b69c99463d
The purpose of this test is to verify that after a short activity passes, the reported time is reasonable: not zero (which could be reported by mistake), and not something outrageous (which would be indicative of an issue in used units). However, the idle time is reported in units of clock_t, or hundredths of second. If the initial sequence of commands is very quick, it is possible that the idle time is reported as just flat-out zero. When this test was recently enabled in our nightly regression, we started seeing spurious failures for exactly this reason. Therefore buffer the delay leading up to the test with a sleep, to make sure there is no legitimate way of reporting 0. Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.