mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-26 09:52:31 -04:00
fcbcc0e700
It is possible that an over-long grace period will end while the RCU CPU stall warning message is printing. In this case, the estimate of the offending grace period's duration can be erroneous due to refetching of rcu_state.gp_start, which will now be the time of the newly started grace period. Computation of this duration clearly needs to use the start time for the old over-long grace period, not the fresh new one. This commit avoids such errors by causing both print_other_cpu_stall() and print_cpu_stall() to reuse the value previously fetched by their caller. Signed-off-by: Zhaolong Zhang <zhangzl2013@126.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.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.