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f9ed31214e
Further limit verification in softirq (a.k.a. BH) context to cases where rescheduling of the interrupted task is not pending. This helps prevent the CPU from spending too long in softirq context. Note that handle_softirqs() in kernel/softirq.c already stops running softirqs in this same case. However, that check is too coarse-grained, since many I/O requests can be processed in a single BLOCK_SOFTIRQ. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
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 reStructuredText 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.