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7e28c5af4e
The ->rcu_qs_ctr counter was intended to allow providing a lightweight report of a quiescent state to all RCU flavors. But now that there is only one flavor of RCU in any one running kernel, there is no point in having this feature. This commit therefore removes the ->rcu_qs_ctr field from the rcu_dynticks structure and the ->rcu_qs_ctr_snap field from the rcu_data structure. This results in the "rqc" option to the rcu_fqs trace event no longer being used, so this commit also removes the "rqc" description from the header comment. While in the neighborhood, this commit also causes the forward-progress request .rcu_need_heavy_qs be set one jiffies_till_sched_qs interval later in the grace period than the first setting of .rcu_urgent_qs. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> |
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| arch | ||
| block | ||
| 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.