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The entry/exit handling for exceptions, interrupts, syscalls and KVM is not really documented except for some comments. Fill the gaps. Signed-off-by: Thomas Gleixner <tglx@linutronix.de Co-developed-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> ---- Changes since v3: - s/nointr/noinstr/ Changes since v2: - No big content changes, just style corrections, so it should be pretty clean at this stage. In the light of this, I kept Mark's Reviewed-by. - Paul's style and paragraph re-writes - Randy's style comments - Add links to transition type sections Documentation/core-api/entry.rst | 261 +++++++++++++++++++++++++++++++ Documentation/core-api/index.rst | 8 + 2 files changed, 269 insertions(+) create mode 100644 Documentation/core-api/entry.rst Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20220110105044.94423-1-nsaenzju@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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======================
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Core API Documentation
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======================
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This is the beginning of a manual for core kernel APIs. The conversion
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(and writing!) of documents for this manual is much appreciated!
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Core utilities
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==============
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This section has general and "core core" documentation. The first is a
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massive grab-bag of kerneldoc info left over from the docbook days; it
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should really be broken up someday when somebody finds the energy to do
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it.
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.. toctree::
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:maxdepth: 1
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kernel-api
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workqueue
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printk-basics
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printk-formats
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symbol-namespaces
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Data structures and low-level utilities
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=======================================
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Library functionality that is used throughout the kernel.
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.. toctree::
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:maxdepth: 1
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kobject
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kref
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assoc_array
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xarray
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idr
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circular-buffers
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rbtree
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generic-radix-tree
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packing
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bus-virt-phys-mapping
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this_cpu_ops
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timekeeping
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errseq
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Low level entry and exit
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========================
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.. toctree::
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:maxdepth: 1
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entry
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Concurrency primitives
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======================
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How Linux keeps everything from happening at the same time. See
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Documentation/locking/index.rst for more related documentation.
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.. toctree::
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:maxdepth: 1
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refcount-vs-atomic
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irq/index
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local_ops
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padata
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../RCU/index
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Low-level hardware management
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=============================
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Cache management, managing CPU hotplug, etc.
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.. toctree::
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:maxdepth: 1
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cachetlb
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cpu_hotplug
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memory-hotplug
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genericirq
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protection-keys
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Memory management
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=================
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How to allocate and use memory in the kernel. Note that there is a lot
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more memory-management documentation in Documentation/vm/index.rst.
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.. toctree::
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:maxdepth: 1
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memory-allocation
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unaligned-memory-access
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dma-api
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dma-api-howto
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dma-attributes
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dma-isa-lpc
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mm-api
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genalloc
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pin_user_pages
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boot-time-mm
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gfp_mask-from-fs-io
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Interfaces for kernel debugging
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===============================
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.. toctree::
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:maxdepth: 1
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debug-objects
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tracepoint
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debugging-via-ohci1394
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Everything else
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===============
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Documents that don't fit elsewhere or which have yet to be categorized.
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.. toctree::
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:maxdepth: 1
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librs
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.. only:: subproject and html
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Indices
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=======
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* :ref:`genindex`
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