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4265df667b
Acquire SRCU before taking the gpc spinlock in wait_pending_event() so as to be consistent with all other functions that acquire both locks. It's not illegal to acquire SRCU inside a spinlock, nor is there deadlock potential, but in general it's preferable to order locks from least restrictive to most restrictive, e.g. if wait_pending_event() needed to sleep for whatever reason, it could do so while holding SRCU, but would need to drop the spinlock. Signed-off-by: Peng Hao <flyingpeng@tencent.com> Reviewed-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/CAPm50a++Cb=QfnjMZ2EnCj-Sb9Y4UM-=uOEtHAcjnNLCAAf-dQ@mail.gmail.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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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 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.