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commit9cf57731b6("watchdog/softlockup: Replace "watchdog/%u" threads with cpu_stop_work") ensures that the watchdog is reliably touched during a task switch. As a result the check for an unnoticed task switch is not longer needed. Remove the relevant code, which effectively reverts commitb1a8de1f53("softlockup: make detector be aware of task switch of processes hogging cpu") Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Ziljstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20191024114928.15377-2-pmladek@suse.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.
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.