CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Wed Feb 28 04:13:00 UTC 2024

Modified Files:
        src/sys/kern: kern_heartbeat.c

Log Message:
heartbeat(9): No kpreempt_disable/enable in heartbeat_suspend/resume.

This causes a leak of l_nopreempt in xc_thread when a CPU is offlined
and onlined again, because the offlining heartbeat_suspend and the
onlining heartbeat_resume happen in separate xcalls.

No change to callers because they are already bound to the CPU:

1. cnpollc does kpreempt_disable/enable itself around the calls to
   heartbeat_suspend/resume anyway

2. cpu_xc_offline/online run in the xcall thread, which is always
   bound to the CPU that is being offlined or onlined


To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/sys/kern/kern_heartbeat.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.