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2bf8e5acef
Currently put_uprobe() might trigger mutex_lock()/mutex_unlock(), which makes it unsuitable to be called from more restricted context like softirq. Let's make put_uprobe() agnostic to the context in which it is called, and use work queue to defer the mutex-protected clean up steps. RB tree removal step is also moved into work-deferred callback to avoid potential deadlock between softirq-based timer callback, added in the next patch, and the rest of uprobe code. We can rework locking altogher as a follow up, but that's significantly more tricky, so warrants its own patch set. For now, we need to make sure that changes in the next patch that add timer thread work correctly with existing approach, while concentrating on SRCU + timeout logic. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20241024044159.3156646-2-andrii@kernel.org |
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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 reStructuredText 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.