chcpu.c mixed maxcpus (number of cpus) and setsize (size of CPU bit
mask). It effectively limits number of CPUs to 1/8 of the supported
amount.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Cc: Michael Matz <matz@suse.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
The old CPU macros are limited to 1024 cores. As a result, lscpu cannot
count sockets on large systems. Use new scalable macros.
Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
Cc: Michael Matz <matz@suse.de>
changed in include/c.h and applied via sed:
sed -i 's/fprintf.*\(USAGE_MAN_TAIL.*\)/printf(\1/' $(git ls-files -- "*.c")
sed -i 's/print_usage_help_options\(.*\);/printf(USAGE_HELP_OPTIONS\1);/' $(git ls-files -- "*.c")
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
Now we are always using the same text also for commands
which had still hardcoded descriptions or where we can't
use the standard print_usage_help_options macro.
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
text-utils/tailf.c:69:21: warning: Using plain integer as NULL pointer
Since many 'struct option' has used zero as NULL make them more readable in
same go by reindenting, and using named argument requirements.
Reference: https://lwn.net/Articles/93577/
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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>
The code currently always return EXIT_SUCCESS, that's strange. It
seems better to return 0 on success, 1 on complete failure and 64 on
partial success.
Signed-off-by: Karel Zak <kzak@redhat.com>
Instead of printing error messages like "I/O resource busy" which are
supplied by strerror, give better feedback if the reason of failure
is known.
E.g. taking the last cpu offline cannot succeed, therefore print a
message that gives this "hint".
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Use the common path access functions. In order to simplify chcpu also implement
and use path_writestr() which writes a string to the path specified.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reduce code duplication and print better error message if an
unsupported cpu number was passed.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
chcpu can modify the logical state of CPUs. It can enable and disable CPUs,
scan for new CPUs, change the CPU dispatching mode of the underlying
hypervisor and request (configure) or give logical CPUs back (deconfigure)
to the the underlying hypervisor.
This is quite useful if you work a lot with virtual servers, since doing all
the configuration stuff directly via sysfs becomes a pain.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
