(8)``.
The kernel config option ``CONFIG_SECURITY_DMESG_RESTRICT`` sets the
@@ -335,8 +335,8 @@ Path for the hotplug policy agent.
Default value is "``/sbin/hotplug``".
-hung_task_all_cpu_backtrace:
-================
+hung_task_all_cpu_backtrace
+===========================
If this option is set, the kernel will send an NMI to all CPUs to dump
their backtraces when a hung task is detected. This file shows up if
@@ -646,8 +646,8 @@ rate for each task.
scanned for a given scan.
-oops_all_cpu_backtrace:
-================
+oops_all_cpu_backtrace
+======================
If this option is set, the kernel will send an NMI to all CPUs to dump
their backtraces when an oops event occurs. It should be used as a last
@@ -996,6 +996,38 @@ pty
See Documentation/filesystems/devpts.rst.
+random
+======
+
+This is a directory, with the following entries:
+
+* ``boot_id``: a UUID generated the first time this is retrieved, and
+ unvarying after that;
+
+* ``entropy_avail``: the pool's entropy count, in bits;
+
+* ``poolsize``: the entropy pool size, in bits;
+
+* ``urandom_min_reseed_secs``: obsolete (used to determine the minimum
+ number of seconds between urandom pool reseeding).
+
+* ``uuid``: a UUID generated every time this is retrieved (this can
+ thus be used to generate UUIDs at will);
+
+* ``write_wakeup_threshold``: when the entropy count drops below this
+ (as a number of bits), processes waiting to write to ``/dev/random``
+ are woken up.
+
+If ``drivers/char/random.c`` is built with ``ADD_INTERRUPT_BENCH``
+defined, these additional entries are present:
+
+* ``add_interrupt_avg_cycles``: the average number of cycles between
+ interrupts used to feed the pool;
+
+* ``add_interrupt_avg_deviation``: the standard deviation seen on the
+ number of cycles between interrupts used to feed the pool.
+
+
randomize_va_space
==================
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst
index d46d5b7013c6..d997cc3c26d0 100644
--- a/Documentation/admin-guide/sysctl/vm.rst
+++ b/Documentation/admin-guide/sysctl/vm.rst
@@ -583,7 +583,7 @@ trimming of allocations is initiated.
The default value is 1.
-See Documentation/nommu-mmap.txt for more information.
+See Documentation/admin-guide/mm/nommu-mmap.rst for more information.
numa_zonelist_order