thread0: Stop calling thread0 "swapper"
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Authored by jhb on Dec 2 2025, 10:44 PM.

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Reviewers

markj
kib
olce

Commits

rGc512446400fa: thread0: Stop calling thread0 "swapper"
rG431b3b224db2: thread0: Stop calling thread0 "swapper"

Summary

Just leave it as "kernel". While here, replace "parked" with "-" (the
typical wait channel for idle threads).

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Repository

rG FreeBSD src repository

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Event Timeline

jhb created this revision.Dec 2 2025, 10:44 PM

Herald added subscribers: olce, imp. · View Herald TranscriptDec 2 2025, 10:44 PM

jhb requested review of this revision.Dec 2 2025, 10:44 PM

Harbormaster completed remote builds in B69003: Diff 167443.Dec 2 2025, 10:44 PM

jhb added a child revision: D54040: thread0: Clear td_rux stats in proc0_post.Dec 2 2025, 10:44 PM

This is fine, but there are quite a few more references to "swapper" in the src tree. mac_cred_create_swapper() in particular is a misnomer now. I should have cleaned those up when I removed stack swapping.

This revision is now accepted and ready to land.Dec 2 2025, 11:07 PM

kib accepted this revision.Dec 2 2025, 11:46 PM

kib added inline comments.

sys/kern/init_main.c
534	Might be call it kernel0

jhb added inline comments.Dec 3 2025, 3:34 PM

sys/kern/init_main.c
534	I only used the same name as that is what threads get by default (and tools like ps, etc. treat identical names as a special case). I think if we want to give it a distinct name, we should maybe use something like "boot" or "startup" that reflects its role.