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[root@rk3399:/]# echo 0 > /sys/devices/system/cpu/cpu4/online [ 43.525595] CPU4: shutdown [ 43.525853] psci: CPU4 killed. [root@rk3399:/]# echo 0 > /sys/devices/system/cpu/cpu5/online [ 47.378450] cpu cpu4: Dropping the link to regulator.23 [ 47.379309] CPU5: shutdown [ 47.379568] psci: CPU5 killed. [root@rk3399:/]# echo 1 > /sys/devices/system/cpu/cpu5/online [ 53.363116] Detected PIPT I-cache on CPU5 [ 53.363502] GICv3: CPU5: found redistributor 101 region 0:0x00000000fefa0000 [ 53.364157] CPU5: Booted secondary processor 0x0000000101 [0x410fd082] [ 53.365461] cpu cpu5: Linked as a consumer to regulator.23 [ 53.366216] cpu cpu5: opp_list_debug_create_link: Failed to create link [ 53.366793] cpu cpu5: _add_opp_dev: Failed to register opp debugfs (-12) Change-Id: I9b066f9712b7f8426561e03a538a9a5c45138ab0 Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
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.