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The SBI PMU extension requires a firmware to be aware of the event to counter/mhpmevent mappings supported by the hardware. OpenSBI may use DeviceTree to describe the PMU mappings. This binding is currently described in markdown in OpenSBI (since v1.0 in Dec 2021) & used by QEMU since v7.2.0. Import the binding for use while validating dtb dumps from QEMU and upcoming hardware (eg JH7110 SoC) that will make use of the event mapping. Link: https://github.com/riscv-software-src/opensbi/blob/master/docs/pmu_support.md Link: https://github.com/riscv-non-isa/riscv-sbi-doc/blob/master/riscv-sbi.adoc # Performance Monitoring Unit Extension Co-developed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20230113205435.122712-1-conor@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
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.