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Currently, rcutorture relies solely on the progress of rcu_torture_writer() to judge grace-period forward progress. In theory, this is the gold standard of forward progress, but in practice rcutorture separately detects and reports rcu_torture_writer() stalls. This commit therefore adds the grace-period sequence number (when provided) to the judgment of grace-period forward progress, which makes it easier to distinguish between failure of actual grace periods to progress on the one hand and downstream forward-progress failures on the other. For example, given this change, if rcu_torture_writer() stalls, but rcu_torture_fwd_prog() does not complain, then the grace-period computation is working, which is a hint that the failure lies in callback processing, wakeup of the rcu_torture_writer() kthread, or similar. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.