d0e4a193c3
Linux-3.7 added CONFIG_BOOTPARAM_HOTPLUG_CPU0,
allowing systems to offline cpu0.
But when cpu0 is offline, cpupower monitor will not display all
processor and Mperf information:
[root@intel-skylake-dh-03 cpupower]# ./cpupower monitor
WARNING: at least one cpu is offline
|Idle_Stats
CPU | POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S
4| 0.00| 0.00| 0.00| 0.00| 0.90| 0.00| 96.13
1| 0.00| 0.00| 5.49| 0.00| 0.01| 0.00| 92.26
5| 0.00| 0.00| 0.00| 0.00| 0.46| 0.00| 99.50
2| 45.42| 0.00| 0.00| 0.00| 22.94| 0.00| 28.84
6| 0.00| 37.54| 0.00| 0.00| 0.00| 0.00| 0.00
3| 0.00| 0.00| 0.00| 0.00| 0.30| 0.00| 91.99
7| 0.00| 0.00| 0.00| 0.00| 4.70| 0.00| 0.70
This patch replaces the hard-coded use of cpu0 in cpupower with the
current cpu, allowing it to run without a cpu0.
After the patch is applied,
[root@intel-skylake-dh-03 cpupower]# ./cpupower monitor
WARNING: at least one cpu is offline
|Nehalem || Mperf || Idle_Stats
CPU | C3 | C6 | PC3 | PC6 || C0 | Cx | Freq || POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S
4| 0.01| 1.27| 0.00| 0.00|| 0.04| 99.96| 3957|| 0.00| 0.00| 0.00| 0.00| 1.43| 0.00| 98.52
1| 0.00| 98.82| 0.00| 0.00|| 0.05| 99.95| 3361|| 0.00| 0.00| 0.01| 0.00| 0.03| 0.00| 99.88
5| 0.00| 98.82| 0.00| 0.00|| 0.09| 99.91| 3917|| 0.00| 0.00| 0.00| 0.00| 99.38| 0.00| 0.50
2| 0.33| 0.00| 0.00| 0.00|| 0.00|100.00| 3890|| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00|100.00
6| 0.33| 0.00| 0.00| 0.00|| 0.01| 99.99| 3903|| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 99.99
3| 0.01| 0.71| 0.00| 0.00|| 0.06| 99.94| 3678|| 0.00| 0.00| 0.00| 0.00| 0.80| 0.00| 99.13
7| 0.01| 0.71| 0.00| 0.00|| 0.03| 99.97| 3538|| 0.00| 0.69| 11.70| 0.00| 0.00| 0.00| 87.57
There are some minor cleanups included in this patch.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.