d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

epoch(9): make nesting assert in epoch_wait_preempt more specific

Browse Source 
Reported by:	markj
This commit is contained in:
Matt Macy 2018-07-04 21:34:08 +00:00
parent 84a15fe70d
commit 10b8cd7f55
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=335970
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/kern/subr_epoch.c
View File

@ -421,7 +421,9 @@ epoch_wait_preempt(epoch_t epoch)
if ((epoch->e_flags & EPOCH_LOCKED) == 0)
WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL,
"epoch_wait() can be long running");
KASSERT(td->td_epochnest == 0, ("epoch_wait() in the middle of an epoch section"));
KASSERT(!in_epoch(epoch),
("epoch_wait_preempt() called in the middle "
"of an epoch section of the same epoch"));
#endif
thread_lock(td);
DROP_GIANT();