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* [PATCH tip/core/rcu 0/4] rcu: suppress RCU lockdep early-boot warnings and fixes
@ 2010-03-03 15:46 Paul E. McKenney
  2010-03-03 15:46 ` [PATCH tip/core/rcu 1/4] rcu: use wrapper function instead of exporting tasklist_lock Paul E. McKenney
                   ` (3 more replies)
  0 siblings, 4 replies; 13+ messages in thread
From: Paul E. McKenney @ 2010-03-03 15:46 UTC (permalink / raw)
  To: linux-kernel
  Cc: mingo, laijs, dipankar, akpm, mathieu.desnoyers, josh, dvhltc,
	niv, tglx, peterz, rostedt, Valdis.Kletnieks, dhowells

Hello!

This patch series suppresses early-boot RCU-lockdep warnings and fixes
a couple of other RCU lockdep issues:

1.	Use a wrapper function to query lockdep about tasklist_lock
	instead of (re-)exporting tasklist_lock to modules.

2.	Suppress early-boot RCU-lockdep warnings.

3.	Revert an earlier lockdep-RCU patch that manually checked for
	early boot.

4.	Add a couple of variables to the lockdep_rcu_dereference()
	output.

Testing identified a couple of lockdep splats that I thought were due
to early boot issues, but which turned out to be not -quite- that early.
These will be dealt with by a pair of later patches.

							Thanx, Paul

 include/linux/cgroup.h   |    2 --
 include/linux/cred.h     |    2 +-
 include/linux/rcupdate.h |   35 ++++++++++++++++++++++++++---------
 include/linux/sched.h    |    4 ++++
 kernel/exit.c            |    2 +-
 kernel/fork.c            |    9 ++++++++-
 kernel/lockdep.c         |    2 +-
 kernel/pid.c             |    5 +++--
 lib/locking-selftest.c   |    6 +++++-
 9 files changed, 49 insertions(+), 18 deletions(-)

^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2010-03-04 20:36 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-03-03 15:46 [PATCH tip/core/rcu 0/4] rcu: suppress RCU lockdep early-boot warnings and fixes Paul E. McKenney
2010-03-03 15:46 ` [PATCH tip/core/rcu 1/4] rcu: use wrapper function instead of exporting tasklist_lock Paul E. McKenney
2010-03-04 16:31   ` [tip:core/urgent] rcu: Use " tip-bot for Paul E. McKenney
2010-03-03 15:46 ` [PATCH tip/core/rcu 2/4] rcu: suppress RCU lockdep warnings during early boot Paul E. McKenney
2010-03-04 11:12   ` Ingo Molnar
2010-03-04 11:44     ` Ingo Molnar
2010-03-04 20:35       ` Paul E. McKenney
2010-03-04 20:36     ` Paul E. McKenney
2010-03-04 16:33   ` [tip:core/urgent] rcu: Suppress " tip-bot for Paul E. McKenney
2010-03-03 15:46 ` [PATCH tip/core/rcu 3/4] rcu: revert 1883c79a: early boot now handled by lockdep-RCU Paul E. McKenney
2010-03-04 16:32   ` [tip:core/urgent] rcu, cgroup: Relax the check in task_subsys_state() as early boot is " tip-bot for Paul E. McKenney
2010-03-03 15:46 ` [PATCH tip/core/rcu 4/4] rcu: add control variables to lockdep_rcu_dereference() diagnostics Paul E. McKenney
2010-03-04 16:32   ` [tip:core/urgent] rcu: Add " tip-bot for Paul E. McKenney

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