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Linux kernel source tree
7489cd43a2
Replace the completion by a waitqueue for synchronization from IRQ handler to task. For short timeouts, use hrtimers, else use timers. Usecase: avoid blocking the I2C bus for too long when an issue occurs. The threshold picked is one jiffy: if timeout is below that, use hrtimers. This threshold is NOT configurable. Implement behavior but do NOT change fetching of timeout. This means the timeout is unchanged (200ms) and the hrtimer case will never trigger. A waitqueue is used because it supports both desired timeout approaches. See wait_event_timeout() and wait_event_hrtimeout(). An atomic boolean serves as synchronization condition. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Andi Shyti <andi.shyti@kernel.org> Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| 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.
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.