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rcu: Fix kfree_rcu() docbook errors
After commit5130b8fd06
("rcu: Introduce kfree_rcu() single-argument macro"), kernel-doc now emits two warnings: ./include/linux/rcupdate.h:884: warning: Excess function parameter 'ptr' description in 'kfree_rcu' ./include/linux/rcupdate.h:884: warning: Excess function parameter 'rhf' description in 'kfree_rcu' This commit added some macro magic in order to call two different versions of kfree_rcu(), the first having just one argument and the second having two arguments. That makes it difficult to document the kfree_rcu() arguments in the docboook header. In order to make clearer that this macro accepts optional arguments, this commit uses macro concatenation so that this macro changes from: #define kfree_rcu kvfree_rcu to: #define kfree_rcu(ptr, rhf...) kvfree_rcu(ptr, ## rhf) That not only helps kernel-doc understand the macro arguments, but also provides a better C definition that makes clearer that the first argument is mandatory and the second one is optional. Fixes:5130b8fd06
("rcu: Introduce kfree_rcu() single-argument macro") Tested-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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@ -881,7 +881,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
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* The BUILD_BUG_ON check must not involve any function calls, hence the
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* checks are done in macros here.
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*/
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#define kfree_rcu kvfree_rcu
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#define kfree_rcu(ptr, rhf...) kvfree_rcu(ptr, ## rhf)
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/**
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* kvfree_rcu() - kvfree an object after a grace period.
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