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As parsing the sysfs entries can take a long time, add progress information. The progress logic will update the stats on every second, or on 1% steps of the progress. When STDERR is a console, it will use a single line, using a VT-100 command to erase the line before rewriting it. Otherwise, it will put one message on a separate line. That would help to identify what parts of sysfs checking that it is taking more time to process. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/4e581dcbec21ad8a60fff883498018f96f13dd1c.1632823172.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.
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.