• Philippe Gerum's avatar
    genirq: add generic I-pipe core · d47c5520
    Philippe Gerum authored
    This commit provides the arch-independent bits for implementing the
    interrupt pipeline core, a lightweight layer introducing a separate,
    high-priority execution stage for handling all IRQs in pseudo-NMI
    mode, which cannot be delayed by the regular kernel code. See
    Documentation/ipipe.rst for details about interrupt pipelining.
    Architectures which support interrupt pipelining should select
    HAVE_IPIPE_SUPPORT, along with implementing the required arch-specific
    code. In such a case, CONFIG_IPIPE becomes available to the user via
    the Kconfig interface for enabling the feature.