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The current default is to print all usage() output. This is overkill
in many case.
Addresses: https://github.com/karelzak/util-linux/issues/338
Signed-off-by: Karel Zak <kzak@redhat.com>
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This fixes a regression introduced in:
commit 7a4ea5664edba98bff28adec3a9c3cfb5763a495
"chrt: add control struct"
Previously (and as documented in the manpage) the default policy
was SCHED_RR. Now it's implicitly SCHED_OTHER (0) as the value
is not initialized explicitly anymore.
Test-command: chrt 90 echo hello
Reported-by: Patrick Pelissier <patrick.pelissier@gmail.com>
Addresses: http://bugs.debian.org/846572
Signed-off-by: Andreas Henriksson <andreas@fatal.se>
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Broken since 6f27e449. We could not enter the fallback
if HAVE_SCHED_SETATTR is not defined.
Two gcc warnings made this issue visible:
schedutils/chrt.c:247:1: warning: label 'fallback' defined but not used [-Wunused-label]
schedutils/chrt.c:266:9: warning: 'policy' may be used uninitialized in this function [-Wuninitialized]
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
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* do not reset 'nice' setting by sched_setattr(), if 'nice' setting
is not zero then chrt ends with EPERM for non-root users:
$ renice -n 5 -p $$; chrt -v -b 0 date
12475 (process ID) old priority 0, new priority 5
chrt: failed to set pid 0's policy: Operation not permitted
* it seems more elegant to always use old sched_setscheduler() API for
non-deadline policies; in this case we do not need getpriority()
to keep 'nice' unchanged.
Addresses: https://github.com/karelzak/util-linux/issues/359
Signed-off-by: Karel Zak <kzak@redhat.com>
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We have fallback for compilation with/without proper glibc and kernel
headers, but it's not enough, because people can switch between
kernels with and without the syscalls. (For example RT kernels for
RHEL/CentOS).
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1353340
Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Earlier message:
$ chrt -i 1 ls
chrt: failed to set pid 0's policy: Invalid argument
basically told 'something failed', while the new one tries to be more
helpful.
$ chrt -i 1 ls
chrt: unsupported priority value for the policy: 1: see --max for valid range
Addresses: https://bugs.debian.org/791707
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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These options are expecting an argument, and the long options struct already
required them.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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They got lost in acde3a05.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
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Looks like the logic was mistakenly changed in acde3a05.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
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This patch introduces
-d, --deadline
-T, --sched-runtime
-D, --sched-deadline
-P, --sched-period
command line options. The functionality is available only for Linux with
sched_setattr() [kernel >=3.14]
Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Reported-by: Martin Steigerwald <ms@teamix.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
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This adds a concise description of a tool to its usage text.
A first form of this patch was proposed by Steven Honeyman
(see http://www.spinics.net/lists/util-linux-ng/msg09994.html).
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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Only mount, umount, and blkid remains not using the macro because they
are print also library references.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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This makes it match the license of the man pages.
While there, also tweak some other comment lines.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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And mention in manual that the default is referring to the internal
default of this command, not the Linux system default. Manual page
example also tries to be a little more complete how to use the command.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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Also improve the clarity of some of them.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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The COPYING and Documentation/licenses/COPYING* files are being
replaced by files from GNU web site.
http://www.gnu.org/licenses/gpl-2.0.txt
http://www.gnu.org/licenses/lgpl-2.1.txt
Postal addresses to FSF in other files are updated to match with the
address in license files.
Reference: http://lists.gnu.org/archive/html/freefont-announce/2005-04/msg00001.html
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>
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Make horizontal list vertical and few other enhancements to
readability.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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chrt.c:158:16: warning: comparison of integers of different
signs: 'int' and 'unsigned long' [-Wsign-compare]
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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With this option we can operate on all the thread group of a process not just
for changes, but also when obtaining information via sched_getscheduler().
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
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master thread:
$ chrt --pid $(pidof firefox)
all threads:
$ chrt --all-tasks --pid $(pidof firefox)
Signed-off-by: Karel Zak <kzak@redhat.com>
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Currently this program works only with the master thread. Add a '-t'
option to propagate changes to the entire group of threads.
Example:
root@offworld:~/projects/util-linux/schedutils# ls /proc/2111/task/
2111 2112 2119 2121 2138 2139 2159 2160
root@offworld:~/projects/util-linux/schedutils# ./chrt -p 2111
pid 2111's current scheduling policy: SCHED_RR
pid 2111's current scheduling priority: 3
root@offworld:~/projects/util-linux/schedutils# ./chrt -t -p 2 2111
root@offworld:~/projects/util-linux/schedutils# ./chrt -p 2112
pid 2112's current scheduling policy: SCHED_RR
pid 2112's current scheduling priority: 2
root@offworld:~/projects/util-linux/schedutils# ./chrt -p 2111
pid 2111's current scheduling policy: SCHED_RR
pid 2111's current scheduling priority: 2
[kzak@redhat.com: - rename -t/--thread to -a/--all-tasks]
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
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It does not make sense to have writable large arrays of "struct
option" on the stack.
Signed-off-by: Karel Zak <kzak@redhat.com>
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Solaris lacks err, errx, warn and warnx. This also means the err.h header
doesn't exist. Removed err.h include from all files, and included err.h from
c.h instead if it exists, otherwise alternatives are provided.
Signed-off-by: Fabian Groffen <grobian@gentoo.org>
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This patch replaces a few functions used throughout the source:
* Renames getnum (from schedutils) to strtol_or_err
* Moves strtosize (from lib/strtosize.c)
* Moves xstrncpy (from include/xstrncpy.h)
* Adds strnlen, strnchr and strndup if not available (remove it from libmount utils)
A few Makefile.am files were modified to compile accordingly along with trivial renaming
in schedutils source code.
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
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Signed-off-by: Marek Polacek <mmpolacek@gmail.com>
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Reported-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
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[kzak@redhat.com: - clean up usage() function]
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
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In several languages the translations for "current" and "new" will
have to be slightly different depending on whether they apply to
"policy" or "priority". (As a general rule, translatable messages
should be full sentences, and not partial ones with optional words
filled in via %s.)
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
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Here is a patch to fix the build on GNU/Hurd.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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This new option allows to set SCHED_RESET_ON_FORK flag for FIFO and RR
policies.
Example:
$ chrt --fifo --reset-on-fork 1 /bin/bash
$ schedutils/chrt --pid $$
pid 31579's current scheduling policy: SCHED_FIFO|SCHED_RESET_ON_FORK
pid 31579's current scheduling priority: 1
Signed-off-by: Karel Zak <kzak@redhat.com>
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From 9262c9832134f8a33ac2ea2854dc6d20acc712d1 Mon Sep 17 00:00:00 2001
From: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Date: Tue, 2 Feb 2010 16:57:23 +0100
Subject: [PATCH] Add support for SCHED_RESET_ON_FORK to chrt
SCHED_RESET_ON_FORK has been added in 2.6.31. If a thread has this flag
set, chrt reports "unknown" policy, which is confusing.
The patch adds support for this new flag. It will (can) only be applied
to SCHED_FIFO or SCHED_RR, so there's no need to catch the other
scheduling policies.
Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
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