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.
