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A handful of fixes for reasonably obnoxious documentation issues.

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Merge tag 'docs-fixes' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A handful of fixes for reasonably obnoxious documentation issues"

* tag 'docs-fixes' of git://git.lwn.net/linux:
  scripts: documentation-file-ref-check: Add line break before exit
  scripts/kernel-doc: Add missing close-paren in c:function directives
  docs: admin-guide: merge sections for the kernel.modprobe sysctl
  docs: timekeeping: Use correct prototype for deprecated functions
This commit is contained in:
Linus Torvalds 2020-04-17 13:10:50 -07:00
commit 90280eaa88
4 changed files with 24 additions and 33 deletions
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47
Documentation/admin-guide/sysctl/kernel.rst
View File

@ -390,9 +390,17 @@ When ``kptr_restrict`` is set to 2, kernel pointers printed using
modprobe
========
This gives the full path of the modprobe command which the kernel will
use to load modules. This can be used to debug module loading
requests::
The full path to the usermode helper for autoloading kernel modules,
by default "/sbin/modprobe". This binary is executed when the kernel
requests a module. For example, if userspace passes an unknown
filesystem type to mount(), then the kernel will automatically request
the corresponding filesystem module by executing this usermode helper.
This usermode helper should insert the needed module into the kernel.
This sysctl only affects module autoloading. It has no effect on the
ability to explicitly insert modules.
This sysctl can be used to debug module loading requests::
echo '#! /bin/sh' > /tmp/modprobe
echo 'echo "$@" >> /tmp/modprobe.log' >> /tmp/modprobe
@ -400,10 +408,15 @@ requests::
chmod a+x /tmp/modprobe
echo /tmp/modprobe > /proc/sys/kernel/modprobe
This only applies when the *kernel* is requesting that the module be
loaded; it won't have any effect if the module is being loaded
explicitly using ``modprobe`` from userspace.
Alternatively, if this sysctl is set to the empty string, then module
autoloading is completely disabled. The kernel will not try to
execute a usermode helper at all, nor will it call the
kernel_module_request LSM hook.
If CONFIG_STATIC_USERMODEHELPER=y is set in the kernel configuration,
then the configured static usermode helper overrides this sysctl,
except that the empty string is still accepted to completely disable
module autoloading as described above.
modules_disabled
================
@ -446,28 +459,6 @@ Notes:
successful IPC object allocation. If an IPC object allocation syscall
fails, it is undefined if the value remains unmodified or is reset to -1.
modprobe:
=========
The path to the usermode helper for autoloading kernel modules, by
default "/sbin/modprobe". This binary is executed when the kernel
requests a module. For example, if userspace passes an unknown
filesystem type to mount(), then the kernel will automatically request
the corresponding filesystem module by executing this usermode helper.
This usermode helper should insert the needed module into the kernel.
This sysctl only affects module autoloading. It has no effect on the
ability to explicitly insert modules.
If this sysctl is set to the empty string, then module autoloading is
completely disabled. The kernel will not try to execute a usermode
helper at all, nor will it call the kernel_module_request LSM hook.
If CONFIG_STATIC_USERMODEHELPER=y is set in the kernel configuration,
then the configured static usermode helper overrides this sysctl,
except that the empty string is still accepted to completely disable
module autoloading as described above.
nmi_watchdog
============

6
Documentation/core-api/timekeeping.rst
View File

@ -154,9 +154,9 @@ architectures. These are the recommended replacements:
Use ktime_get() or ktime_get_ts64() instead.
.. c:function:: struct timeval do_gettimeofday( void )
struct timespec getnstimeofday( void )
struct timespec64 getnstimeofday64( void )
.. c:function:: void do_gettimeofday( struct timeval * )
void getnstimeofday( struct timespec * )
void getnstimeofday64( struct timespec64 * )
void ktime_get_real_ts( struct timespec * )
ktime_get_real_ts64() is a direct replacement, but consider using

2
scripts/documentation-file-ref-check
View File

@ -25,7 +25,7 @@ my $fix = 0;
my $warn = 0;
if (! -d ".git") {
printf "Warning: can't check if file exists, as this is not a git tree";
printf "Warning: can't check if file exists, as this is not a git tree\n";
exit 0;
}

2
scripts/kernel-doc
View File

@ -853,7 +853,7 @@ sub output_function_rst(%) {
if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
# pointer-to-function
print $1 . $parameter . ") (" . $2;
print $1 . $parameter . ") (" . $2 . ")";
} else {
print $type . " " . $parameter;
}