Date: Tue, 14 Jul 2009 22:50:41 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r195700 - head/sys/kern Message-ID: <200907142250.n6EMofBo073560@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: kib Date: Tue Jul 14 22:50:41 2009 New Revision: 195700 URL: http://svn.freebsd.org/changeset/base/195700 Log: When wakeup(9) is going to notify swapper, assert that wait channel is not equal to &proc0. It shall be not, since proc0 stack is not swappable, and kick_proc0() is wakeup(&proc0). Reviewed by: jhb Approved by: re (kensmith) Modified: head/sys/kern/kern_synch.c Modified: head/sys/kern/kern_synch.c ============================================================================== --- head/sys/kern/kern_synch.c Tue Jul 14 22:48:30 2009 (r195699) +++ head/sys/kern/kern_synch.c Tue Jul 14 22:50:41 2009 (r195700) @@ -347,8 +347,11 @@ wakeup(void *ident) sleepq_lock(ident); wakeup_swapper = sleepq_broadcast(ident, SLEEPQ_SLEEP, 0, 0); sleepq_release(ident); - if (wakeup_swapper) + if (wakeup_swapper) { + KASSERT(ident != &proc0, + ("wakeup and wakeup_swapper and proc0")); kick_proc0(); + } } /*
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200907142250.n6EMofBo073560>