78c9df8116
Ido Schimmel says: ==================== mlxsw: Preparation for RTNL removal The driver currently acquires RTNL in its route insertion path, which contributes to very large control plane latencies. This patch set prepares mlxsw for RTNL removal from its route insertion path in a follow-up patch set. Patches #1-#2 protect shared resources - KVDL and counter pool - with their own locks. All allocations of these resources are currently performed under RTNL, so no locks were required. Patches #3-#7 ensure that updates to mirroring sessions only take place in case there are active mirroring sessions. This allows us to avoid taking RTNL when it is unnecessary, as updating of the mirroring sessions must be performed under RTNL for the time being. Patches #8-#10 replace the use of APIs that assume that RTNL is taken with their RCU counterparts. Specifically, patches #8 and #9 replace __in_dev_get_rtnl() with __in_dev_get_rcu() under RCU read-side critical section. Patch #10 replaces __dev_get_by_index() with dev_get_by_index_rcu(). Patches #11-#15 perform small adjustments in the code to make it easier to later introduce a router lock instead of relying on RTNL. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| 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 | ||
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.
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.