35b6873598
When maxcpus=X kernel argument is used, we parse the ACPI tables only for the first X cpus. The per-cpu ACPI data include the _PSD tables which gives information about related cpus. cppc_cpufreq and acpi-cpufreq parses the table once during init to deduce the related cpus. If a user brings a new cpu online after boot the related cpu data becomes incorrect. acpi_get_psd_map() in acpi_cppc.c returns error if it fails to find the parsed ACPI data for possible CPU resulting in cppc_cpufreq initialization failure. With this change we will probe all possible CPUs prior to cpufreq initialization, but will bring only setup_max_cpus online. nr_cpus kernel parameter can be used to restict even parsing per-cpu ACPI tables. Signed-off-by: Prashanth Prakash <pprakash@codeaurora.org> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| 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 | ||
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.