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The next patch would require doing postorder traversal of individual subprograms. Facilitate this by moving env->cfg.insn_postorder computation from check_cfg() to a separate pass, as check_cfg() descends into called subprograms (and it needs to, because of merge_callee_effects() logic). env->cfg.insn_postorder is used only by compute_live_registers(), this function does not track cross subprogram dependencies, thus the change does not affect it's operation. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20250918-callchain-sensitive-liveness-v3-5-c3cd27bacc60@gmail.com Signed-off-by: Alexei Starovoitov <ast@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 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.