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Hou Tao says: ==================== From: Hou Tao <houtao1@huawei.com> Hi, The patchset aims to fix one problem of bpf memory allocator destruction when there is PREEMPT_RT kernel or kernel with arch_irq_work_has_interrupt() being false (e.g. 1-cpu arm32 host or mips). The root cause is that there may be busy refill_work when the allocator is destroying and it may incur oops or other problems as shown in patch #1. Patch #1 fixes the problem by waiting for the completion of irq work during destroying and patch #2 is just a clean-up patch based on patch #1. Please see individual patches for more details. Comments are always welcome. Change Log: v2: * patch 1: fix typos and add notes about the overhead of irq_work_sync() * patch 1 & 2: add Acked-by tags from sdf@google.com v1: https://lore.kernel.org/bpf/20221019115539.983394-1-houtao@huaweicloud.com/T/#t ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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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.