rcu: Make task_subsys_state() RCU-lockdep checks handle boot-time use
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From: Paul Menage on 1 Mar 2010 14:50 On Sun, Feb 28, 2010 at 12:59 AM, tip-bot for Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> wrote: > Commit-ID: �1883c79a57a5fe25309007590cccb1b2782c41b2 > Gitweb: � � http://git.kernel.org/tip/1883c79a57a5fe25309007590cccb1b2782c41b2 > Author: � � Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> > AuthorDate: Sat, 27 Feb 2010 14:53:08 -0800 > Committer: �Ingo Molnar <mingo(a)elte.hu> > CommitDate: Sun, 28 Feb 2010 09:17:42 +0100 > > rcu: Make task_subsys_state() RCU-lockdep checks handle boot-time use > > It is apparently legal to invoke task_subsys_state() without RCU > protection during early boot time. �After all, there are no > concurrent tasks, so there can be no grace periods completing > concurrently. > > But this does need an Acked-by from the cgroups folks. > > Located-by: Ingo Molnar <mingo(a)elte.hu> > Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Acked-by: Paul Menage <menage(a)google.com> Thanks. Paul -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |