Author: markj
Date: Thu May 25 01:09:45 2017
New Revision: 318845
URL: https://svnweb.freebsd.org/changeset/base/318845
Log:
MFC r318191:
Let ptracestop() suspend threads sleeping in an SBDRY section.
Modified:
stable/11/sys/kern/kern_sig.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/kern/kern_sig.c
==============================================================================
--- stable/11/sys/kern/kern_sig.c Thu May 25 01:01:35 2017
(r318844)
+++ stable/11/sys/kern/kern_sig.c Thu May 25 01:09:45 2017
(r318845)
@@ -2495,6 +2495,7 @@ sig_suspend_threads(struct thread *td, s
PROC_LOCK_ASSERT(p, MA_OWNED);
PROC_SLOCK_ASSERT(p, MA_OWNED);
+ MPASS(sending || td == curthread);
wakeup_swapper = 0;
FOREACH_THREAD_IN_PROC(p, td2) {
@@ -2511,10 +2512,9 @@ sig_suspend_threads(struct thread *td, s
*/
KASSERT(!TD_IS_SUSPENDED(td2),
("thread with deferred stops suspended"));
- if (TD_SBDRY_INTR(td2) && sending) {
+ if (TD_SBDRY_INTR(td2))
wakeup_swapper |= sleepq_abort(td2,
TD_SBDRY_ERRNO(td2));
- }
} else if (!TD_IS_SUSPENDED(td2)) {
thread_suspend_one(td2);
}
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