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PR/54718 CVS commit: src/sys/kern
The following reply was made to PR port-sparc/54718; it has been noted by GNATS.
From: "Andrew Doran" <ad%netbsd.org@localhost>
Subject: PR/54718 CVS commit: src/sys/kern
Date: Sun, 1 Dec 2019 13:20:42 +0000
Module Name: src
Committed By: ad
Date: Sun Dec 1 13:20:42 UTC 2019
src/sys/kern: kern_runq.c sched_4bsd.c sched_m2.c
PR port-sparc/54718 (sparc install hangs since recent scheduler changes)
- sched_tick: cpu_need_resched is no longer the correct thing to do here.
All we need to do is OR the request into the local ci_want_resched.
- sched_resched_cpu: we need to set RESCHED_UPREEMPT even on softint LWPs,
especially in the !__HAVE_FAST_SOFTINTS case, because the LWP with the
LP_INTR flag could be running via softint_overlay() - i.e. it has been
temporarily borrowed from a user process, and it needs to notice the
resched after it has stopped running softints.
To generate a diff of this commit:
cvs rdiff -u -r1.50 -r1.51 src/sys/kern/kern_runq.c
cvs rdiff -u -r1.38 -r1.39 src/sys/kern/sched_4bsd.c
cvs rdiff -u -r1.34 -r1.35 src/sys/kern/sched_m2.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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