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0c1494015f
- Move LoongArch and RISC-V ret_from_fork() implementations to C code so
that syscall_exit_user_mode() can be inlined.
- Split the RISC-V ret_from_fork() implementation into return to user and
return to kernel, which gives a measurable performance improvement.
- Inline syscall_exit_user_mode() which benefits all architectures by
avoiding a function call and letting the compiler do better
optimizations.
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Merge tag 'core-entry-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core entry code updates from Thomas Gleixner:
"Updates for the generic and architecture entry code:
- Move LoongArch and RISC-V ret_from_fork() implementations to C code
so that syscall_exit_user_mode() can be inlined
- Split the RISC-V ret_from_fork() implementation into return to user
and return to kernel, which gives a measurable performance
improvement
- Inline syscall_exit_user_mode() which benefits all architectures by
avoiding a function call and letting the compiler do better
optimizations"
* tag 'core-entry-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
LoongArch: entry: Fix include order
entry: Inline syscall_exit_to_user_mode()
LoongArch: entry: Migrate ret_from_fork() to C
riscv: entry: Split ret_from_fork() into user and kernel
riscv: entry: Convert ret_from_fork() to C
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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.