5a951c4e7e
The watchdog heartbeat timestamp is updated when the local heartbeat timer fires (or touch_nmi_watchdog() is called). This is an interesting data point, so don't overwrite it when the soft-NMI interrupt detects a hard lockup. That code came from a pre- merge version to prevent hard lockup messages flood, but that's taken care of with the stuck CPU logic now, so there is no reason to update the heartbeat timestamp here. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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.