[p3n1cillin]

What

Once PS5MC (PPSA99420, Kodi 22, catalog release) gets past mimalloc (#5184), its embedded Python fails while importing posix, and Kodi exits:

[stderr]   File "<frozen importlib._bootstrap_external>", line 38, in <module>
[stderr] RuntimeError: cannot read ticks_per_second
critical <general>: XBPython: Python initialization failed in _PyImport_InitExternal: external importer setup failed (exit code 0); Python add-ons are unavailable
critical <general>: CServiceManager::InitStageTwo: Unable to initialize the python binding modules
ERROR: Unable to create application. Exiting

CPython raises "cannot read ticks_per_second" when sysconf(_SC_CLK_TCK) is below 1. AnyPS5's sysconf returned -1 with EINVAL for _SC_CLK_TCK (3), since it knew only the page size, the processor counts and the physical pages.

sysconf(_SC_CLK_TCK) now returns 128: FreeBSD's sysconf returns CLK_TCK, which time.h defines as 128, and _SC_CLK_TCK is 3 in FreeBSD's unistd.h. AnyPS5 has no times() that reports ticks at another rate. The console's value is not checked; this is recorded under Unknown function info in docs/dev/debt/libkernel.md.

Tested

• PS5MC PPSA99420 on Windows 11 (MinGW GCC 15.2.0), on main 3faa9cb40 with feat(libkernel): carry chflags implementation #4379, feat(libkernel): implement getpriority for the guest process #4374, feat(libkernel): implement sigpending #4383, feat(libkernel): add clock_settime with FreeBSD argument checks #5183 and feat(libkernel): report vm.overcommit through sysctlbyname #5184, and without the host's HOME (Git Bash sets it; the guest environment is seeded from the host, and Kodi then puts its profile under the host home). Before, it exits as above about 3 s in. After, Python's posix import gets further and Kodi stops on ioctl FIOCLEX (fix(libkernel): handle FIOCLEX and FIONCLEX in ioctl #5186); with that too, Kodi creates its GUI and runs for the whole 90 s run.
• guest_system_configuration checks sysconf(3) == 128 with errno unchanged. All 125 libkernel tests pass on Windows; Linux was not built locally.
• python tools/check_conventions.py --base origin/main passes.

Checklist

• Based on current main; no other open PR implements the same functions
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed under Silent stubs in their library's technical debt file
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none to build; PS5MC reaches it with feat(libkernel): carry chflags implementation #4379, feat(libkernel): implement getpriority for the guest process #4374, feat(libkernel): implement sigpending #4383, feat(libkernel): add clock_settime with FreeBSD argument checks #5183 and feat(libkernel): report vm.overcommit through sysctlbyname #5184
• Unblocks: Python in PS5MC (PPSA99420)
• AI-assisted: yes

🤖 Generated with Claude Code

[p3n1cillin]

Linux run: Ubuntu in WSL2, GCC 15.2.0, Ninja Release, BUILD_TESTING=ON, full build of a local test head 838d4fd85. That head is main 3faa9cb40 with this PR, my other open libkernel PRs (#5013, #5061, #5078, #5098, #5183–#5187, #5191) and the open PRs the catalog titles need (#4377, #4379, #4374, #4383, #3798, #4467, #4863, #4105). All 123 libkernel and 69 libc tests pass, including guest_system_configuration, guest_getrlimit, guest_kernel_fcntl, guest_freebsd_clocks, guest_kernel_sys and guest_filesystem. Not built alone on Linux; no title run on Linux.

[github-actions]

Other open pull requests touch the same code. Merging one will break the other, or both implement the same thing. If this one builds on them, list them in Depends on.

Pull request	Conflicting files (lines on main)	Same exports	Same new files
#5275	docs/dev/debt/libkernel.md L17

[coltken95]

Tested on Linux x86-64 (Release build), with this PR alone (72a685b) merged into main 9d0a41d:

• With the PR: guest_system_configuration passes.
• With main's sources and the PR's test: guest_system_configuration aborts.

AI-assisted: yes (Claude Code)