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08beb547a1
flush_slab() is called either as part IPI handler on given live cpu, or as a cleanup on behalf of another cpu that went offline. The first case needs to protect updating the kmem_cache_cpu fields with disabled irqs. Currently the whole call happens with irqs disabled by the IPI handler, but the following patch will change from IPI to workqueue, and flush_slab() will have to disable irqs (to be replaced with a local lock later) in the critical part. To prepare for this change, replace the call to flush_slab() for the dead cpu handling with an opencoded variant that will not disable irqs nor take a local lock. Suggested-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
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| 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.