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rcu: Introduce kfree_rcu() single-argument macro
There is a kvfree_rcu() single argument macro that handles pointers returned by kvmalloc(). Even though it also handles pointer returned by kmalloc(), readability suffers. This commit therefore updates the kfree_rcu() macro to explicitly pair with kmalloc(), thus improving readability. Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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parent
84109ab585
commit
5130b8fd06
1 changed files with 12 additions and 10 deletions
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@ -851,8 +851,9 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
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/**
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* kfree_rcu() - kfree an object after a grace period.
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* @ptr: pointer to kfree
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* @rhf: the name of the struct rcu_head within the type of @ptr.
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* @ptr: pointer to kfree for both single- and double-argument invocations.
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* @rhf: the name of the struct rcu_head within the type of @ptr,
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* but only for double-argument invocations.
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*
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* Many rcu callbacks functions just call kfree() on the base structure.
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* These functions are trivial, but their size adds up, and furthermore
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@ -875,13 +876,7 @@ 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(ptr, rhf) \
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do { \
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typeof (ptr) ___p = (ptr); \
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\
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if (___p) \
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__kvfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \
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} while (0)
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#define kfree_rcu kvfree_rcu
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/**
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* kvfree_rcu() - kvfree an object after a grace period.
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@ -913,7 +908,14 @@ do { \
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kvfree_rcu_arg_2, kvfree_rcu_arg_1)(__VA_ARGS__)
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#define KVFREE_GET_MACRO(_1, _2, NAME, ...) NAME
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#define kvfree_rcu_arg_2(ptr, rhf) kfree_rcu(ptr, rhf)
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#define kvfree_rcu_arg_2(ptr, rhf) \
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do { \
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typeof (ptr) ___p = (ptr); \
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\
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if (___p) \
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__kvfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \
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} while (0)
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#define kvfree_rcu_arg_1(ptr) \
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do { \
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typeof(ptr) ___p = (ptr); \
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