Re: [PATCH RFC tip/core/rcu 0/30] RCU commits queued for 2.6.36/7

From: Josh Triplett
Date: Wed Jul 14 2010 - 17:19:37 EST


On Wed, Jul 14, 2010 at 01:09:45PM -0700, Paul E. McKenney wrote:
> This patchset shows the patches queued for 2.6.36/7. These are not
> yet ready to move upstream due to dependencies on commits moving up other
> trees. The patches are as follows:
>
> 1-19. These are the remaining patches implementing Arnd's sparse-checking
> work. #1 needs to go up the networking tree, but
> will cause regressions until f5155b33277 ("rcu: add an
> rcu_dereference_index_check()") reaches mainline. #2 depends
> on #1, and many of the later patches (#3-#30) depend on #2.
> Many of #3-#19 will go up non-tip trees.
> 20. Update Documentation/RCU to remove the now-deprecated rcu_head
> initialization macros.
> 21. Fix long-standing DocBook example showing long-dead three-argument
> variant of call_rcu().
> 22. Make the CPU stall warning timeout configurable at build time
> with new RCU_CPU_STALL_TIMEOUT config parameter.
> 23. Remove the now-deprecated rcu_head initialization macros.
> This depends on a couple of patches removing their use that
> are making their way up other maintainer trees.
> 24. Document the new debug assists from Arnd, Mathieu, and myself.
> 25. Add random preemption to rcutorture testing of preemptible
> RCU, courtesy of Lai Jiangshan.
> 26. Remove TREE_RCU's ->rda[] array in favor of the new __percpu
> facility, also courtesy of Lai Jiangshan.
> 27. Fixlet to #26 for RCU tracing.
> 28. Rename __do_rcu_dereference_check() to rcu_lockdep_assert(),
> given that Tetsuo Handa has found outside-of-RCU use for this
> function.
> 29. Add a boot parameter to suppress RCU CPU stall warnings.
> 30. Update kerneldoc or rcu_read_lock(), call_rcu(), and
> synchronize_rcu().

I replied to patches 27 and 29 with suggested changes. For all the
rest:

Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>

- Josh Triplett
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