Add explanation of mutexes and function variants #309
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Add documentation for Linux kernel mutexes, detailing ownership, initialization, and the behavior of _interruptible, nested and try-lock variants for synchronization.
jserv
reviewed
Apr 24, 2025
| This prior locking mechanism aids in managing lock acquisition and preventing deadlocks, | ||
| often employing a subclass parameter for more precise deadlock detection. | ||
| The latter variant combines nested locking with the ability for the waiting process to be interrupted by signals. | ||
| Another function is \cpp|mutex_trylock()|, which attempts to acquire the mutex without blocking. |
There was a problem hiding this comment.
You can mention the use of mutex in interrupt context. See https://stackoverflow.com/questions/36815420/why-isnt-mutex-trylock-safe-for-use-in-interrupts
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Add documentation for Linux kernel mutexes, detailing ownership, initialization, and the behavior of _interruptible, nested and try-lock variants for synchronization.
Summary by Bito
This pull request enhances the documentation for mutexes in the Linux kernel, detailing mutex ownership, initialization, and the behavior of various mutex functions. These improvements aim to aid developers in understanding and utilizing kernel synchronization more effectively.Unit tests added: False
Estimated effort to review (1-5, lower is better): 2