Messages in this thread | | | Date | Mon, 15 Dec 2008 09:39:18 +0800 | From | Li Zefan <> | Subject | Re: [PATCH] sched: fix another race when reading /proc/sched_debug |
| |
Paul Menage wrote: > I sent out some patches last week (search for hierarchy_mutex) that would > mean that you'd only need to take a subsystem-local lock to keep a cgroup > alive. People seemed to like them so I'll tweak them based on feedback and > send them on to Andrew. >
Unfortunately, AFAICS the proposed hierarchy_mutex can't solve this bug. :(
> Paul > > On Dec 14, 2008 4:48 AM, "Peter Zijlstra" <a.p.zijlstra@chello.nl> wrote: > > On Sun, 2008-12-14 at 10:54 +0800, Li Zefan wrote: > > i merged it up in > tip/master, could you pleas... > Can't we detect a dead task-group and skip those instead of adding this > global lock? > >> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> > --- > kernel/sched_fair.c > | 6 ++++++ > kerne... >
| |