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types: Remove call_rcu_bh() and call_rcu_sched() 

Now that call_rcu()'s callback is not invoked until after bh-disable and
preempt-disable regions of code have completed (in addition to explicitly
marked RCU read-side critical sections), call_rcu() can be used in place
of call_rcu_bh() and call_rcu_sched().  This commit therefore removes
these two API members from the callback_head structure's header comment.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
This commit is contained in:
Paul E. McKenney 2018-11-07 14:01:39 -08:00
parent e3e7405441
commit d5cccfc7b7
1 changed files with 2 additions and 2 deletions
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4
include/linux/types.h
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@ -212,8 +212,8 @@ struct ustat {
* weird ABI and we need to ask it explicitly.
*
* The alignment is required to guarantee that bit 0 of @next will be
* clear under normal conditions -- as long as we use call_rcu(),
* call_rcu_bh(), call_rcu_sched(), or call_srcu() to queue callback.
* clear under normal conditions -- as long as we use call_rcu() or
* call_srcu() to queue the callback.
*
* This guarantee is important for few reasons:
* - future call_rcu_lazy() will make use of lower bits in the pointer;