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| author | jeff <jeff@FreeBSD.org> | 2008-03-21 08:23:25 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2008-03-21 08:23:25 +0000 |
| commit | ba540b27d633327453067e692e5ccb2095d417c1 (patch) | |
| tree | 85009349e539f1265173b5d33889d0fca5031c61 /sys/kern/kern_sig.c | |
| parent | 8420f5505a178be36939d61d6e9da31e0f2eb05a (diff) | |
| download | FreeBSD-src-ba540b27d633327453067e692e5ccb2095d417c1.zip FreeBSD-src-ba540b27d633327453067e692e5ccb2095d417c1.tar.gz | |
- Add a new td flag TDF_NEEDSUSPCHK that is set whenever a thread needs
to enter thread_suspend_check().
- Set TDF_ASTPENDING along with TDF_NEEDSUSPCHK so we can move the
thread_suspend_check() to ast() rather than userret().
- Check TDF_NEEDSUSPCHK in the sleepq_catch_signals() optimization so
that we don't miss a suspend request. If this is set use the
expensive signal path.
- Set NEEDSUSPCHK when creating a new thread in thr in case the
creating thread is due to be suspended as well but has not yet.
Reviewed by: davidxu (Authored original patch)
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index eee71f1..6fc597b 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -2286,6 +2286,7 @@ sig_suspend_threads(struct thread *td, struct proc *p, int sending) FOREACH_THREAD_IN_PROC(p, td2) { thread_lock(td2); + td2->td_flags |= TDF_ASTPENDING | TDF_NEEDSUSPCHK; if ((TD_IS_SLEEPING(td2) || TD_IS_SWAPPED(td2)) && (td2->td_flags & TDF_SINTR) && !TD_IS_SUSPENDED(td2)) { |
