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e4ff70a8e3
As a follow on to the recent rework of __cxl_parse_cfmws() to always return errors [1], use cleanup.h helpers to remove goto and other cleanups now that logging is moved to the cxl_parse_cfmws() wrapper. This ends up adding more code than it deletes, but __cxl_parse_cfmws() itself does get smaller. The takeaway from the cond_no_free_ptr() discussion [2] was to not add new macros to handle the cases where no_free_ptr() is awkward, instead rework the code to have helpers and clearer delineation of responsibility. Now one might say that __free(del_cxl_resource) is excessive given it is immediately registered with add_or_reset_cxl_resource(). The rationale for keeping it is that it forces use of "no_free_ptr()" on the argument passed to add_or_reset_cxl_resource(). That in turn makes it clear that @res is NULL for the rest of the function which is part of the point of the cleanup helpers, to turn subtle use after free errors [3] into loud NULL pointer de-references. Link: http://lore.kernel.org/r/170820177238.631006.1012639681618409284.stgit@dwillia2-xfh.jf.intel.com [1] Link: http://lore.kernel.org/r/CAHk-=whBVhnh=KSeBBRet=E7qJAwnPR_aj5em187Q3FiD+LXnA@mail.gmail.com [2] Link: http://lore.kernel.org/r/20230714093146.2253438-1-leitao@debian.org [3] Reported-by: Jonathan Cameron <Jonathan.Cameron@Huawei.com> Closes: http://lore.kernel.org/r/20240219124041.00002bda@Huawei.com Reviewed-by: Alison Schofield <alison.schofield@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/171235474028.2718248.14109646123143505522.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> |
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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 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.